嘧菌酯在黄瓜和土壤中残留降解动态研究.pdf

第41卷第11期
应用化工
Vol, 41 No. E
2012年11月
Applied Chemical Industry
Nov.2012
喀菌酯在黄瓜和土壤中残留
降解动态研究
石亚中',段劲生2,孙明娜,伍亚华,钱时权',许晖
(1.蚌埠学院生物与食品工程系,安徽蚌埠233030;2.安徽省农科院植物保护研究所,安徽合肥230031)
摘要:采用田间试验方法,运用气相色谱检测嘧菌酯在黄瓜和土壤中的残留与降解规律。结果表明,嘧菌酯的最
小检出量为5.0x10-"g,黄瓜和土壤中最低检测浓度均为0.01mg/kg,黄瓜和土壤中嘧菌酯添加浓度分别为
0.01~1mg/kg,平均回收率黄瓜中为8.-34%~94.81%,变异系数为8.41%~13,59%,土壤中为85.01%
94.02%,变异系数为4.00%~8,20%;该方法的准确度和精确度满足农药残留测定的要求。消解动态实验表明,
嘧菌酯在黄瓜和土壤中降解半衰期分别为2.8d和4.9d
关键词:嘧菌酯;黄瓜;土壤;残留
中图分类号:TQ4560.2;TS207
文獻标识码:A
文章编号:1671-3206(2012)11-190]-04
Degradation of azoxystrobin residue in cucumber and soil
SHI Ya-zhong, DUAN in-sheng, SUN Ming-na, WU Ya-hua
QIAN Shi-quan, XU Hui
1. Department of Biotechnology and Food Engineering, Bengbu College, Bengbu 233030, China
2. Institute of Plant Protection, Anhui Academy of Agricultural Sciences, Hefei 230031, China)
Abstract: Determination and degradation of azoxystrobin residue in the cucumber and soil were conducted
using field test methods and gas chromatography. The results indicated that the detection limit for azoxys-
robin was 5.0 10 g. The minimum detectable conentration of the method was 0. 01 mg/kg in cu
cumber and soil add a concentration of azoxystrobin in cucumber and soil to 0. 01 1 mg/kg, the
recovery of azoxystrobin were 88.34%-94.81% for the cucumber and 85.01%-94.02% for soil with
coefficients of variation of.41% 13.59, 4.00%-8.20 respectively. This method for the accurary
and precision to satisfied the requirements of pesticide residue determination. Degradation test indicated
that the half-life degradation of azoxystrobin was 2.8d and 4.9 d in cucumber and soil respectively.
Key words: azoxystrobin; cucumber; soil; residue
嘧菌酯是一种仿生合成的甲氧基丙烯酸酯类广对几乎所有的子囊菌亚门、担子菌亚门等的病害如
谱杀菌剂,中文通用名嘧菌酯,英文通用名Ax0x-白粉病、锈病、颖枯病、网斑病、霜霉病、稻瘟病等均
ystrobin,化学名称(E)2-[2-[6-(2-氰基苯氧基)嘧有良好的活性,其作用机制为抑制线粒体的呼吸作
啶4-基氧]苯基-3-甲氧基丙烯酸甲酯,具有杀菌谱用,破坏病菌的能量合成,非常适合在有害生物综合
广、活性高、持效期长、毒性低、对非靶标生物安全的治理(IPM)项目中整合运用?。目前以嘧菌酯为活
特点,是具有广阔应用前景的杀菌剂新品种农药。性成分的产品已经被43个国家批准用于30多种作
收稿日期:2012-09-28修改稿日期:2012-10-09
基金项目:安微高校省级自然科学研究项目(KJ2012Z243);安徽省高等学校省级食品科学与工程特色专业建设点资助
(20101091);安徽省食品科学与工程教学团队项目资助(20101094);蚌埠学院优秀人才资助项目(蚌埠学院字
20101107
作者简介:石亚中(1976-),男,安徽宿松人,蚌埠学院讲师,硕士,主要从事食品生物技术的研究。电话:1396069202
E-mail:stoney2008(@yahoo.cn