探讨了多种影响因素对热激活过硫酸钾技术降解噻虫胺的影响,并检测反应体系中的活性自由基种类。结果表明,噻虫胺的降解符合准一级反应动力学规律。提高反应温度和S2O82-浓度,噻虫胺的降解速率都迅速增大;酸性和中性条件下的降解速率高于碱性条件;水溶液中Cl-和HCO3-的存在影响噻虫胺的降解效果;自由基探针实验验证了反应体系中同时存在SO4-·和·OH两种自由基,酸性和中性条件下,以SO4-·为主,碱性时·OH含量较多。
郑立庆, 林宜动, 李春立, 赵源
doaj +2 more sources
通过超声辅助过硫酸盐法成功制备了钴铁-氮-碳纳米管活化剂(CoFe@NCNTU),并将其用于活化过氧单硫酸盐(Peroxymonosulfate,PMS)以降解噻虫胺(Clothianidin,Clo)。实验结果表明,该活化剂具有丰富的Co-Fe活性位点,CoFe@NCNTU/PMS体系在20 min内对Clo的去除率可达99.7%,且在较宽pH范围(3~11)内均表现出良好的适应性。通过自由基猝灭实验、电子顺磁共振(EPR)及电化学分析发现,降解过程以单线态氧(¹O₂)和电子转移主导的非自由基路径为主,
刘润琦, 王超毅, 沈晓芳
doaj +4 more sources
[Determination of 107 typical pesticides and metabolites in raw water and drinking water by online-solid phase extraction coupled with ultra performance liquid chromatography-triple quadrupole mass spectrometry]. [PDF]
Chen Y, Lü J, Zhang L, Ye B, Jin N.
europepmc +1 more source
[Rapid screening and confirmation of 415 pesticide residues in red cabbages by liquid chromatography-quadrupole-time of flight-mass spectrometry]. [PDF]
Xie Y +5 more
europepmc +1 more source
[High-throughput screening of multi-pesticide residues in animal-derived foods by QuEChERS-online gel permeation chromatography-gas chromatography-tandem mass spectrometry]. [PDF]
Li J +6 more
europepmc +1 more source
[Recent developments of pesticide adsorbents based on cyclodextrins]. [PDF]
Zhang J, Li P, Ma J, Jia Q.
europepmc +1 more source
[Advances in application of molecularly imprinted polymers to the detection of polar pesticide residues]. [PDF]
Li T, Chang M, Shi X, Xu G.
europepmc +1 more source
[Recent application advances of covalent organic frameworks for solid-phase extraction]. [PDF]
Gao YY +8 more
europepmc +1 more source
[Simultaneous determination of 43 antibacterials from nine categories in water using automatic sample loading-solid phase extraction-ultra performance liquid chromatography-tandem mass spectrometry]. [PDF]
Xia BL +6 more
europepmc +1 more source
[Simultaneous determination of 76 pesticide residues in the traditional Chinese medicine by magnetic hydrophilic-lipophilic-balanced materials assisted matrix solid phase dispersion extraction-high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Wei D, Guo M.
europepmc +1 more source

