Pub Date : 2022-01-01DOI: 10.31838/ecb/2022.11.04.012
{"title":"SPERM PARAMETERS OF THE INFERTILE PATIENTS IN RELATION TO SOCIO DEMOGRAPHIC FACTORS","authors":"","doi":"10.31838/ecb/2022.11.04.012","DOIUrl":"https://doi.org/10.31838/ecb/2022.11.04.012","url":null,"abstract":"","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"2009 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41262497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.31838/ecb/2022.11.03.004
{"title":"INFLUENCE OF SAMPLE MASS ON ACCURACY OF WOOL FIBER TONE MEASUREMENT ON AN ACOUSTIC DEVICE","authors":"","doi":"10.31838/ecb/2022.11.03.004","DOIUrl":"https://doi.org/10.31838/ecb/2022.11.03.004","url":null,"abstract":"","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49438164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.31838/ecb/2022.11.04.016
{"title":"THE EFFECT OF GOLD NANOPARTICLES ON SOME REPRODUCTIVE HORMONES IN MALE IN MALE ALBINO RATS RATTUS NORVEGICUS","authors":"","doi":"10.31838/ecb/2022.11.04.016","DOIUrl":"https://doi.org/10.31838/ecb/2022.11.04.016","url":null,"abstract":"","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44433763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-11DOI: 10.17628/ECB.2021.10.237-241
P. Jay, Jinal N. Tandel, Usmagani Chhalotiya, Kirtan Patel
A strategic specific and sensitive quantitative analysis of Minoxidil and Finasteride has been developed by using HPLC with reliable, precise, and accurate result in bulk and marketed formulation. In this method Phenomenex C 18 (250 mm × 4.6 mm, 5 μm) column was used as stationary phase and a composition of Methanol: Water (85:15 v/v) was used as mobile phase. An isocratic elution programming has been done at a flow rate of 1 mL min -1 . The eluted analytes show appreciable absorbance at 223 nm. The proposed RP-LC method was validated according to ICH guidelines. The retention time of Minoxidil and Finasteride was found to be 3.15 min and 4.36 min respectively. The method was found to be linear over a range of 6 – 54 µg mL -1 for Minoxidil and 0.2-1.8 µg mL -1 for Finasteride. The percentage recovery was found to be 99.88-100.85 % for Minoxidil and 99.99-100.33 % for Finasteride. The proposed reverse phase LC method has potential qualitative as well as quantitative applications for simultaneous estimation of Minoxidil and Finasteride in bulk and pharmaceutical dosage form.
采用高效液相色谱法对米诺地尔和非那雄胺进行定量分析，结果可靠、精确、准确。该方法以Phenomenex C 18 (250 mm × 4.6 mm, 5 μm)色谱柱为固定相，甲醇:水(85:15 v/v)为流动相。以1 mL / min -1的流速进行等压洗脱程序。洗脱物在223 nm处有明显的吸光度。根据ICH指南对RP-LC方法进行验证。米诺地尔和非那雄胺的保留时间分别为3.15 min和4.36 min。该方法在米诺地尔6 ~ 54µg mL -1和非那雄胺0.2 ~ 1.8µg mL -1范围内呈线性。米诺地尔的回收率为99.88 ~ 100.85%，非那雄胺的回收率为99.99 ~ 100.33%。所建立的反相液相色谱法具有定性和定量同时测定米诺地尔和非那雄胺原料药和制剂剂型的潜力。
{"title":"SIMULTANEOUS QUANTIFICATION OF MINOXIDIL AND FINASTERIDE IN BULK AND PHARMACEUTICAL DOSAGE FORM BY RP-HPLC METHOD","authors":"P. Jay, Jinal N. Tandel, Usmagani Chhalotiya, Kirtan Patel","doi":"10.17628/ECB.2021.10.237-241","DOIUrl":"https://doi.org/10.17628/ECB.2021.10.237-241","url":null,"abstract":"A strategic specific and sensitive quantitative analysis of Minoxidil and Finasteride has been developed by using HPLC with reliable, precise, and accurate result in bulk and marketed formulation. In this method Phenomenex C 18 (250 mm × 4.6 mm, 5 μm) column was used as stationary phase and a composition of Methanol: Water (85:15 v/v) was used as mobile phase. An isocratic elution programming has been done at a flow rate of 1 mL min -1 . The eluted analytes show appreciable absorbance at 223 nm. The proposed RP-LC method was validated according to ICH guidelines. The retention time of Minoxidil and Finasteride was found to be 3.15 min and 4.36 min respectively. The method was found to be linear over a range of 6 – 54 µg mL -1 for Minoxidil and 0.2-1.8 µg mL -1 for Finasteride. The percentage recovery was found to be 99.88-100.85 % for Minoxidil and 99.99-100.33 % for Finasteride. The proposed reverse phase LC method has potential qualitative as well as quantitative applications for simultaneous estimation of Minoxidil and Finasteride in bulk and pharmaceutical dosage form.","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"10 1","pages":"237-241"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44167387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-02DOI: 10.17628/ECB.2021.10.230-236
