In this paper,a modified method of DSPE for the determination of 20 pesticide residues in tea was established.These pesticides were BHCs,DDTs,endosulfan,pyrethroid pesticides,acetochlor,fipronil,chlorfenapyr,which were concerned in the tea international trade.The pretreatment procedure was:(1) the target pesticide residues were extracted by 2 mL of pure acetonitrile in 0.5 g of tea,then vortexed by a vortexer vigorously for 2 min and centrifuged for 5 min at 5000 r/min;(2) 1 mL of supernate was mixed with P...
| 
推荐 
点击下列相关研究机构和相关文献作者，可以直接查到这些机构和作者被《中国知识资源总库》收录的其它文献，使您全面了解该机构和该作者的研究动态和历史。
