Pub Date : 2025-02-01DOI: 10.1016/j.chemosphere.2024.143912
Tianru Lou , Yanan Yin , Jianlong Wang
The effect of zero-valent iron (ZVI) dosage on medium-chain fatty acids (MCFAs) production from sewage sludge fermentation was explored. ZVI within a dosage of 2–20 g/L favored MCFAs production. Adding 20 g/L ZVI (ZVI20) increased the MCFAs and long-chain alcohols (LCAs) production to 4079.0 mg/L and 93.1 mg/L, the electron transfer efficiency of MCFAs and MCFAs selectivity were also increased by over 40% and 25% than the control. This may be due to the enriched MCFAs-producing genera, like Romboutsia and Paraclostridium. 2 g/L ZVI favorably strengthened the RBO pathway and facilitated intracellular electron generation. Moreover, ZVI facilitated the extracellular electron transfer, and cytochrome C was most enriched by ZVI20. The low MCFAs production in the ZVI50 group might be due to the inhibition of acetyl-CoA and ATP synthesis. These results provided a deep insight into the effects of ZVI dosage on MCFAs production and the specific mechanisms.
{"title":"Enhancement of medium-chain fatty acids production from sewage sludge fermentation by zero-valent iron","authors":"Tianru Lou , Yanan Yin , Jianlong Wang","doi":"10.1016/j.chemosphere.2024.143912","DOIUrl":"10.1016/j.chemosphere.2024.143912","url":null,"abstract":"<div><div>The effect of zero-valent iron (ZVI) dosage on medium-chain fatty acids (MCFAs) production from sewage sludge fermentation was explored. ZVI within a dosage of 2–20 g/L favored MCFAs production. Adding 20 g/L ZVI (ZVI20) increased the MCFAs and long-chain alcohols (LCAs) production to 4079.0 mg/L and 93.1 mg/L, the electron transfer efficiency of MCFAs and MCFAs selectivity were also increased by over 40% and 25% than the control. This may be due to the enriched MCFAs-producing genera, like <em>Romboutsia</em> and <em>Paraclostridium</em>. 2 g/L ZVI favorably strengthened the RBO pathway and facilitated intracellular electron generation. Moreover, ZVI facilitated the extracellular electron transfer, and cytochrome C was most enriched by ZVI20. The low MCFAs production in the ZVI50 group might be due to the inhibition of acetyl-CoA and ATP synthesis. These results provided a deep insight into the effects of ZVI dosage on MCFAs production and the specific mechanisms.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"370 ","pages":"Article 143912"},"PeriodicalIF":8.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142796655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.chemosphere.2024.143931
Sapna Kumari Pandey, Kunal Roy
Regulatory authorities frequently need information on a chemical's capacity to produce acute systemic toxicity in humans. Due to concerns about animal welfare, human relevance, and reproducibility, numerous international initiatives have centered on finding a substitute for using animals in acute systemic lethality testing. These substitutes include the more current in-silico and in vitro techniques. Meanwhile, Advances in artificial intelligence and computational resources have led to a rise in the speed and accuracy of machine learning algorithms. Therefore, new approach methodologies (NAMs) based on in-silico modeling are considered a suitable place to start, even though many non-animal testing approaches exist for evaluating the safety of chemicals. Eventually, in this investigation, we have developed a hybrid computational model for acute inhalational toxicity data. In this case study, two major in silico techniques, QSAR (quantitative structure-activity relationship) and qRA (quantitative read-across) predictions, were utilized in a hybrid manner to extract more insightful information about the compounds based on similarity as well as the physicochemical properties. The findings of this investigation demonstrate that the integrated method surpasses the traditional QSAR model in terms of statistical quality for inhalational toxicity data, with greater predictability and transferability, due to a much smaller number of descriptors used in the hybrid modeling process. This hybrid modeling technique is a promising alternative, which can be paired with other methods in an integrated manner for a more rational categorization and evaluation of inhaled chemicals as a substitute for animal testing for regulatory purposes in the future.
