Photodegradation of the Novel Herbicide Pyraquinate in Aqueous Solution: Kinetics, Photoproducts, Mechanisms, and Toxicity Assessment
文献类型: 外文期刊
第一作者: Jiao, Bin
作者: Jiao, Bin;Wang, Kuan;Chang, Yiming;Dong, Fengshou;Pan, Xinglu;Wu, Xiaohu;Xu, Jun;Liu, Xingang;Zheng, Yongquan;Zheng, Yongquan
作者机构:
关键词: pyraquinate; photolytic kinetics; mechanisms; photoproducts; toxicity
期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:6.1; 五年影响因子:6.3 )
ISSN: 0021-8561
年卷期: 2023 年 71 卷 10 期
页码:
收录情况: SCI
摘要: Pyraquinate, a newly developed 4-hydroxyphenylpyruvate dioxygenase class herbicide, has shown excellent control of resistant weeds in paddy fields. However, its environmental degradation products and corresponding ecotoxicological risks after field application remain ambiguous. In this study, we systematically investigate the photolytic behaviors of pyraquinate in aqueous solutions and in response to xenon lamp irradiation. The degradation follows first-order kinetics, and its rate depends on pH and the amount of organic matter. No vulnerability to light radiation is indicated. Ultrahigh-performance liquid chromatography with quadrupole-time-of-flight mass spectrometry and UNIFI software analysis reveals six photoproducts generated by methyl oxidation, demethylation, oxidative dechlorination, and ester hydrolysis. Gaussian calculation suggests that activities due to hydroxyl radicals or aquatic oxygen atoms caused these reactions on the premise of obeying thermodynamic criteria. Practical toxicity test results show that the toxicity of pyraquinate to zebrafish embryos is low but increases when the compound is combined with its photoproducts.
分类号:
- 相关文献
作者其他论文 更多>>
-
Determination of a novel pesticide cyetpyrafen and its two main metabolites in crops, soils and water
作者:Wang, Sijia;Li, Runan;Dong, Fengshou;Li, Yuanbo;Zheng, Yongquan
关键词:Cyetpyrafen; Metabolites; Residue analysis; Multiple-matrices; UHPLC-MS; MS; Metabolism
-
The long-acting herbicide mesosulfuron-methyl inhibits soil microbial community assembly mediating nitrogen cycling
作者:Cao, Junli;Zhang, Ying;Dai, Gaochen;Cui, Kai;Wu, Xiaohu;Xu, Jun;Dong, Fengshou;Pan, Xinglu;Zheng, Yongquan;Cao, Junli;Zhang, Ying;Dai, Gaochen;Qin, Fanxin
关键词:Mesosulfuron-methyl; Soil N -cycle functional genes; Microbial community assembly; Network modules; Structural equation model
-
Sodium alginate-based composite microspheres for controlled release of pesticides and reduction of adverse effects of copper in agricultural soils
作者:Du, Yu;Zhang, Qizhen;Yu, Manli;Jiao, Bin;Chen, Fuliang;Yin, Mingming
关键词:Pesticide; Microspheres; Protaetia brevitarsis; Copper; Agricultural soils; Bacterial community
-
Isolation and characterization of novel soil bacterium, Klebsiella pneumoniae strain GS7-1 for the degradation of zearalenone in major cereals
作者:Imade, Francis Nosakhare;Humza, Muhammad;Ullah, Sana;Jahan, Israt;Geng, Hairong;Xing, Fuguo;Liu, Yang;Liu, Yang;Imade, Francis Nosakhare;Eseigbe, Daniel;Dada, Oyeyemi Adigun;Zheng, Yongquan
关键词:Degradation; Extracellular supernatant; Klebsiella pneumoniae strain GS7-1; Zearalenone
-
A 2-bp deletion in the protein kinase domain region of the ERECTA-like receptor kinase gene in cucumber results in short internode phenotype
作者:Xu, Xuewen;Hu, Qiming;Wang, Jiaxi;Wang, Xueting;Xu, Jun;Yang, Xiaodong;Chen, Xuehao;Xu, Xuewen;Chen, Xuehao;Lou, Lina
关键词:Cucumber; Short internode; Mutant; ERECTA; Auxin
-
The role of miRNA-26a-5p and target gene socs1a in flutolanil induced hepatotoxicity of zebrafish at environmental relevant levels
作者:Yang, Yang;Xu, Xiyan;Chang, Jinhe;Li, Yuanbo;Xu, Xiyan;Zheng, Yongquan;He, Bin;Li, Yuanbo
关键词:Flutolanil; Environmental concentration; Zebrafish; HepG2; Hepatotoxicity; miRNAs-mRNAs
-
Synthesis and Biological Profiling of Novel Strigolactone Derivatives for Arabidopsis Growth and Development
作者:Kang, Zhaoyong;Yan, Yujie;Dong, Xiaoqi;Xu, Jun;Gao, Qingzhi;Liu, Shengnan;Lu, Ruirui;Zheng, Dong;Li, Suhua;Gao, Qingzhi
关键词:strigolactones; GR24 analogues; phytohormones; structure-activity relationship; Arabidopsis