Emerging Contaminants最新文献

{"title":"Understanding the impact of summer festival on the dynamic of micropollutant delivery to coastal wastewater treatment plant","authors":"Agne Jucyte-Cicine,&nbsp;Elise Lorre,&nbsp;Jolita Petkuviene,&nbsp;Zita R. Gasiunaite,&nbsp;Ema Durcova,&nbsp;Irma Vybernaite-Lubiene,&nbsp;Mindaugas Zilius","doi":"10.1016/j.emcon.2024.100465","DOIUrl":"10.1016/j.emcon.2024.100465","url":null,"abstract":"<div><div>Coastal cities often experience a surge in population during summer events, leading to heightened pollution entering wastewater treatment plants (WWTPs). However, the impact of these events on wastewater treatment effectiveness and the levels of hazardous substances passed into coastal ecosystems remain poorly understood. This study investigated wastewater quality and specific micropollutants (estrogens, pharmaceuticals, phthalates (PAEs), polycyclic aromatic hydrocarbons) both before and after treatment at WWTP during the summer festival at the south-eastern Baltic coastal city. The results revealed that influent flow, nutrient and pollutant loads, except for pharmaceuticals, increased during the festival. Notably, the load of specific organic pollutants (dissolved organic carbon, estrogen, and PAEs) increased by ∼50 %, which is more than three times the increase in influent flow. Despite this, the treatment process achieved high retention rates between 87 % and 100 %. Nevertheless, the overall effectiveness of the treatment process, the estrogen level in discharged effluents into the sea exceeded the environmental quality standard limits 7–12 fold. Pharmaceuticals and PAEs contributed most to the micropollutant load (25 g day⁻¹ and 34 g day⁻¹, respectively) discharged into the Baltic Sea during the festival. These findings provide novel insights into how temporal gatherings can increase pollution levels in the coastal areas of the Baltic region and highlight the potential for this pollution to be inadequately retained in treatment facilities, posing risks to the marine environment.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 2","pages":"Article 100465"},"PeriodicalIF":5.3,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135270","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}

{"title":"Research hotspots and trend analysis of per- and polyfluoroalkyl substances in the environmental field based on bibliometric analysis","authors":"Fang Yang ,&nbsp;Zhonghong Li","doi":"10.1016/j.emcon.2024.100464","DOIUrl":"10.1016/j.emcon.2024.100464","url":null,"abstract":"<div><div>Per- and polyfluoroalkyl substances (PFASs) have garnered significant attention as emerging contaminants (ECs) due to their concerning implications for ecological systems and human well-being, as well as their exhibited sustained environmental persistence, long-range migration capabilities, and bioaccumulation characteristics. To comprehensively and systematically understand the research hotspot and cutting-edge trends related to PFASs in the environmental field, a quantitative investigation was conducted based on 7735 PFAS-related articles extracted from the Web of Science Core Collection (WOSCC) from 2000 to 2023. The assessment involved trend of publication, prominent research contributors (countries, authors, and institutions) and influential journals. The results indicated a marked increase in the number of publications focused on environmentally-oriented PFASs since 2014, with these publications constituting approximately 83.89 % of the total body of literature on this topic. China and the USA emerged as the foremost contributors in this field. The preeminent journals included <em>Environmental Science &amp; Technology</em>, <em>Chemosphere</em>, and <em>Science of the Total Environment</em>. Keyword frequency, co-occurrence network, and burst analysis delineated PFASs' research in the environmental field primarily focused on environmental monitoring, toxic effects, and the ultimate destinations and degradation pathways of the PFASs. It is anticipated that future research will focus on investigating the toxic mechanisms of PFASs' impacts on human health and on developing techniques to remove PFASs from drinking water. This study provided a comprehensive overview of the extant literature, granting researchers an enriched understanding of PFASs’ research progress and offering valuable insights regarding potential avenues for further investigation.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 2","pages":"Article 100464"},"PeriodicalIF":5.3,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135271","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}