{"title":"Hybrid model development through the integration of quantitative read-across (qRA) hypothesis with the QSAR framework: An alternative risk assessment of acute inhalation toxicity testing in rats","authors":"Sapna Kumari Pandey, Kunal Roy","doi":"10.1016/j.chemosphere.2024.143931","DOIUrl":"10.1016/j.chemosphere.2024.143931","url":null,"abstract":"<div><div>Regulatory authorities frequently need information on a chemical's capacity to produce acute systemic toxicity in humans. Due to concerns about animal welfare, human relevance, and reproducibility, numerous international initiatives have centered on finding a substitute for using animals in acute systemic lethality testing. These substitutes include the more current <em>in-silico</em> and in vitro techniques. Meanwhile, Advances in artificial intelligence and computational resources have led to a rise in the speed and accuracy of machine learning algorithms. Therefore, new approach methodologies (NAMs) based on <em>in-silico</em> modeling are considered a suitable place to start, even though many non-animal testing approaches exist for evaluating the safety of chemicals. Eventually, in this investigation, we have developed a hybrid computational model for acute inhalational toxicity data. In this case study, two major in silico techniques, QSAR (quantitative structure-activity relationship) and qRA (quantitative read-across) predictions, were utilized in a hybrid manner to extract more insightful information about the compounds based on similarity as well as the physicochemical properties. The findings of this investigation demonstrate that the integrated method surpasses the traditional QSAR model in terms of statistical quality for inhalational toxicity data, with greater predictability and transferability, due to a much smaller number of descriptors used in the hybrid modeling process. This hybrid modeling technique is a promising alternative, which can be paired with other methods in an integrated manner for a more rational categorization and evaluation of inhaled chemicals as a substitute for animal testing for regulatory purposes in the future.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"370 ","pages":"Article 143931"},"PeriodicalIF":8.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142822637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.chemosphere.2024.143940
Abir Das , Sayan Pal , Mirza Hasanuzzaman , Malay Kumar Adak , Sudipta Kumar Sil
Biofabricated selenium nanoparticles (Se-NPs) and sodium nitroprusside-derived nitric oxide (NO) singly or in combination was evaluated to improve tolerance to aluminum (Al) stress in rice (Oryza sativa L. cv. Swarna Sub1). The major objective was to elucidate contribution of sulfur reduction processes in oxidative stress tolerance along with cellular responses. Rice seedlings were primed against Al stress (550 μM) by the exogenous application of 100 μM NO and 20 ppm Se-NPs synthesized from a Salvinia molesta D. Mitch. extract. Green-synthesized Se-NPs (∼67 nm) had a crystalline, amorphous structure, high stability with functional groups in capping agents. The seedlings reduced bioaccumulation of Al in root tissues under SNP, Se-NPs, and in combination. Bioexclusion of Al was done in endodermal tissues by callose formation and binding in a fluorescent complex in the root tips. An upregulation of sulfur metabolism, including total sulfur, cysteine, cysteine synthase, and ATP sulfurylase activity was modulated by SNP + Se-NPs combination. Oxidative stress inducing metal stress for membrane oxidation into malondialdehyde, superoxide radical, and hydrogen peroxide, were also moderated by the SNP + Se-NPs combination. The Al-induced oxidative stress was relieved by a proportionate increase in superoxide dismutase and peroxidase activity. A higher ratio of ascorbate to dehydroascorbate and reduced to oxidized glutathione induced by the SNP + Se-NPs combination was supported antioxidation. These findings may substantiate the efficiency of green-synthesized Se-NPs together with SNP (as an NO donor) for amelioration of Al hazardous in crops like rice.
