Dissipation of Emamectin Benzoate Residues in Rice and Rice-Growing Environments
Ligang Deng,
Lu Chen,
Shuai Guan,
Junhua Liu,
Jingyun Liang,
Xia Li,
Zengmei Li
Affiliations
Ligang Deng
Key Laboratory of Test Technology on Food Quality and Safety of Shandong Province, Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, 202 Gongyebeilu Road, Jinan 250100, China
Lu Chen
Key Laboratory of Test Technology on Food Quality and Safety of Shandong Province, Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, 202 Gongyebeilu Road, Jinan 250100, China
Shuai Guan
Key Laboratory of Test Technology on Food Quality and Safety of Shandong Province, Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, 202 Gongyebeilu Road, Jinan 250100, China
Junhua Liu
Key Laboratory of Test Technology on Food Quality and Safety of Shandong Province, Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, 202 Gongyebeilu Road, Jinan 250100, China
Jingyun Liang
Key Laboratory of Test Technology on Food Quality and Safety of Shandong Province, Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, 202 Gongyebeilu Road, Jinan 250100, China
Xia Li
Key Laboratory of Test Technology on Food Quality and Safety of Shandong Province, Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, 202 Gongyebeilu Road, Jinan 250100, China
Zengmei Li
Key Laboratory of Test Technology on Food Quality and Safety of Shandong Province, Institute of Agricultural Quality Standards and Testing Technology Research, Shandong Academy of Agricultural Sciences, 202 Gongyebeilu Road, Jinan 250100, China
The experiment developed the ultra-high-performance liquid chromatography−tandem mass spectrometry (UPLC/MS/MS) method for testing emamectin benzoate, and studied the metabolism of emamectin benzoate in rice plants and rice-growing environments via application of this testing method. The dissipation curve of emamectin benzoate standard substance was good at 0.5−200 μg L−1, and its correlation coefficient was greater than 0.99. In the concentration range of 0.1−50 μg kg−1, the average recovery rate of plants, soil, and field water was 82 %−102 %, and relative standard deviation (RSD) was between 0.3 % and 15.9 %. Half-lives in rice plants and soil were 0.8−2.8 days and 1.9−3.8 days, respectively, and emamectin benzoate was not detected in rice or rice hull. The experiment showed that emamectin benzoate is harmless to human health at the concentration recommended by the manufacturer.
