Toxicological & Environmental Chemistry最新文献_第8页

Exogenous selenium improves the physiological resistance of cucumber to cadmium stress 外源硒提高了黄瓜对镉胁迫的生理抗性

Toxicological & Environmental Chemistry Pub Date : 2020-08-06 DOI: 10.1080/02772248.2020.1798449

P. Jiang, Jie Liu, Menghua Chen, Guo-hui Yu, Shaohong You, Jieyue Li

引用次数: 5

Synthesis of Li-doped bismuth oxide nanoplates, Co nanoparticles modification, and good photocatalytic activity toward organic pollutants 锂掺杂氧化铋纳米片的合成，Co纳米颗粒的改性，对有机污染物具有良好的光催化活性

Toxicological & Environmental Chemistry Pub Date : 2020-07-30 DOI: 10.1080/02772248.2020.1798448

Hongjun Chen, Chunhu Yu, Z. Xue, Pengxiang Wang, Zi Wang, Qianmin Cong, L. Pei, C. Fan

{"title":"Synthesis of Li-doped bismuth oxide nanoplates, Co nanoparticles modification, and good photocatalytic activity toward organic pollutants","authors":"Hongjun Chen, Chunhu Yu, Z. Xue, Pengxiang Wang, Zi Wang, Qianmin Cong, L. Pei, C. Fan","doi":"10.1080/02772248.2020.1798448","DOIUrl":"https://doi.org/10.1080/02772248.2020.1798448","url":null,"abstract":"Abstract Lithium-doped bismuth oxide nanoplates with the thickness of 50–150 nm and tetragonal bismuth oxide, monoclinic lithium bismuthate phases have been synthesized via a simple hydrothermal process using lithium acetate and sodium bismuthate as the raw materials. Cobalt nanoparticles modified lithium-doped bismuth oxide nanoplates hybrids were obtained by an in situ photo-deposition route. The cobalt nanoparticles-modified nanoplates hybrids display significantly enhanced photocatalytic activity toward gentian violet compared with the nanoplates. Gentian violet solution can be totally degraded by the hybrids within 60 min under ultraviolet–visible light irradiation. The superior photocatalytic activity of the cobalt nanoparticles modified nanoplates hybrids originates from the superior charge transfer capacity and the energy band structure of the hybrids. The excellent photocatalytic performance makes the cobalt nanoparticles modified nanoplates hybrids a promising candidate as the photocatalyst for wastewater treatment.","PeriodicalId":23210,"journal":{"name":"Toxicological & Environmental Chemistry","volume":"3 1","pages":"356 - 385"},"PeriodicalIF":0.0,"publicationDate":"2020-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88223944","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}

引用次数: 12

Changes in surface water quality from small-scale gold mining operations in the Surinamean rainforest 苏里南雨林中小规模金矿开采活动对地表水质量的影响

Toxicological & Environmental Chemistry Pub Date : 2020-07-27 DOI: 10.1080/02772248.2020.1792908

T. Lewis, Pablo A. Garcia-Chevesich, T. Wildeman, J. Sharp

{"title":"Changes in surface water quality from small-scale gold mining operations in the Surinamean rainforest","authors":"T. Lewis, Pablo A. Garcia-Chevesich, T. Wildeman, J. Sharp","doi":"10.1080/02772248.2020.1792908","DOIUrl":"https://doi.org/10.1080/02772248.2020.1792908","url":null,"abstract":"Abstract Small-scale miners often engage in environmentally damaging activities, are subject to poor safety conditions, and utilize inefficient mineral extraction technologies. Here, we explore environmental impacts to surface waters from regional artisanal small-scale gold placer mining operations conducted in iron and aluminum-rich saprolites found within the lateritic, interior Amazon rainforest of Suriname. Heavy equipment was utilized to release gold from its host material followed by amalgamation and gravity separation. In contrast with background tributary recordings, streams adjacent to these gold mining operations consistently contained turbidity measurements that exceeded United States’ EPA guidelines for aquatic species of 50 nephelometric turbidity units and were typically in the hundreds to thousands of units. Turbidity was further heightened in association with precipitation events. Mercury played a prominent role in whole ore amalgam concentration practices. Freshwater fish from the region were found to harbor mercury that encroached upon public health criteria. Dissolved phase metals present further ecotoxicological challenges to the region, but their association with mining activities was less clear. These findings collectively reveal that small-scale placer gold mining practices in the Surinamese rainforest result in an increase of suspended sediments and release of mercury into waterways that could impact communities that depend upon local fisheries.","PeriodicalId":23210,"journal":{"name":"Toxicological & Environmental Chemistry","volume":"76 1","pages":"334 - 355"},"PeriodicalIF":0.0,"publicationDate":"2020-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78313221","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}

