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当前位置: 首页 > 文章 > 喹啉铜在马铃薯中的残留及消解动态 农药 2020 (1) 46-48+55
Position: Home > Articles > Residues and Decline Dynamics of Fungicide Oxine-copper in Potatoes Agrochemicals 2020 (1) 46-48+55

喹啉铜在马铃薯中的残留及消解动态

作  者：
郑振山;陈勇达;赵旭东;张少军
单  位：
河北省农林科学院农产品质量安全研究中心农业农村部农产品质量安全风险评估实验室(石家庄)
关键词：
喹啉铜;残留;马铃薯;消解动态
摘  要：
[目的]研究杀菌剂喹啉铜在马铃薯上的残留规律。[方法]建立了马铃薯中喹啉铜残留量测定的高效液相色谱-串联质谱法;在河北、湖南2地开展喹啉铜在马铃薯上的田间残留试验。[结果]方法最低检出质量分数为0.10 mg/kg,在0.10～5.0 mg/kg残留水平内,添加回收率为75.8%～102.8%,变异系数为2.1%～6.7%。2地残留消解和最终残留量试验结果显示,喹啉铜在马铃薯植株上的半衰期分别为8.89、11.1 d;按推荐剂量108 g a.i./hm~2和加倍剂量162 g a.i./hm~2施药3～4次,距最后1次施药后7、14、21 d,喹啉铜在马铃薯中的残留量均小于0.10 mg/kg。[结论]喹啉铜按推荐剂量108 g a.i./hm~2施药3次,施药后7 d,马铃薯中喹啉铜残留量小于0.10 mg/kg,食用安全。
译  名：
Residues and Decline Dynamics of Fungicide Oxine-copper in Potatoes
作  者：
ZHENG Zhen-shan;CHEN Yong-da;ZHAO Xu-dong;ZHANG Shao-jun;Research Center of Quality and Safety of Agro-products, Hebei Academy of Agriculture and Forestry Sciences,Laboratory of Quality and Safety Risk Assessment for Agro-products,Ministry of Agriculture and Rural Affairs;
关键词：
oxine-copper;;residues;;potatoes;;decline dynamics
摘  要：
[Aims] To study the dynamics of degradation of oxine-copper residues in potatoes. [Methods] The method with liquid chromatography-tandem mass spectrometry was established to determine oxine-copper residues in potatoes.Field trials of oxine-copper residues in potatoes were conducted in Hebei and Hunan provinces. [Results] The limit of quantitation was 0.10 mg/kg. The recoveries were 75.8-102.8% and coefficients of variation were 2.1-6.7% between the concentration of 0.10-5.0 mg/kg. The results indicated that the half lives of oxine-copper in potatoes(stem leaf) were 11.1 and 8.89 d in Hebei and Hunan. According to the research, when oxine-copper being applied three and four times to potatoes fields with the dosages of active ingredient of 108 and 162 g a.i./ha, the residues of oxine-copper in potatoes at 7, 14 and 21 d after the last application were all less than 0.10 mg/kg. [Conclusions] When oxine-copper being applied three times to potatoes fields with the recommended dose of active ingredient of 108 g a.i./ha, the residues of oxine-copper in potatoes at 7 d after application were less than 0.10 mg/kg, which will be edible safely.

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