{"title":"Mitigation of aluminum toxicity in rice seedlings using biofabricated selenium nanoparticles and nitric oxide: Synergistic effects on oxidative stress tolerance and sulfur metabolism","authors":"Abir Das , Sayan Pal , Mirza Hasanuzzaman , Malay Kumar Adak , Sudipta Kumar Sil","doi":"10.1016/j.chemosphere.2024.143940","DOIUrl":"10.1016/j.chemosphere.2024.143940","url":null,"abstract":"<div><div>Biofabricated selenium nanoparticles (Se-NPs) and sodium nitroprusside-derived nitric oxide (NO) singly or in combination was evaluated to improve tolerance to aluminum (Al) stress in rice (<em>Oryza sativa</em> L. cv. Swarna Sub1). The major objective was to elucidate contribution of sulfur reduction processes in oxidative stress tolerance along with cellular responses. Rice seedlings were primed against Al stress (550 μM) by the exogenous application of 100 μM NO and 20 ppm Se-NPs synthesized from a <em>Salvinia molesta</em> D. Mitch. extract. Green-synthesized Se-NPs (∼67 nm) had a crystalline, amorphous structure, high stability with functional groups in capping agents. The seedlings reduced bioaccumulation of Al in root tissues under SNP, Se-NPs, and in combination. Bioexclusion of Al was done in endodermal tissues by callose formation and binding in a fluorescent complex in the root tips. An upregulation of sulfur metabolism, including total sulfur, cysteine, cysteine synthase, and ATP sulfurylase activity was modulated by SNP + Se-NPs combination. Oxidative stress inducing metal stress for membrane oxidation into malondialdehyde, superoxide radical, and hydrogen peroxide, were also moderated by the SNP + Se-NPs combination. The Al-induced oxidative stress was relieved by a proportionate increase in superoxide dismutase and peroxidase activity. A higher ratio of ascorbate to dehydroascorbate and reduced to oxidized glutathione induced by the SNP + Se-NPs combination was supported antioxidation. These findings may substantiate the efficiency of green-synthesized Se-NPs together with SNP (as an NO donor) for amelioration of Al hazardous in crops like rice.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"370 ","pages":"Article 143940"},"PeriodicalIF":8.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.chemosphere.2024.143952
Muhammad Kamran, Muhammad Ahmad, Sarfraz Ali Shad
Trichogramma chilonis (Ishii) (Hymenoptera: Trichogrammatidae), a widely used egg parasitoid of lepidopteran pests in various crops, has developed very high levels of resistance when treated with chlorantraniliprole under laboratory conditions. This study assessed and characterized its mode of inheritance, degree of dominance, realized heritability (h2), and cross-resistance. Toxicity bioassays were performed on T. chilonis adults using a dry film residue method. The chlorantraniliprole resistant strain (Chlr-R) of T. chilonis showed >25000-fold resistance as compared with chlorantraniliprole susceptible strain (Chlr-S). The chlorantraniliprole resistance in T. chilonis was characterized as incompletely dominant and governed by multiple autosomal genes. Additionally, the resistance of T. chilonis to chlorantraniliprole shifted from functionally dominant (at lower applied doses) to functionally recessive (at highest applied dose). Parameters regarding the h2 of chlorantraniliprole resistance in T. chilonis predicted 10-fold rise in the initial LC50 after 14.28 generations with continuous selections (at h2 = 0.24). No obvious cross-resistance to cypermethrin and chlorpyrifos and a very low cross-resistance to flonicamid were detected. These findings are helpful to improve the field-based effectiveness and integration of these wasps with chemical control.
{"title":"Genetic analysis of chlorantraniliprole resistance in the non-target bio-control agent Trichogramma chilonis","authors":"Muhammad Kamran, Muhammad Ahmad, Sarfraz Ali Shad","doi":"10.1016/j.chemosphere.2024.143952","DOIUrl":"10.1016/j.chemosphere.2024.143952","url":null,"abstract":"<div><div><em>Trichogramma chilonis</em> (Ishii) (Hymenoptera: Trichogrammatidae), a widely used egg parasitoid of lepidopteran pests in various crops, has developed very high levels of resistance when treated with chlorantraniliprole under laboratory conditions. This study assessed and characterized its mode of inheritance, degree of dominance, realized heritability (<em>h</em><sup>2</sup>), and cross-resistance. Toxicity bioassays were performed on <em>T. chilonis</em> adults using a dry film residue method. The chlorantraniliprole resistant strain (Chlr-R) of <em>T. chilonis</em> showed >25000-fold resistance as compared with chlorantraniliprole susceptible strain (Chlr-S). The chlorantraniliprole resistance in <em>T. chilonis</em> was characterized as incompletely dominant and governed by multiple autosomal genes. Additionally, the resistance of <em>T. chilonis</em> to chlorantraniliprole shifted from functionally dominant (at lower applied doses) to functionally recessive (at highest applied dose). Parameters regarding the <em>h</em><sup>2</sup> of chlorantraniliprole resistance in <em>T. chilonis</em> predicted 10-fold rise in the initial LC<sub>50</sub> after 14.28 generations with continuous selections (at <em>h</em><sup>2</sup> = 0.24). No obvious cross-resistance to cypermethrin and chlorpyrifos and a very low cross-resistance to flonicamid were detected. These findings are helpful to improve the field-based effectiveness and integration of these wasps with chemical control.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"370 ","pages":"Article 143952"},"PeriodicalIF":8.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142831110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.chemosphere.2024.143988
Rong Qian , Kunru Yu , Nanyang Chen , Ronghua Li , Kuok Ho Daniel Tang
Biochar is an environmentally friendly adsorbent material with excellent adsorption performance due to its extensive pore structure, large specific surface area, and numerous surface functional groups. It is commonly used to treat inorganic and organic pollutants. In recent years, with increasing focus on controlling soil pollution caused by heavy metals such as cadmium (Cd) and lead (Pb), the potential application of biochar has attracted much attention. This review used Citespace to quantitatively analyze the literature on the application of biochar from 2021 to 2024. It then explains the preparation techniques of unmodified and modified biochar and presents the physical and chemical properties and adsorption capacity of different biochar types for Cd and Pb. It also illustrates and compares the preparation process, modification methods, and adsorption mechanisms of biochar. Additionally, it evaluates the impacts of biochar application on heavy metal removal from rice, wheat, and corn, as well as their yields. This article contributes to the identification of the most effective materials and methods for biochar synthesis. It provides suggestions for remediation of soil heavy metal pollution and yield increase.
