New insights to improve the storage stability of pesticide residues in analytical samples
文献类型： 外文期刊
作者： Bian, Yanli 1 ; Yu, Zhibo 2 ; Zhang, Aijuan 1 ; Qi, Xiaoxue 1 ; Li, Changyou 1 ; Wang, Shuqi 1 ; Yin, Jiaqi 1 ; Liang, Lin 1 ;
作者机构： 1.Shandong Acad Agr Sci, Shandong Acad Pesticide Sci Inst Residue Technol, Jinan 250033, Shandong, Peoples R China
2.Inst Control Agrochem Shandong Prov, Jinan 250100, Peoples R China
3.Shandong Acad Agr Sci, Shandong Acad Pesticide Sci Inst Residue Technol, 234 Beiyuan St, Jinan 250033, Shandong, Peoples R China
关键词： Storage stability; Sample form; Metal ions; Peroxidase; Celery
期刊名称：MICROCHEMICAL JOURNAL （ 影响因子：4.8； 五年影响因子：4.5 ）
ISSN： 0026-265X
年卷期： 2024 年 199 卷
页码：
收录情况： SCI
摘要： The factors affecting the storage stability of dichlorvos, malathion, diazinon and chlorpyrifos in celery were studied, and the mechanism of improvement of storage stability was explained. Residues of dichlorvos and malathion may be more stable in homogenized celery than in coarse form. The important role of storage form may be attributed to the difference of enzymes in the matrix. The results showed that POD activity in homogenized celery was lower than that in coarse one, and pesticide residues were more stable in homogenate. The interaction between POD and pesticide molecules was confirmed by computational chemistry method. Moreover, exogenous metal ions (Fe3+ and Al3+) could significantly inhibit POD activity and improve stability of malathion, dichlorvos, and chlorpyrifos. When the concentration of ions increased to 40 mmol/L, the residue remaining of dichlorvos and malathion increased significantly. Instead, the significant reduction in diazinon was found because it was more susceptible to changes in pH, where acidic conditions were not conducive to its stable presence. Except in a few cases, the addition of metal ions can directly or indirectly improve storage stability of organophosphorus pesticide residues by inhibiting enzyme activity.
- 相关文献
作者其他论文 更多>>
-
Residue behaviors, processing factors and transfer rates of pesticides and metabolites in rose from cultivation to consumption
作者：Bian, Yanli;Feng, Yizhi;Zhang, Aijuan;Qi, Xiaoxue;Pan, Jinju;Han, Jifeng;Liang, Lin;Liang, Lin
关键词：HPLC-MS; MS; Roses; Drying; Brewing; Antioxidant capacity
-
Study on stability improvement measures of malathion in different matrices
作者：Dong, Jiannan;Chen, Guofeng;Zhao, Lin;Feng, Yizhi;Bian, Yanli
关键词：Malathion; storage stability; storage form; exogenous additive
-
Residue distribution and risk assessment of bifenazate and its metabolite in garlic plant
作者：Bian, Yanli;Feng, Yizhi;Zhang, Aijuan;Qi, Xiaoxue;Pan, Jinju;Han, Jifeng;Ma, Xingang;Liang, Lin
关键词：Bifenazate; Metabolite; Conversion; Residue distribution; Risk assessment
-
Dissipation, Residue, and Dietary Risk Assessment of Methoxyfenozide, Chlorantraniliprole, Indoxacarb, Lufenuron, and Chlorfenapyr in Spinach Using a Modified QuEChERS Method Combined with a Tandem Mass Spectrometry Technique
作者：Feng, Yizhi;Zhang, Aijuan;Bian, Yanli;Pan, Jinju;Han, Jifeng;Ma, Xingang;Qi, Xiaoxue;Liang, Lin;Zuo, Bojun;Zhang, Guofu;Zhou, Li;Yang, Sumei
关键词：QuEChERS; spinach; dissipation; residue; risk assessment
-
Residue extrapolation and group maximum residue level recommendation for four pesticides in the four kinds of vegetable crop groups
作者：Bian, Yanli;Bian, Yanli;Guo, Gang;Liu, Fengmao;Li, Xiaohan;Guo, Gang
关键词：Crop classification; representative crops; residue extrapolation; risk assessment; MRL recommendation; minor crop
-
Effect of storage states on stability of three organophosphorus insecticide residues on cowpea samples
作者：Bian, Yanli;Wang, Boning;Liu, Fengmao;Wang, Yihan;Huang, Hongwei;Bian, Yanli
关键词：storage stability; organophosphorus insecticides; cowpea; storage state; enzyme
