Dissipation and residues determination of propamocarb in ginseng and soil by high-performance liquid chromatography coupled with tandem mass spectrometry |
| |
Authors: | Chunwei Wang Yan Wang Jie Gao Yuncheng Xu Lili Cui |
| |
Institution: | 1. College of Agronomy, Jilin Agricultural University, Changchun, 130118, China 2. College of Resource and Environmental Science, Jilin Agricultural University, Changchun, 130118, China 3. Institute of Special Wild Economic Animal and Plant Science, CAAS, Changchun, 130118, China
|
| |
Abstract: | Two-year field trials were performed at two experimental sites to investigate dissipation and terminal residues of propamocarb in ginseng root, stem, leaf, and soil by high-performance liquid chromatography coupled with tandem mass spectrometry (HPLC-MS/MS). Mean recoveries ranged from 80.5 to 95.6 % with relative standard deviations (RSDs) of 5.5–9.1 % at fortified levels of 0.01, 0.02, 0.05 and 0.20 mg kg?1. The half-lives of propamocarb were 5.00–11.36 days in root, 5.07–11.46 days in stem, 6.83–11.31 days in leaf and 6.44–8.43 days in soil. The terminal residues of propamocarb were below the maximum residue limits (MRLs) of EU (0.20 mg kg?1) and South Korea (0.50 mg kg?1 in fresh ginseng and 1.0 mg kg?1 in dried ginseng) over 28 days after last spraying at recommended dosage. The results provide a quantitative basis for establishing the MRL and give a suggestion of safe and reasonable use of propamocarb in ginseng. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|