{"title":"Adsorptive immobilization of cadmium and lead using unmodified and modified biochar: A review of the advances, synthesis, efficiency and mechanisms","authors":"Rong Qian , Kunru Yu , Nanyang Chen , Ronghua Li , Kuok Ho Daniel Tang","doi":"10.1016/j.chemosphere.2024.143988","DOIUrl":"10.1016/j.chemosphere.2024.143988","url":null,"abstract":"<div><div>Biochar is an environmentally friendly adsorbent material with excellent adsorption performance due to its extensive pore structure, large specific surface area, and numerous surface functional groups. It is commonly used to treat inorganic and organic pollutants. In recent years, with increasing focus on controlling soil pollution caused by heavy metals such as cadmium (Cd) and lead (Pb), the potential application of biochar has attracted much attention. This review used Citespace to quantitatively analyze the literature on the application of biochar from 2021 to 2024. It then explains the preparation techniques of unmodified and modified biochar and presents the physical and chemical properties and adsorption capacity of different biochar types for Cd and Pb. It also illustrates and compares the preparation process, modification methods, and adsorption mechanisms of biochar. Additionally, it evaluates the impacts of biochar application on heavy metal removal from rice, wheat, and corn, as well as their yields. This article contributes to the identification of the most effective materials and methods for biochar synthesis. It provides suggestions for remediation of soil heavy metal pollution and yield increase.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"370 ","pages":"Article 143988"},"PeriodicalIF":8.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.chemosphere.2024.144002
Byungmi Kim , Yejin Ha , Juyeon Hwang , Hyun-Jin Kim
Background
Insufficient evidence is available to confirm the effect of exposure to airborne metals on mental disorders, particularly among asthmatics. We aimed to investigate the effect of airborne metal exposure on mental health responses in asthmatics and the general population.
Methods
Using nationally representative cross-sectional data, a total of 47,796 adults were analyzed. We assessed the associations between mental health factors, such as perceived stress, depressive symptoms, and suicidal ideation, and individuals’ annual average exposure to airborne metals, including lead, cadmium, chromium, copper, manganese, and iron, over 14 years using multiple logistic regression. The associations were compared using the propensity score matching (PSM) method. The odds ratios (OR) and 95% confidence intervals (CI) for mental health outcomes were calculated for an interquartile range (IQR) increase in the concentration of each airborne metal.
Results
Exposure to airborne metals was significantly associated with increased odds of adverse mental health in asthmatics. Significant associations between all ambient heavy metal contaminants and suicidal ideation were found in both asthmatic patients and the general population. After PSM, exposure to all ambient heavy metal contaminants showed significant associations with suicidal ideation in patients with asthma, whereas only iron exposure was significantly associated with suicidal ideation in the general population. After adjusting for perceived stress and depressive symptoms, similar patterns were also observed. Exposure to lead (OR: 1.99; 95% CI: 1.45–2.72) showed particularly a strong association with suicidal ideation in asthmatics.
Conclusions
This study suggests that exposure to airborne metals significantly increases depressive symptoms and suicidal ideation, especially in individuals with asthma. Additional clinical research is needed to better understand these associations.