T. Chaban, M. Arshad, L. Kostyshyn, I. Drapak, V. Matiychuk
We reported an effective synthesis, molecular docking and antimicrobial properties of novel 2-(1-allyl-1 H -tetrazol-5-ylsulfanyl)-N-arylacetamides. The molecular docking studies were performed for all the synthesized compounds against lanosterol 14-a-demethylase (PDB: 1EA1), using AutoDock-tools-1.5.6 and recorded the extent of H-bonding and the binding affinities. The preselected compounds via molecular docking were further tested for in vitro antimicrobial activity against five bacterial strains ( Escherichia coli, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, Staphylococcus aureus ) and two fungal strains ( Candida albicans and Cryptococcus neoformans ). It was observed that the compounds of this series possessed moderate antibacterial potential and high antifungal potential. Therefore studying these compounds will be a valuable starting point for further drug development and drug optimization
我们报道了新型2-(1-烯丙基-1 H -四唑-5-基磺酰)- n -芳基乙酰酰胺的有效合成、分子对接和抗菌性能。使用AutoDock-tools-1.5.6软件对合成的所有化合物与羊毛甾醇14-a-去甲基化酶(PDB: 1EA1)进行分子对接研究，记录h键的大小和结合亲和力。通过分子对接的方法对5株细菌(大肠埃希菌、肺炎克雷伯菌、鲍曼不动杆菌、铜绿假单胞菌、金黄色葡萄球菌)和2株真菌(白色念珠菌和新型隐球菌)进行体外抗菌活性测试。结果表明，该系列化合物具有中等抑菌潜力和较高的抑菌潜力。因此，研究这些化合物将是进一步药物开发和药物优化的一个有价值的起点
{"title":"SYNTHESIS, MOLECULAR DOCKING AND ANTIMICROBIAL ACTIVITIES 2-(1-ALLYL-1H-TETRAZOL-5-YLSULFANYL)-N-(ARYL)ACETAMIDES","authors":"T. Chaban, M. Arshad, L. Kostyshyn, I. Drapak, V. Matiychuk","doi":"10.17628/ECB.2021.10.230-236","DOIUrl":"https://doi.org/10.17628/ECB.2021.10.230-236","url":null,"abstract":"We reported an effective synthesis, molecular docking and antimicrobial properties of novel 2-(1-allyl-1 H -tetrazol-5-ylsulfanyl)-N-arylacetamides. The molecular docking studies were performed for all the synthesized compounds against lanosterol 14-a-demethylase (PDB: 1EA1), using AutoDock-tools-1.5.6 and recorded the extent of H-bonding and the binding affinities. The preselected compounds via molecular docking were further tested for in vitro antimicrobial activity against five bacterial strains ( Escherichia coli, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, Staphylococcus aureus ) and two fungal strains ( Candida albicans and Cryptococcus neoformans ). It was observed that the compounds of this series possessed moderate antibacterial potential and high antifungal potential. Therefore studying these compounds will be a valuable starting point for further drug development and drug optimization","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"10 1","pages":"230-236"},"PeriodicalIF":0.0,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43310331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-31DOI: 10.17628/ECB.2021.10.218-224
Oslinda Fernandes, Soniya Padhe, B. Biradar, A. Menezes
A series of 3-substituted-4-hydroxy-2-oxo-1-phenyl/methylquinolin-2-(1 H )-one derivatives were synthesized by condensation of two moles of 3-acetyl-4-hydroxy-1-phenyl/methyl quinolin-2(1 H )-one with ketone by Claisen-Schmidt reaction resulted in 3-substituted-4-hydroxy-2-oxo-1-phenyl/methylquinolin-2-(1 H )-one derivatives { (III a/b 1-5) }. All the synthesized compounds were characterized by IR and NMR data and analgesic activity was ascertained by Eddy’s hot plate method. The newly synthesized compounds showed satisfactory efficacy when compared to the reference standard drug Ibuprofen. Compounds ( III b-1 , III b-2 , III b-3 ) showed maximal analgesic effect after 1 h and waned off after 4 h. Using Molegro Virtual Docker (MVD-2013, 6.0) software , docking studies of the title compounds { IIIa/b-(1-5) } were carried out. The synthesized compounds exhibited well-conserved hydrogen bonds with one or more amino acid residues in the active pocket of the Human GRIK1 domain (PDB ID: 4MF3). The interpretation of docking studies revealed that the MolDock Score of compound (III b-1) was (- 137.967 ), which is comparable to that of the standard ligand ( -138.637 ) and standard drug Ibuprofen ( -139.385 ) and (III b-1) showed promising analgesic activity.
