期刊论文

Residues behavior and dietary intake risk assessment of malathion in asparagus lettuce

中文

植物保护

0529-1542

2018

44

5

231-237,246

10.16688/j.zwbh.2018013

国家重点研发计划(2016YFD0201200) 湖南省自然科学基金青年基金(2017JJ3165) 湖南省研究生科研创新项目(CX2017B351)

本校为第一机构

2016年于湖南、山东等六地进行了马拉硫磷在莴笋中的规范性残留试验,建立了气相色谱-火焰光度检测器(GC-FPD)测定马拉硫磷在莴笋样品中的残留分析方法,并对我国各类人群的膳食摄入风险进行了评估。样品采用乙腈提取,丙酮置换净化、GC-FPD检测,结果表明:当马拉硫磷在莴笋全株、茎和叶中的添加浓度为0.02~8.0 mg/kg时,其回收率在83%~108%之间,相对标准偏差(RSD)在1%~6%之间;马拉硫磷的最小检出量(LOD)为1.0×10~(-11)g,定量限(LOQ)均为0.02 mg/kg。湖南和山东莴笋全株中马拉硫磷的消解动态试验结果显示,马拉硫磷的半衰期为1.75~2.27 d,属于易降解农药;六地的最终残留试验结果表明,最后一次施用马拉...

The normative residual trials of malathion in asparagus lettuce were carried out in 6 provinces in 2016. A new method for the residue determination of malathion in asparagus lettuce was developed by using gas chromatography equipped with flame photometric detector (GC-FPD). The dietary intake risk assessment to different populations was investigated based on data for malathion residues in asparagus lettuce. The asparagus lettuce was extracted with acetonitrile, cleaned up by acetone displacement and determined by GC-FPD. Under the fortified lev...