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为了解吉林长白山人参及土壤中毒死蜱的消解动态,利用建立的液相色谱串联质谱(LC-MS/MS)法检测了抚松、集安两地人参和土壤中毒死蜱的残留量,制订了该农药田间使用规程。结果表明,在以质量浓度为0.01、0.02、0.20 mg/kg毒死蜱的添加回收率试验中,人参鲜根和土壤中平均回收率分别为81.00%~90.40%,87.48%~93.20%,变异系数分别为7.05%~9.64%,7.32%~10.35%。残留动态试验结果显示,当施用有效成分量为4 500g/hm~2时,人参鲜根和土壤的半衰期分别为12.2~15.2 d和15.6~22.8 d。建议将毒死蜱在人参中的最大残留限量定为0.10 mg/kg。当田间使用45%毒死蜱EC有效成分用量为2 600~4 500 g/hm~2时,人参的安全间隔期为60 d。
In order to understand the dynamic state of pyrolysis of chlorpyrifos in ginseng and soil in Changbai Mountain of Jilin Province, the residues of chlorpyrifos in ginseng and soil in Fusong and Ji’an were detected by LC-MS / MS, Pesticide field use rules. The results showed that the average recoveries of fresh roots and soil of ginseng were 81.00% -90.40% and 87.48% -93.20% at the recoveries of chlorpyrifos of 0.01, 0.02 and 0.20 mg / kg, respectively. The coefficient of variation For 7.05% ~ 9.64%, 7.32% ~ 10.35%. The results of the residual dynamic test showed that the half-lives of fresh roots and soil of ginseng were 12.2 ~ 15.2 d and 15.6 ~ 22.8 d, respectively, when the effective component was 4 500 g / hm ~ 2. It is recommended that the maximum residue limit of chlorpyrifos in ginseng be set at 0.10 mg / kg. When 45% chlorpyrifos EC was used in the field, the safety interval of ginseng was 60 d when the dosage of EC was 2 600 ~ 4 500 g / hm ~ 2.