{"title":"In silico sequence and structure prediction analysis of biomarker genes in Aeromonas sp. of Andaman and Nicobar Islands","authors":"Balakrishnan Meena ,&nbsp;Lawrance Anburajan ,&nbsp;Dilip Kumar Jha ,&nbsp;Gopal Dharani","doi":"10.1016/j.emcon.2024.100463","DOIUrl":"10.1016/j.emcon.2024.100463","url":null,"abstract":"<div><div>The genus <em>Aeromonas</em> is considered as indigenous prokaryote to aquatic environments. These genus members are capable of colonizing in water bodies such as potable water, sewage and sea water. <em>Aeromonas</em> sp. is the most significant opportunistic pathogen in humans with the potential to cause different kinds of infections in blood, tissues, intestine, and dermis. The leading pathogenic species includes <em>Aeromonas hydrophila</em>, <em>A. caviae</em> and <em>A. veronii</em>. The ubiquitous nature in the environment associated with the virulence of these bacteria has been reported. Evidence for the waterborne transmission to humans by <em>Aeromonas</em> sp. is also documented. The <em>Aeromonas</em> found in wastewater and its impact on marine environment is hardly discussed and its bibliography is lacking. The aim of this research was to identify the major biomarker genes in <em>Aeromonas</em> sp., and it's <em>in silico</em> sequence analysis.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 2","pages":"Article 100463"},"PeriodicalIF":5.3,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135287","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}

{"title":"Polycyclic aromatic hydrocarbons in Ethiopian soils: Distribution, sources, and implication from energy consumption structures","authors":"Xinyue Shan ,&nbsp;Wang Yuan ,&nbsp;Shuai Song ,&nbsp;Qiang Wu ,&nbsp;Fadong Li ,&nbsp;Gang Chen ,&nbsp;Shengjie Yang ,&nbsp;Chao Su ,&nbsp;Hubert Hirwa","doi":"10.1016/j.emcon.2024.100461","DOIUrl":"10.1016/j.emcon.2024.100461","url":null,"abstract":"<div><div>Polycyclic aromatic hydrocarbons (PAHs), a ubiquitous substance in the environment, are closely associated with human energy consumption, which can be released to the environment from incomplete biomass combustion or emitted from petroleum. There is currently a knowledge gap on the relationships between energy consumption structures (ECSs) and PAH contamination, especially in African countries. This study investigated the distribution, sources, and risks of 16 prioritized PAH compounds (Σ₁₆PAHs) in Ethiopian soils, and explored the impact of ECSs on PAH contamination. The concentrations of Σ₁₆PAHs ranged from 12.51 to 435.67 ng/g, descending across an urban-rural gradient. Based on diagnostic ratios and positive matrix factorization (PMF) model, biomass combustion was the most important source. By comparing the ECSs and PAH concentrations in African countries, it was found that differences in ECSs shaped the diverse patterns of sources and concentrations of PAHs in Africa. The results of incremental lifetime cancer risk assessment suggested PAHs posed a low risk to children, adolescents, and adults. The Ethiopian government has been making continuous efforts to develop cleaner energy and optimize ECSs to decrease soil PAH concentrations and reduce potential risks. This study will provide support for Ethiopia to improve energy structure management.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 2","pages":"Article 100461"},"PeriodicalIF":5.3,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135276","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}

{"title":"Technological advances in per- and polyfluoroalkyl substances (PFAS) removal from landfill leachate: Source identification and treatment options","authors":"Deval Singh ,&nbsp;Anil Kumar Dikshit ,&nbsp;Mohan B. Dangi","doi":"10.1016/j.emcon.2024.100458","DOIUrl":"10.1016/j.emcon.2024.100458","url":null,"abstract":"<div><div>Per- and polyfluoroalkyl substances (PFAS) are a group of persistent organic compounds that present significant risks to both environmental systems and human health. The increasing concentration of PFAS in landfill leachate has been an emerging concern for waste management. This article presents a critical review of the current state-art of the technologies and processes for PFAS removal from landfill leachate. The article primarily addresses two aspects: (a) identifying the primary sources contributing to PFAS leaching, which includes examining various waste streams such as municipal solid waste (food packaging products, household consumer goods, cosmetics, electronic components), construction and demolition debris, and industrial waste (bio-solids, incineration ash, and manufacturing waste); (b) evaluating different technological options for PFAS removal from leachate, such as adsorption techniques, membrane filtration, electrochemical oxidation, photocatalytic oxidation, and biological treatment. The findings showed that the PFAS concentrations across different MSW components varied significantly, ranging from as low as 0.1 ng/L to as high as 150,000 ng/L, depending on the PFAS type and source. Additionally, the article explores the factors influencing the performance of these treatment technologies based on the experimental results, development stage, reaction time, and removal efficiency. Adsorption (granular and magnetic activated carbon) and membrane filtration processes have demonstrated higher PFAS removal efficiency ranging from 70 % to 95 %. This study emphasized the need for effective PFAS treatment strategies while addressing ongoing challenges and future research directions in mitigating their environmental impact.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 2","pages":"Article 100458"},"PeriodicalIF":5.3,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135273","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}