{"title":"SYNTHESIS AND CHARACTERIZATION OF NOVEL 3-SUBSTITUTED-4-HYDROXY-2-OXO-1-PHENYL/METHYL-QUINOLIN-2-(1H)-ONE DERIVATIVES AS ANALGESIC AGENTS","authors":"Oslinda Fernandes, Soniya Padhe, B. Biradar, A. Menezes","doi":"10.17628/ECB.2021.10.218-224","DOIUrl":"https://doi.org/10.17628/ECB.2021.10.218-224","url":null,"abstract":"A series of 3-substituted-4-hydroxy-2-oxo-1-phenyl/methylquinolin-2-(1 H )-one derivatives were synthesized by condensation of two moles of 3-acetyl-4-hydroxy-1-phenyl/methyl quinolin-2(1 H )-one with ketone by Claisen-Schmidt reaction resulted in 3-substituted-4-hydroxy-2-oxo-1-phenyl/methylquinolin-2-(1 H )-one derivatives { (III a/b 1-5) }. All the synthesized compounds were characterized by IR and NMR data and analgesic activity was ascertained by Eddy’s hot plate method. The newly synthesized compounds showed satisfactory efficacy when compared to the reference standard drug Ibuprofen. Compounds ( III b-1 , III b-2 , III b-3 ) showed maximal analgesic effect after 1 h and waned off after 4 h. Using Molegro Virtual Docker (MVD-2013, 6.0) software , docking studies of the title compounds { IIIa/b-(1-5) } were carried out. The synthesized compounds exhibited well-conserved hydrogen bonds with one or more amino acid residues in the active pocket of the Human GRIK1 domain (PDB ID: 4MF3). The interpretation of docking studies revealed that the MolDock Score of compound (III b-1) was (- 137.967 ), which is comparable to that of the standard ligand ( -138.637 ) and standard drug Ibuprofen ( -139.385 ) and (III b-1) showed promising analgesic activity.","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"10 1","pages":"218-224"},"PeriodicalIF":0.0,"publicationDate":"2021-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48439848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-31DOI: 10.17628/ECB.2021.10.225-229
S. A. Abdel-Raheem, A. El-Dean, R. Zaki, R. Hassanien, M. El-Sayed, M. Sayed, Aly A. Abd-Ella
The toxicity of four pyridine-containing neonicotinoid analogues as potential insecticides against cowpea aphid, Aphis craccivora Koch, has been evaluated. The four pyridine compounds are 2-((2-oxopropyl)thio)-4,6-distyrylnicotinonitrile ( 2 ), 2-acetyl-3-amino-4,6-distyrylthieno[2,3- b ]pyridine ( 3 ), ethyl 2-((3-cyano-4,6-distyrylpyridin-2-yl)thio)acetate ( 4 ), and ethyl 3-amino-4,6-distyrylthieno[2,3- b ]pyridine-2-carboxylate ( 5 ). By screening the insecticidal activity for compounds ( 2-5 ) against the cowpea aphid nymphs after 24 h of treatment, the LC 50 values were 0.133, 0.687, 0.171, and 0.771 ppm, respectively, and after 48 h of treatment, the LC 50 values were 0.016, 0.111, 0.029, and 0.058 ppm, respectively. Also, by screening the insecticidal activity for compounds ( 2-5 ) against the cowpea aphid adults after 24 h of treatment, the LC 50 values were 1.655, 5.611, 0.421, and 7.957 ppm, respectively, and after 48 h of treatment, the LC 50 values were 0.116, 0.431, 0.062, and 0.539 ppm, respectively. These results proved that the presence of different functional groups in the structure of the aforementioned compounds furnished a range of biological activities as promising insecticides. The insecticidal activity results against cowpea aphid for these compounds showed a good biological activity using acetamiprid insecticide as a reference.