引用次数: 1

New particle formation observed from a rain shadow region of the Western Ghats, India 从印度西高止山脉的雨影区观察到的新粒子形成

Toxicological & Environmental Chemistry Pub Date : 2020-07-21 DOI: 10.1080/02772248.2020.1789134

M. Varghese, P. Leena, P. Murugavel, S. Bankar, K. Todekar, S. Chowdhuri, P. Safai, N. Malap, M. Konwar, S. Dixit, Y. J. Rao, T. Prabha

{"title":"New particle formation observed from a rain shadow region of the Western Ghats, India","authors":"M. Varghese, P. Leena, P. Murugavel, S. Bankar, K. Todekar, S. Chowdhuri, P. Safai, N. Malap, M. Konwar, S. Dixit, Y. J. Rao, T. Prabha","doi":"10.1080/02772248.2020.1789134","DOIUrl":"https://doi.org/10.1080/02772248.2020.1789134","url":null,"abstract":"Abstract This study reports on new particle formation (NPF) and characteristic features observed from a rural site falling in the rainshadow of the Western Ghats in peninsular India. A total of 35 NPF events observed during August 2018 - January 2019 are classified and analyzed here. The apparent formation rates ranged from 0.2 to 10.0 cm–3 s–1, while the growth rates of nucleation mode particles ranged from 1.2 to 13.8 nm h–1. The frequency of occurrence was least during August (core monsoon) and highest during post-monsoon. The local winds were calm and southeasterly to easterly (from the urban centre) supplying the essential precursor gases during October and November, leading to a frequent occurrence of nucleation events. Observations suggest that an increased condensation sink could limit the NPF while promoting Aitken mode growth. The newly formed particles accounted for about 10–80% of the total aerosol concentration. These newly formed particles were able to act as cloud condensation nuclei after growing to approximately 50 nm with an average activation fraction of 0.4.","PeriodicalId":23210,"journal":{"name":"Toxicological & Environmental Chemistry","volume":"4 1","pages":"305 - 333"},"PeriodicalIF":0.0,"publicationDate":"2020-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73059141","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}

引用次数: 8

The role of root organic acids in the tolerance of Festuca rubra to zinc, lead and cadmium 根有机酸在红羊茅耐锌、铅和镉中的作用

Toxicological & Environmental Chemistry Pub Date : 2020-07-17 DOI: 10.1080/02772248.2020.1791866

Jesús Gómez, S. García, E. Esteban, P. Zornoza, R. Carpena

引用次数: 2

Total and methyl mercury in small marine biota caught off the Coast of Chennai, India 印度金奈海岸捕获的小型海洋生物群中的总汞和甲基汞

Toxicological & Environmental Chemistry Pub Date : 2020-07-15 DOI: 10.1080/02772248.2020.1791867

R. Keerthana, A. Qureshi

引用次数: 1

Microwave-assisted synthesized zinc nanoparticles attenuate cisplatin-induced testicular toxicity in mice 微波辅助合成锌纳米颗粒减弱顺铂诱导的小鼠睾丸毒性

Toxicological & Environmental Chemistry Pub Date : 2020-07-15 DOI: 10.1080/02772248.2020.1789135

Mojtaba Shakibaie, H. Forootanfar, E. Jafari, A. Salimi, Mohsen Doostmohammadi, H. Rahimi