{"title":"Effects of exposure to micro/nanoplastics of polystyrene on neuronal oxidative stress, neuroinflammation, and anxiety-like behavior in mice: A Systematic Review","authors":"Lafram Asmaa ,&nbsp;Krami Al Mehdi ,&nbsp;Akarid Khadija ,&nbsp;Laadraoui Jawad ,&nbsp;Roky Rachida","doi":"10.1016/j.emcon.2024.100442","DOIUrl":"10.1016/j.emcon.2024.100442","url":null,"abstract":"<div><div>Polystyrene is a polymer widely used across various industrial and commercial sectors. Upon degradation, it fragments into microplastics (MP) and nanoplastics (NP), whose accumulation in the environment raises significant ecological and health concerns. These particles can disrupt digestive, reproductive, and other functions in exposed organisms. In this systematic review, the effects of mice exposure to PS-NP or PS-MP (PS-MP/NP) were systematically examined, focusing on neuronal oxidative stress, neuroinflammation, and anxiety-like behavior. Three databases (PubMed, Web of Science, and Scopus) were searched without any time filters until July 20, 2024. The study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Two independent reviewers assessed the quality of studies using the Systematic Review Centre for Laboratory Animal Experimentation tool (SYRCLE). A total of 24 original articles were included of 332 citations. Articles were published between 2021 and 2024. Out of the studies reviewed, 12 used PS-NP, 10 used PS-MP, and two used both PS-NP and PS-MP separately. The particle sizes ranged from 0.023 to 50 μm, with the majority exhibiting a spherical shape. Seven studies reported results that the exposure to PS-MP/NP elevated reactive oxygen species (ROS) levels, and/or increased lipid peroxidation-Malondialdehyde (LPO-MDA), and/or decreased antioxidants, especially superoxide dismutase (SOD), catalase (CAT), and glutathione (GSH). Eight studies demonstrated an increase in neuroinflammation markers, including TNF-α, IL-1β, IL-6, GFAP, and Iba1. Regarding anxiety-like behavior, 10 studies confirmed its induction. Furthermore, maternal exposure induced neurotoxic responses in offspring. Overall, exposure to PS-MP/NP induced oxidative stress, neuroinflammation, and anxiety-like behavior in mice. These results highlighted complex interactions between PS-MP/NP and the nervous system, emphasizing the need for a more thorough exploration of involved mechanisms.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100442"},"PeriodicalIF":5.3,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744616","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}