{"title":"Association between chronic ambient heavy metal exposure and mental health in Korean adult patients with asthma and the general population","authors":"Byungmi Kim , Yejin Ha , Juyeon Hwang , Hyun-Jin Kim","doi":"10.1016/j.chemosphere.2024.144002","DOIUrl":"10.1016/j.chemosphere.2024.144002","url":null,"abstract":"<div><h3>Background</h3><div>Insufficient evidence is available to confirm the effect of exposure to airborne metals on mental disorders, particularly among asthmatics. We aimed to investigate the effect of airborne metal exposure on mental health responses in asthmatics and the general population.</div></div><div><h3>Methods</h3><div>Using nationally representative cross-sectional data, a total of 47,796 adults were analyzed. We assessed the associations between mental health factors, such as perceived stress, depressive symptoms, and suicidal ideation, and individuals’ annual average exposure to airborne metals, including lead, cadmium, chromium, copper, manganese, and iron, over 14 years using multiple logistic regression. The associations were compared using the propensity score matching (PSM) method. The odds ratios (OR) and 95% confidence intervals (CI) for mental health outcomes were calculated for an interquartile range (IQR) increase in the concentration of each airborne metal.</div></div><div><h3>Results</h3><div>Exposure to airborne metals was significantly associated with increased odds of adverse mental health in asthmatics. Significant associations between all ambient heavy metal contaminants and suicidal ideation were found in both asthmatic patients and the general population. After PSM, exposure to all ambient heavy metal contaminants showed significant associations with suicidal ideation in patients with asthma, whereas only iron exposure was significantly associated with suicidal ideation in the general population. After adjusting for perceived stress and depressive symptoms, similar patterns were also observed. Exposure to lead (OR: 1.99; 95% CI: 1.45–2.72) showed particularly a strong association with suicidal ideation in asthmatics.</div></div><div><h3>Conclusions</h3><div>This study suggests that exposure to airborne metals significantly increases depressive symptoms and suicidal ideation, especially in individuals with asthma. Additional clinical research is needed to better understand these associations.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"370 ","pages":"Article 144002"},"PeriodicalIF":8.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The binding interaction of food preservatives and pesticides has emerged as a matter of paramount importance as it not only presents potential health hazards but also carries substantial consequences for food processing and preservation. Herein, the mechanism of interaction between lysozyme and Amitraz was explored through spectroscopic and computational techniques. Spectral investigations indicated the spontaneous nature and stability of the lysozyme-Amitraz complex. The corresponding CD and FT-IR studies proved the structural changes of lysozyme. The presence of amitraz led to a notable decrease in both the enzymatic activity and thermal stability of lysozyme. Molecular docking demonstrated the preferred mode of interaction, and molecular dynamics simulations confirmed the stability of the resultant complex. In conclusion, the alarming findings of the lysozyme-Amitraz interaction underscore its detrimental impact on food safety and human health. Accordingly, urgent measures are imperative to address and mitigate the potential hazards posed by such interactions in food production.
{"title":"Evaluation of the effects of amitraz on the enzyme activity and stability of lysozyme: Spectroscopic and MD simulation approach","authors":"Sanaz Asgharzadeh , Behzad Shareghi , Sadegh Farhadian","doi":"10.1016/j.chemosphere.2024.144004","DOIUrl":"10.1016/j.chemosphere.2024.144004","url":null,"abstract":"<div><div>The binding interaction of food preservatives and pesticides has emerged as a matter of paramount importance as it not only presents potential health hazards but also carries substantial consequences for food processing and preservation. Herein, the mechanism of interaction between lysozyme and Amitraz was explored through spectroscopic and computational techniques. Spectral investigations indicated the spontaneous nature and stability of the lysozyme-Amitraz complex. The corresponding CD and FT-IR studies proved the structural changes of lysozyme. The presence of amitraz led to a notable decrease in both the enzymatic activity and thermal stability of lysozyme. Molecular docking demonstrated the preferred mode of interaction, and molecular dynamics simulations confirmed the stability of the resultant complex. In conclusion, the alarming findings of the lysozyme-Amitraz interaction underscore its detrimental impact on food safety and human health. Accordingly, urgent measures are imperative to address and mitigate the potential hazards posed by such interactions in food production.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"370 ","pages":"Article 144004"},"PeriodicalIF":8.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142878836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.chemosphere.2024.144014
Jueun Kim , Seokju Hong , Gijun Lee , Wooyong Um
Bentonite is regarded as an adequate buffer material in deep geological repositories and its swelling properties serve to prevent the penetration of groundwater into the repository and to minimize the release of radionuclides. However, bentonite is rarely effective in removing anionic radionuclides due to its permanent negative surface charge. The aim of this study was to enhance the anion removal ability of bentonite by incorporating layered double hydroxides (LDH) with a high anion exchange capacity. The functionalization of CuAlBi LDH on bentonite (CuAlBi LDH@Ben) revealed an effective approach for removing both cesium and iodine from aqueous solutions. The peak shift of the Si–O stretching band to higher frequencies, the vertically oriented platelet morphology, and the increase in specific surface area provide confirmation that LDH platelets grow on the surface of montmorillonite. The CuAlBi LDH@Ben demonstrates enhanced anion retention performance in bentonite without impacting its retention behavior toward cations, as evidenced by Kd values of 1943.1 mL/g for Cs+, 442.4 mL/g for I−, and 650.7 mL/g for IO3−, respectively.
