摘要
为揭示江西赣州地区脐橙中农药残留现状及其地理分布特征,2014年11月在江西赣州18个区县的110个乡镇共采集788份脐橙鲜果样品,采用QuEChERS技术结合GC/MS-MS和HPLC-MS/MS测定样品果肉中166种农药残留,并随机抽取25份样品对比分析果肉和果皮的农药残留。结果表明:(1)样品果肉中共检出18种农药,其中,啶虫脒、多菌灵、咪鲜胺、杀扑磷、甲基硫菌灵、氧乐果等检出率较高;(2)寻乌、龙南、赣县和石城的样品中农药检出率很高,阳性样品达到60%以上,兴国和上犹的检出率很低;(3)果肉和果皮的农药残留状况存在差异;(4)赣州脐橙整体比较安全,仅有7份样品的果肉出现农药(氧乐果)残留量超过国家标准(GB 2763—2014)的限量要求,占检测样品总数的0.89%。
To determine current levels of pesticide residues and their distribution characteristics in the navel orange fruits in Ganzhou region, the residues of 166 pesticides were detected by QuEChERS combined with GC/MS-MS and HPLC-MS/MS in 788 navel orange samples collected from 110 towns of 18 districts and counties in Ganzhou region of Jiangxi province. Results showed that 18 pesticides were found. Among them, the acetamipri, carbendazim, prochloraz, methidathi- on, thiophanate-methyl and omethoate had higher detection rates. Pesticides residues were frequently detected in the samples from the regions of Xunwu, Lonlan, Ganxian and Shicheng, with the ratio higher than 60%. Meanwhile, the pesticides residues were seldom detected in samples collected from Xingguo and Shangyou. The distribution of pesticide residues was different between the pulp and peel from the same navel orange samples. In addition, according to national standard of GB 2763--2014, only omethoate residues in 7 samples exceeded the MRL, accounting for 0. 8 percent of the samples.
出处
《中国南方果树》
北大核心
2016年第3期15-20,共6页
South China Fruits
基金
国家质检公益性行业科研专项项目(201410080)资助
关键词
脐橙
农药
残留
分布特征
navel orange
pesticide
residue
distribution characteristics