{"title":"Environmental occurrence of antibiotic resistance, control measures and challenges in finding therapeutic management","authors":"Rajendra Singh,&nbsp;Keugtae Kim","doi":"10.1016/j.emcon.2024.100440","DOIUrl":"10.1016/j.emcon.2024.100440","url":null,"abstract":"<div><div>Antimicrobial resistance represents a growing threat to public health, with the World Health Organization placing it among the top ten global health threats. Inappropriate use of antibiotics in healthcare and agriculture contributes to their dispersal into the environment, thereby accelerating bacterial resistance through the transfer of genetic elements and antibiotic resistance genes. The widespread prevalence of antibiotic-resistance genes and bacteria has been confirmed in both soil and water across various climates. Additionally, the detection of these resistant genes and bacteria in polar regions is particularly alarming due to their potential to spread and persist in pristine environments. The impact of antibiotic resistance is considerable, and addressing the associated challenges necessitates a collaborative effort involving healthcare professionals, government entities, scientists, and the general public. Most of the recent scholarly reviews regarding antibiotic resistance predominantly concentrate on either the overarching concept of antimicrobial resistance or they delve into particular sources, pathways, or environmental ramifications. In contrast, this extensive state-of-the-art review aspires to furnish an updated synthesis of the distribution of antibiotic resistance, its repercussions on human health and economy, as well as innovative therapeutic strategies that exhibit potential in combating antibiotic-resistant bacteria. Furthermore, it scrutinizes the challenges that impede the progression of novel therapeutic modalities and the implementation of effective control strategies. The investigation provides a comprehensive overview of the classifications of antibiotic resistance genes, systematically organized by antibiotic categories. Additionally, it underscores global management strategies, particularly through stewardship programs, promising combination therapies aimed at augmenting drug efficacy, and alternative methodologies to antibiotics for the treatment of bacterial infections.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100440"},"PeriodicalIF":5.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697347","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}

{"title":"Northern fur seal whisker bioaccumulation and partitioning of polybrominated diphenyl ethers and organochlorines","authors":"Courtney M. White ,&nbsp;Dimitrios G. Giarikos ,&nbsp;Amy C. Hirons","doi":"10.1016/j.emcon.2024.100439","DOIUrl":"10.1016/j.emcon.2024.100439","url":null,"abstract":"<div><div>The eastern Pacific stock of northern fur seals (<em>Callorhinus ursinus</em>) on the Pribilof Islands, Alaska represents over 50 % of the global breeding population, but it has experienced population declines of unknown cause(s) since 1980. One contributing factor to the decline may be exposure to anthropogenic contaminants such as persistent organic pollutants (POPs) which are biologically accumulative in nature, toxic to organisms, and environmentally persistent. This study conducted a decadal comparison of 21 organochlorine (OC) and 39 polybrominated diphenyl ether (PBDE) analyte concentrations utilizing archived vibrissae (whiskers) from individual fur seals sampled in 1993 (n = 30) and 2013 (n = 41) during subsistence harvests on the Pribilof Islands. The recently phased out PBDEs had values five times greater than the legacy status OCs, reflecting both the global shift away from chlorinated chemicals over the past 50 years and the widespread use of brominated flame retardants within the past two decades. No significant mean concentration differences were detected between 1993 and 2013 for total organochlorines (ΣOCs) (266 and 294 ng/g, respectively), or total polybrominated diphenyl ethers (ΣPBDEs) (1377 and 1521 ng/g, respectively), indicating the enduring environmental presence of these pollutants. Recently phased out PBDEs were detected at five times greater concentrations than phased out OCs. The presence of all analytes in vibrissae indicate that there is an adaptive advantage to partitioning contaminants into this inert tissue, suggesting keratinous tissue is a reliable matrix for assessing long-term for POP exposure and introducing the potential for less invasive sampling for future monitoring efforts.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100439"},"PeriodicalIF":5.3,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697450","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}