{"title":"Functionalization of layered double hydroxides on bentonite for cesium and iodine retention in high-level radioactive waste disposal","authors":"Jueun Kim , Seokju Hong , Gijun Lee , Wooyong Um","doi":"10.1016/j.chemosphere.2024.144014","DOIUrl":"10.1016/j.chemosphere.2024.144014","url":null,"abstract":"<div><div>Bentonite is regarded as an adequate buffer material in deep geological repositories and its swelling properties serve to prevent the penetration of groundwater into the repository and to minimize the release of radionuclides. However, bentonite is rarely effective in removing anionic radionuclides due to its permanent negative surface charge. The aim of this study was to enhance the anion removal ability of bentonite by incorporating layered double hydroxides (LDH) with a high anion exchange capacity. The functionalization of CuAlBi LDH on bentonite (CuAlBi LDH@Ben) revealed an effective approach for removing both cesium and iodine from aqueous solutions. The peak shift of the Si–O stretching band to higher frequencies, the vertically oriented platelet morphology, and the increase in specific surface area provide confirmation that LDH platelets grow on the surface of montmorillonite. The CuAlBi LDH@Ben demonstrates enhanced anion retention performance in bentonite without impacting its retention behavior toward cations, as evidenced by K<sub>d</sub> values of 1943.1 mL/g for Cs<sup>+</sup>, 442.4 mL/g for I<sup>−</sup>, and 650.7 mL/g for IO<sub>3</sub><sup>−</sup>, respectively.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"370 ","pages":"Article 144014"},"PeriodicalIF":8.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142883684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-01DOI: 10.1016/j.chemosphere.2024.144016
Florymar Escalona-Durán , Carlos H.M. Fernandes , Aline R. Doria , Gessica O.S. Santos , Renata Colombo , Willyam R.P. Barros , Marcos R.V. Lanza
The present work investigated the application of UVC combined with electrogenerated H2O2 (UVC/e-H2O2) for BTA degradation using a Printex L6 carbon-based (PL6C) gas diffusion electrode (GDE). The studies were carried out by analyzing the influence of the current density, pH and initial BTA concentration in the contaminant degradation process. Under optimal conditions using 0.05 mol L−1 K2SO4 as supporting electrolyte, BTA removal was evaluated in different water matrices. In all cases, 100% of BTA elimination was reached in the first 15 minutes of treatment under the UVC/e-H2O2 process, while mineralization rates ranging between 59.2 and 78.0% were obtained after 90 minutes of electrolysis. The active species O2•- and e- played an important role in the BTA removal. The toxicity test conducted on the river water sample post-treatment using the Lactuca sativa L seeds showed that the BTA by-products had low toxicity. The results obtained from the LC–ESI–MS/MS analyses showed the same BTA degradation by-products when the BTA-containing water matrices were treated using the UVC/e-H2O2 and photo-electro-Fenton processes. The PL6C-GDE developed in the study exhibited high efficiency when applied for H2O2 electrogeneration and BTA degradation. Additionally, the electrode demonstrated remarkable stability and durability, enabling the generation of reproducible data for up to 81 hours of continuous operation.