{"title":"SYNTHESIS AND TOXICOLOGICAL STUDIES ON DISTYRYL-SUBSTITUTED HETEROCYCLIC INSECTICIDES","authors":"S. A. Abdel-Raheem, A. El-Dean, R. Zaki, R. Hassanien, M. El-Sayed, M. Sayed, Aly A. Abd-Ella","doi":"10.17628/ECB.2021.10.225-229","DOIUrl":"https://doi.org/10.17628/ECB.2021.10.225-229","url":null,"abstract":"The toxicity of four pyridine-containing neonicotinoid analogues as potential insecticides against cowpea aphid, Aphis craccivora Koch, has been evaluated. The four pyridine compounds are 2-((2-oxopropyl)thio)-4,6-distyrylnicotinonitrile ( 2 ), 2-acetyl-3-amino-4,6-distyrylthieno[2,3- b ]pyridine ( 3 ), ethyl 2-((3-cyano-4,6-distyrylpyridin-2-yl)thio)acetate ( 4 ), and ethyl 3-amino-4,6-distyrylthieno[2,3- b ]pyridine-2-carboxylate ( 5 ). By screening the insecticidal activity for compounds ( 2-5 ) against the cowpea aphid nymphs after 24 h of treatment, the LC 50 values were 0.133, 0.687, 0.171, and 0.771 ppm, respectively, and after 48 h of treatment, the LC 50 values were 0.016, 0.111, 0.029, and 0.058 ppm, respectively. Also, by screening the insecticidal activity for compounds ( 2-5 ) against the cowpea aphid adults after 24 h of treatment, the LC 50 values were 1.655, 5.611, 0.421, and 7.957 ppm, respectively, and after 48 h of treatment, the LC 50 values were 0.116, 0.431, 0.062, and 0.539 ppm, respectively. These results proved that the presence of different functional groups in the structure of the aforementioned compounds furnished a range of biological activities as promising insecticides. The insecticidal activity results against cowpea aphid for these compounds showed a good biological activity using acetamiprid insecticide as a reference.","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"10 1","pages":"225-229"},"PeriodicalIF":0.0,"publicationDate":"2021-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43414555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-23DOI: 10.17628/ECB.2021.10.199-204
Prashant Katharotiya, Siva Prasad Das
We are reporting a series of chalcone based corrosion inhibitors for mild steel. The compounds were synthesized by grinding azoacetophenone and substituted aromatic aldehyde together in the presence of a base. The compounds were isolated in high purity. The synthesized chalcones' corrosion inhibition activity was studied using weight loss and acidimetric method for mild steel in 1 M hydrochloric acid. The experimental results showed that all corrosion inhibitors' inhibition efficiency increases with an increase in concentration and decreases with an increase in temperature. The good inhibition activity is attributed to the formation of a protective layer on mild steel surfaces. Adsorption of inhibitor on mild steel surface obeyed Langmuir's adsorption isotherm. The mechanical properties of mild steel specimen were also evaluated with Universal Testing Machine (UTM).
{"title":"SYNTHESIS, CHARACTERIZATION AND INVESTIGATION OF CHALCONE AS CORROSION INHIBITORS FOR MILD STEEL IN HYDROCHLORIC ACID","authors":"Prashant Katharotiya, Siva Prasad Das","doi":"10.17628/ECB.2021.10.199-204","DOIUrl":"https://doi.org/10.17628/ECB.2021.10.199-204","url":null,"abstract":"We are reporting a series of chalcone based corrosion inhibitors for mild steel. The compounds were synthesized by grinding azoacetophenone and substituted aromatic aldehyde together in the presence of a base. The compounds were isolated in high purity. The synthesized chalcones' corrosion inhibition activity was studied using weight loss and acidimetric method for mild steel in 1 M hydrochloric acid. The experimental results showed that all corrosion inhibitors' inhibition efficiency increases with an increase in concentration and decreases with an increase in temperature. The good inhibition activity is attributed to the formation of a protective layer on mild steel surfaces. Adsorption of inhibitor on mild steel surface obeyed Langmuir's adsorption isotherm. The mechanical properties of mild steel specimen were also evaluated with Universal Testing Machine (UTM).","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"10 1","pages":"199-204"},"PeriodicalIF":0.0,"publicationDate":"2021-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47636753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-23DOI: 10.17628/ECB.2021.10.205-217
A. Azab
Cistaceae plant family is one of the most under-investigated families in our region. Few plants of this family were reasonably studied, but most of them were either totally “ignored” or very limitedly published. Those that were studied reveal the richness in special natural products that have unique structures with special sub-units. Even traditional medicines worldwide made very little use of these plants, compared with other plant families that grow in Israel and Palestine. In this short review article, we will present some ethnomedicinal uses of this family's plants, along with a comprehensive literature survey of medicinal, biological and other activities published by modern research. The presentation will include tables and figures for the convenience of readers. The discussion section will focus on some of the studies about chemistry and the biochemistry of the special natural products of this family and the importance of accurate scientific reporting. To the best of our knowledge, a review article about this plant family of our region was never published and it will be a significant contribution since very few review articles about this family were published hitherto. Conclusions and future research recommendations are presented for the benefit of interested scholars.
