吡唑醚菌酯在香蕉中的低温贮藏稳定性试验  

Study on the Low Temperature Storage Stability of Pyraclostrobine in Banana

作　　者：赵方方[1,2] 谢德芳[1,2] 吕岱竹[1,2] 张月[1,2] 林靖凌[1,2] 吴琼[1,2] 

机构地区：[1]中国热带农业科学院分析测试中心,海口571101 [2]中国热带农业科学院海南省热带果蔬产品质量安全重点实验室,海口571101

出　　处：《湖北农业科学》2017年第8期1537-1540,共4页Hubei Agricultural Sciences

基　　金：农业部农药残留试验项目(2013F285);中国热带农业科学院分析测试中心主任基金项目(2013-01);蔬菜产品未知危害因子识别与已知危害因子安全性评估项目(GJFP2015001)

摘　　要：对吡唑醚菌酯在香蕉中的低温贮藏稳定性进行了研究,同时建立了吡唑醚菌酯在香蕉中的残留分析方法。结果表明,在0.01~0.10 mg/kg添加范围内,吡唑醚菌酯在香蕉中的平均回收率为82%~97%,变异系数为1.3%~2.7%;方法最小检出量为1×10^(-10) g,最低检出浓度为0.01 mg/kg。通过样品添加和-20℃下低温贮藏的方法,设定采样间隔分别为0、1、3、6及12个月。取样检测显示,吡唑醚菌酯的含量没有明显变化,说明该农药在-20℃下的香蕉样品中至少贮藏12个月是稳定的。The low temperature storage stability of pyraclostrobine in banana was studied,and the method for the determination of pyraclostrobine residues in banana was established. Average recoveries of pyraclostrobine in banana were found in the range of 82%-97% at the three spiking levels from 0.01 to 0.10 mg/kg with relative standard deviations of 1.3%-2.7%. The lowest de- tection limit of instrument for pyraclostrobine was 1×10^-10g,and the limit of quantitation was 0.01 mg/kg. The content of pyra- clostrobine was not significantly changed by sample addition and -20 ℃ at low temperature. The sampling interval was 0,1, 3,6 and 12 months. It was showed that the pesticide was stable at least 12 months in the banana samples at -20℃.

关 键 词：吡唑醚菌酯 香蕉 低温贮藏稳定性 液相色谱 

分 类 号：X836[环境科学与工程—环境工程]