{"title":"Evaluating the synergistic effect of UVC/e-H2O2 applied for benzotriazole degradation in water matrices using catalyst-free printex L6 carbon-based gas diffusion electrode","authors":"Florymar Escalona-Durán , Carlos H.M. Fernandes , Aline R. Doria , Gessica O.S. Santos , Renata Colombo , Willyam R.P. Barros , Marcos R.V. Lanza","doi":"10.1016/j.chemosphere.2024.144016","DOIUrl":"10.1016/j.chemosphere.2024.144016","url":null,"abstract":"<div><div>The present work investigated the application of UVC combined with electrogenerated H<sub>2</sub>O<sub>2</sub> (UVC/e-H<sub>2</sub>O<sub>2</sub>) for BTA degradation using a Printex L6 carbon-based (PL6C) gas diffusion electrode (GDE). The studies were carried out by analyzing the influence of the current density, pH and initial BTA concentration in the contaminant degradation process. Under optimal conditions using 0.05 mol L<sup>−1</sup> K<sub>2</sub>SO<sub>4</sub> as supporting electrolyte, BTA removal was evaluated in different water matrices. In all cases, 100% of BTA elimination was reached in the first 15 minutes of treatment under the UVC/e-H<sub>2</sub>O<sub>2</sub> process, while mineralization rates ranging between 59.2 and 78.0% were obtained after 90 minutes of electrolysis. The active species O<sub>2</sub><sup>•</sup><sup>-</sup> and <em>e</em><sup><em>-</em></sup> played an important role in the BTA removal. The toxicity test conducted on the river water sample post-treatment using the Lactuca sativa L seeds showed that the BTA by-products had low toxicity. The results obtained from the LC–ESI–MS/MS analyses showed the same BTA degradation by-products when the BTA-containing water matrices were treated using the UVC/e-H<sub>2</sub>O<sub>2</sub> and photo-electro-Fenton processes. The PL6C-GDE developed in the study exhibited high efficiency when applied for H<sub>2</sub>O<sub>2</sub> electrogeneration and BTA degradation. Additionally, the electrode demonstrated remarkable stability and durability, enabling the generation of reproducible data for up to 81 hours of continuous operation.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"370 ","pages":"Article 144016"},"PeriodicalIF":8.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142901143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In nature, species synchronize reproduction and energy metabolism with seasons to optimize survival and growth. This study investigates the effect of oral exposure to bisphenol A (BPA) on phenotypic and neuroendocrine seasonal adaptations in the Djungarian hamster, which in contrast to conventional laboratory rodents, is a well-recognized seasonal model. Adult female and male hamsters were orally exposed to BPA (5, 50, or 500 μg/kg/d) or vehicle during a 10-week transition from a long (LP) to short (SP) photoperiod (winter transition) or vice versa (summer transition). Changes in body weight, food intake, and pelage color were monitored weekly and, at the end of the exposure, expression of hypophysio-hypothalamic markers of photoperiodic (TSHβ, deiodinases), reproductive (Rfrp, kisspeptin) and metabolic (somatostatin, Pomc) integration, reproductive organ activity, and glycemia were assessed. Our results revealed sex-specific effects of BPA on acquiring SP and LP phenotypes. During LP to SP transition, females exposed to 500 μg/kg/d BPA exhibited delayed body weight loss and reduced feed efficiency associated with a lower expression of somatostatin, while males exposed to 5 μg/kg/d BPA showed an accelerated acquisition of SP-induced metabolic parameters. During SP to LP transition, females exposed to 5 μg/kg/d BPA displayed a faster LP adaptation in reproductive and metabolic parameters, along with kisspeptin downregulation occurring 5 weeks earlier and Pomc upregulation delayed for up to 10 weeks. In males, BPA exposure led to decreased expression of central photoperiodic integrators, with no effect on the acquisition of the LP phenotype. This pioneering study investigating EDCs' effects on mammalian seasonal physiology shows that BPA alters the dynamics of metabolic adaptation to both SP and LP transitions with marked sex dimorphism, causing temporal discordance in seasonal adaptation between males and females. These findings emphasize the importance of investigating EDCs’ effects on non-conventional animal models, providing insights into wildlife physiology.