{"title":"Associations between per- and polyfluoroalkyl substances and menstrual cycle regularity in reproductive-aged female: A cross-sectional study","authors":"Aiqin Qiu ,&nbsp;Kai Luo ,&nbsp;Huan Liu ,&nbsp;Jialing Huang ,&nbsp;Xiaotu Liu ,&nbsp;Jun Zhang ,&nbsp;Da Chen ,&nbsp;Weiwei Cheng ,&nbsp;Wei Huang","doi":"10.1016/j.emcon.2024.100438","DOIUrl":"10.1016/j.emcon.2024.100438","url":null,"abstract":"<div><div>Menstrual cycle characteristics constitute one of the significant female fertility indicators. Previous epidemiological studies have shown that exposure to environmental chemicals could affect menstrual cycle characteristics, but the knowledge remains limited overall. Per- and polyfluoroalkyl substances (PFAS) have been identified as potential reproductive toxicants, while previous studies mainly focused on several legacy PFAS chemicals but generally failed to explore the outcomes from exposure to a complex mixture of both legacy and emerging PFAS. Besides, the modification effect of physical activity is rarely considered. In the present study, we explored the associations of exposure to a suite of legacy and emerging PFAS and menstrual cycle regularity as well as the potential modification by physical activity based on a pre-conception cohort in Shanghai (China) with the participation of 1001 reproductive-aged women. A total of 20 PFAS chemicals with detection frequency &gt;80 %, which were derived from the PFAS exposure profile of the same population in our previous study, were included in the confounder-adjusted logistic regression and Bayesian kernel machine regression (BKMR) analysis. In individual PFAS analysis, after adjustment of the covariates, ∑2m-PFOS (the sum of all perfluoro-dimethylhexane sulfonates) was significantly associated with menstrual cycle irregularity with an odds ratio (OR) of 1.35 (95 % confidence interval, CI: 1.09, 1.67) as well as long cycles (OR = 1.37; 95 % CI: 1.08, 1.70). In addition, a significant positive association was also found between perfluoro-n-nonanoic acid (PFNA) and long cycles (OR = 1.40; 95 % CI: 1.06, 1.86). No significant associations were found between the PFAS mixture and the menstrual cycle characteristics as revealed by BKMR analysis, while the significant association between ∑2m-PFOS and menstrual cycle irregularity was also observed in the mixture exposure model. Subgroup analysis stratified by physical activity level showed that the associations between ∑2m-PFOS and menstrual cycle irregularity as well as long cycles were more pronounced in the inactive physical activity subgroup. This study suggested that branched PFOS (i.e., ∑2m-PFOS) might act as the predominant risk factor for menstrual cycle irregularity, and physical activity could influence the risks.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100438"},"PeriodicalIF":5.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697449","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}

{"title":"Pesticide residues in tropical agricultural soils: Distribution, seasonality, and earthworm ecological risk","authors":"E. Lucero Sánchez-del Cid ,&nbsp;Jaime Rendón-von Osten ,&nbsp;Ma del Carmen Ángeles González-Chávez ,&nbsp;Arturo Torres-Dosal ,&nbsp;Esperanza Huerta-Lwanga","doi":"10.1016/j.emcon.2024.100436","DOIUrl":"10.1016/j.emcon.2024.100436","url":null,"abstract":"<div><div>Soil contamination by pesticide residues is associated with agricultural intensification in tropical regions and endangers human health and the environment. A mixture of pesticide residues and their degradation products persist in agricultural soils and represent a risk to soil organisms. In this study, we aimed to investigate the concentration and distribution of organochlorine (OC) and organophosphate (OP) pesticide residues in agricultural soils where the industrial cultivation of maize and soybeans is intensively carried out, at three depths (0–5, 5–15, and 15–30 cm) and during two seasons (rainy and dry). Likewise, we performed the ecological risk assessment of those found pesticide residues on two earthworm species, <em>Eisena fetida</em>, and <em>Aporrectoda calagionsa</em>. We calculated the Toxicity-Exposure Ratio (TER) using Predicted no Effect Concentrations (PNEC) and measured concentrations in soils, for identifying the risk of pesticide residues separately. The Risk Quotient (RQ) method was used to evaluate the ecological risk of pesticide residue mixtures in soils from each cropping system. Endrin ketone and dieldrin were the pesticide residues with the highest frequency of detection. The highest concentration in the study was found in a soil sample from maize crops in the dry season at 15–30 cm depth (2917 ng/g). The pesticide mixture from soil samples belonging to maize (0–5 cm) and soybean (5–15 cm) crops in dry season posed the highest ecological risk for <em>A. caliginosa</em> with 100 %, and a maximum RQ of 82.2. Endrin ketone is the OC that contributed most to the overall toxicity of the pesticide mixture in soil samples from maize crop and dieldrin in soil samples from soybean crop. Among OP, disulfoton contributed most to RQsite in soybean crop and methyl parathion in maize crop. Results pointed out the need to apply alternatives to remediate obsolete pesticide residues and restrict the use of methyl parathion and disulfoton in maize and soybean crops, to reduce the ecological risk that represent for earthworms.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 1","pages":"Article 100436"},"PeriodicalIF":5.3,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697448","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}