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Pyrimethanil residue and dissipation in tomatoes and soil under field conditions

文献类型: 外文期刊

作者: Liu, Congyun 1 ; Lu, Dahai 1 ; Wang, Youcheng 3 ; Wan, Kai 1 ; Huang, Jianxiang 1 ; Wang, Fuhua 1 ;

作者机构: 1.Guangdong Acad Agr Sci, Publ Monitoring Ctr Agroprod, Guangzhou 510640, Guangdong, Peoples R China

2.Minist Agr, Key Lab Testing & Evaluat Agroprod Safety & Qual, Guangzhou, Guangdong, Peoples R China

3.Huazhong Agr Univ,

关键词: Pyrimethanil;Residue;Dissipation;Tomato;Soil

期刊名称:ENVIRONMENTAL MONITORING AND ASSESSMENT ( 影响因子:2.513; 五年影响因子:2.871 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: A residue analytical method to detect pyrimethanil in tomatoes and soil was developed by using high-performance liquid chromatography with a diode array detector. The dissipation and residue level of pyrimethanil in tomatoes and soil were also investigated. Results showed that the average recoveries are in the range of 87.2 to 90.0 % with a relative standard difference of 2.22 to 7.61 % in tomatoes and soil. In Guangdong, Shandong, and Yunnan, the half-lives of pyrimethanil in tomatoes were 1.8, 3.6, and 4.2 days and those in soil were 4.0, 3.3, and 3.9 days, respectively. The dissipation rate of pyrimethanil in tomatoes and soil was affected by temperature, precipitation, and soil type. The terminal residue results showed that when pesticide pyrimethanil was used under the experiment design, all the results were far below the available maximum residue limits. Low residues in tomatoes and soil suggest that this pesticide is safe to use under the recommended dosage.

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