在自然界中，物种的繁殖和能量代谢与季节同步，以优化生存和生长。本研究调查了口服双酚 A（BPA）对琼格纳仓鼠表型和神经内分泌季节适应性的影响，与传统的实验室啮齿动物不同，琼格纳仓鼠是一种公认的季节模型。成年雌性和雄性仓鼠在从长（LP）光周期向短（SP）光周期（冬季过渡）或反之（夏季过渡）光周期过渡的 10 周期间，口服暴露于双酚 A（5、50 或 500 μg/kg/d）或载体。每周监测体重、采食量和毛色的变化，并在暴露结束时评估光周期（TSHβ、脱碘酶）、生殖（Rfrp、kisspeptin）和代谢（体促素、Pomc）整合、生殖器官活动和血糖等下丘脑生理指标的表达。我们的研究结果表明，双酚 A 对获得 SP 和 LP 表型具有性别特异性影响。在LP向SP过渡期间，暴露于500 μg/kg/d BPA的雌性表现出体重减轻延迟和饲料效率降低，这与体节蛋白表达量降低有关；而暴露于5 μg/kg/d BPA的雄性则表现出加速获得SP诱导的代谢参数。在SP向LP过渡期间，暴露于5 μg/kg/d BPA的雌性在生殖和代谢参数方面表现出更快的LP适应性，Kisspeptin下调提前了5周，Pomc上调延迟了10周。在雄性个体中，暴露于双酚 A 会导致中枢光周期整合子的表达减少，但对 LP 表型的获得没有影响。这项开创性的研究调查了 EDC 对哺乳动物季节生理学的影响，结果表明双酚 A 改变了对 SP 和 LP 过渡的代谢适应动态，具有明显的性别二态性，导致雄性和雌性之间季节适应的时间不一致。这些发现强调了研究 EDC 对非常规动物模型的影响的重要性，为了解野生动物的生理学提供了线索。
{"title":"Bisphenol A induces sex-dependent alterations in the neuroendocrine response of Djungarian hamsters to photoperiod","authors":"Marie-Azélie Moralia, Béatrice Bothorel, Virginie Andry, Yannick Goumon, Valérie Simonneaux","doi":"10.1016/j.chemosphere.2024.143955","DOIUrl":"10.1016/j.chemosphere.2024.143955","url":null,"abstract":"<div><div>In nature, species synchronize reproduction and energy metabolism with seasons to optimize survival and growth. This study investigates the effect of oral exposure to bisphenol A (BPA) on phenotypic and neuroendocrine seasonal adaptations in the Djungarian hamster, which in contrast to conventional laboratory rodents, is a well-recognized seasonal model. Adult female and male hamsters were orally exposed to BPA (5, 50, or 500 μg/kg/d) or vehicle during a 10-week transition from a long (LP) to short (SP) photoperiod (winter transition) or vice versa (summer transition). Changes in body weight, food intake, and pelage color were monitored weekly and, at the end of the exposure, expression of hypophysio-hypothalamic markers of photoperiodic (<em>TSHβ</em>, <em>deiodinases</em>), reproductive (<em>Rfrp</em>, kisspeptin) and metabolic (<em>somatostatin</em>, <em>Pomc</em>) integration, reproductive organ activity, and glycemia were assessed. Our results revealed sex-specific effects of BPA on acquiring SP and LP phenotypes. During LP to SP transition, females exposed to 500 μg/kg/d BPA exhibited delayed body weight loss and reduced feed efficiency associated with a lower expression of <em>somatostatin</em>, while males exposed to 5 μg/kg/d BPA showed an accelerated acquisition of SP-induced metabolic parameters. During SP to LP transition, females exposed to 5 μg/kg/d BPA displayed a faster LP adaptation in reproductive and metabolic parameters, along with kisspeptin downregulation occurring 5 weeks earlier and <em>Pomc</em> upregulation delayed for up to 10 weeks. In males, BPA exposure led to decreased expression of central photoperiodic integrators, with no effect on the acquisition of the LP phenotype. This pioneering study investigating EDCs' effects on mammalian seasonal physiology shows that BPA alters the dynamics of metabolic adaptation to both SP and LP transitions with marked sex dimorphism, causing temporal discordance in seasonal adaptation between males and females. These findings emphasize the importance of investigating EDCs’ effects on non-conventional animal models, providing insights into wildlife physiology.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"370 ","pages":"Article 143955"},"PeriodicalIF":8.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号