{"title":"CISTACEAE PLANTS OF ISRAEL AND PALESTINE. UNDER-INVESTIGATED FAMILY WITH GREAT POTENTIAL","authors":"A. Azab","doi":"10.17628/ECB.2021.10.205-217","DOIUrl":"https://doi.org/10.17628/ECB.2021.10.205-217","url":null,"abstract":"Cistaceae plant family is one of the most under-investigated families in our region. Few plants of this family were reasonably studied, but most of them were either totally “ignored” or very limitedly published. Those that were studied reveal the richness in special natural products that have unique structures with special sub-units. Even traditional medicines worldwide made very little use of these plants, compared with other plant families that grow in Israel and Palestine. In this short review article, we will present some ethnomedicinal uses of this family's plants, along with a comprehensive literature survey of medicinal, biological and other activities published by modern research. The presentation will include tables and figures for the convenience of readers. The discussion section will focus on some of the studies about chemistry and the biochemistry of the special natural products of this family and the importance of accurate scientific reporting. To the best of our knowledge, a review article about this plant family of our region was never published and it will be a significant contribution since very few review articles about this family were published hitherto. Conclusions and future research recommendations are presented for the benefit of interested scholars.","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"10 1","pages":"205-217"},"PeriodicalIF":0.0,"publicationDate":"2021-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47324455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-23DOI: 10.17628/ECB.2021.10.191-198
A. Souza, M. Abreu, J. F. Oliveira‐Júnior, F. Aristone, W. A. Fernandes, R. Graf, Taynã Maria Pinto Lins, Carlos José Reis
The contribution of the precursors nitric oxide (NO), nitrogen dioxide (NO 2 ), and meteorological factors were evaluated in relation to the formation of nocturnal O 3 in Campo Grande – MS, Brazil. The maximum nocturnal level identified in the study for NO 2 , NO, and O 3 were 49.5, 58.0, and 30.0 μg.m -3 ,followed by the minimum values of 10.0, 6.0, and 9.0 μg m -3 and averages of 27.4, 21.2, and 18.3 μg m -3 , respectfully. The effect of NO 2 and NO titration emitted by anthropic sources in the urban area, which has the highest levels of NO 2 and NO in comparison with other locations, may be the main driving force of the lowest nocturnal O 3 value. During the night, O 3 titration at ground level occurred, resulting in the average value of the ratio, recorded as 25.6 with maximum and minimum values of 35.4 and 19.8 μg m -3 . It suggests that urban locations with wind speeds values of positive can lead to the accumulation of O 3 at night. The average ratio between the concentration of nocturnal ozone and diurnal surface ozone for Campo Grande was 55%.
{"title":"NIGHTLY OZONE CONCENTRATIONS AT GROUND LEVEL IN THE MIDWEST OF BRAZIL: NO AND NO2 CONCENTRATION ASSIGNMENTS","authors":"A. Souza, M. Abreu, J. F. Oliveira‐Júnior, F. Aristone, W. A. Fernandes, R. Graf, Taynã Maria Pinto Lins, Carlos José Reis","doi":"10.17628/ECB.2021.10.191-198","DOIUrl":"https://doi.org/10.17628/ECB.2021.10.191-198","url":null,"abstract":"The contribution of the precursors nitric oxide (NO), nitrogen dioxide (NO 2 ), and meteorological factors were evaluated in relation to the formation of nocturnal O 3 in Campo Grande – MS, Brazil. The maximum nocturnal level identified in the study for NO 2 , NO, and O 3 were 49.5, 58.0, and 30.0 μg.m -3 ,followed by the minimum values of 10.0, 6.0, and 9.0 μg m -3 and averages of 27.4, 21.2, and 18.3 μg m -3 , respectfully. The effect of NO 2 and NO titration emitted by anthropic sources in the urban area, which has the highest levels of NO 2 and NO in comparison with other locations, may be the main driving force of the lowest nocturnal O 3 value. During the night, O 3 titration at ground level occurred, resulting in the average value of the ratio, recorded as 25.6 with maximum and minimum values of 35.4 and 19.8 μg m -3 . It suggests that urban locations with wind speeds values of positive can lead to the accumulation of O 3 at night. The average ratio between the concentration of nocturnal ozone and diurnal surface ozone for Campo Grande was 55%.","PeriodicalId":11880,"journal":{"name":"European Chemical Bulletin","volume":"10 1","pages":"191-198"},"PeriodicalIF":0.0,"publicationDate":"2021-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48421785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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