{"title":"Microwave-assisted synthesized zinc nanoparticles attenuate cisplatin-induced testicular toxicity in mice","authors":"Mojtaba Shakibaie, H. Forootanfar, E. Jafari, A. Salimi, Mohsen Doostmohammadi, H. Rahimi","doi":"10.1080/02772248.2020.1789135","DOIUrl":"https://doi.org/10.1080/02772248.2020.1789135","url":null,"abstract":"Abstract The purpose of this study was to investigate the protective effects of zinc nanoparticles against cisplatin-induced testicular toxicity in mice. Zinc nanoparticles were produced by microwave-assisted synthesis using Lavandula vera extract as reducing agent. Single doses of cisplatin (7 mg/kg, intraperitoneally) and ZnSO4 (10 mg/kg, orally), and various doses of zinc nanoparticles (10 − 50 mg/kg, orally) and vitamin E (100 mg/kg, interaperitoneally) were administered. The protective role of zinc nanoparticles was determined biochemically and histologically. Gradual reduction in malondialdehyde levels and elevation in glutathione levels and in the activities of superoxide dismutase and catalase upon administration of zinc nanoparticles were observed. The pathology of mice treated with cisplatin/vitamin E and cisplatin/zinc nanoparticles were apparently equal, but vitamin E treatment was more effective in lowering oxidative stress markers than zinc nanoparticles. These findings suggest that co-administration of zinc nanoparticles with cisplatin could prevent adverse effects on the male reproductive system via their potential antioxidant properties.","PeriodicalId":23210,"journal":{"name":"Toxicological & Environmental Chemistry","volume":"39 1","pages":"386 - 398"},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86203927","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}

引用次数: 4

Aflatoxin B1 in walnuts: a probabilistic cancer risk assessment for Iranians 核桃中的黄曲霉毒素B1:伊朗人患癌症的概率风险评估

Toxicological & Environmental Chemistry Pub Date : 2020-07-05 DOI: 10.1080/02772248.2020.1791868

Seyedeh Faezeh Taghizadeh, R. Rezaee, Hasan Badibostan, G. Karimi

{"title":"Aflatoxin B1 in walnuts: a probabilistic cancer risk assessment for Iranians","authors":"Seyedeh Faezeh Taghizadeh, R. Rezaee, Hasan Badibostan, G. Karimi","doi":"10.1080/02772248.2020.1791868","DOIUrl":"https://doi.org/10.1080/02772248.2020.1791868","url":null,"abstract":"Abstract On a global basis, walnuts rank second behind almonds in nut production and China, the United States and Iran are, respectively top producers of this nut. Generally, the nuts are exposed to relatively high temperatures and high humidity which predispose fungal growth. Hence, it is of crucial importance to regularly check the levels of toxins produced by fungi in these products, and subsequently, assess possible risk posed to human health via exposure to such toxins. Aflatoxin B1 as a secondary fungal metabolite widely found in many foodstuffs is considered a public health concern worldwide due to its genotoxic and carcinogenic properties. In this study, walnut samples collected from five different orchards located in five cultivation zones in Iran, were evaluated for aflatoxin B1 concentrations using high performance liquid chromatography with fluorescence detection. Aflatoxin B1 were found in more than half of the samples and its level ranged from 0.8–14.5 µg/kg. The present analysis showed a low lifetime carcinogenic risk for walnut consumption in Iranian consumers. The annual cancer risks (individual lifetime hepatic cancer risk) posed by consumption of walnuts were 1.0 × 10−4 and 3.4 × 10−6 in 105 persons (for hepatitis B positive and hepatitis B negative, respectively).","PeriodicalId":23210,"journal":{"name":"Toxicological & Environmental Chemistry","volume":"117 1","pages":"506 - 519"},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80147318","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}

引用次数: 19

Changes in copper load in hepatocytes of Ohrid trout in relation to the ovarian maturation cycle 鲑鱼肝细胞铜负荷的变化与卵巢成熟周期的关系

Toxicological & Environmental Chemistry Pub Date : 2020-07-02 DOI: 10.1080/02772248.2020.1781854

M. Jordanova, K. Rebok, E. Rocha, M. J. Rocha

引用次数: 0

Effects of growing seasons and genotypes on the accumulation of Cd in Brassica chinensis 生长季节和基因型对芸苔Cd积累的影响

Toxicological & Environmental Chemistry Pub Date : 2020-07-02 DOI: 10.1080/02772248.2020.1778699

Y. Wan, Qianlei Gao, Qi Wang, Hua-fen Li

引用次数: 0