摘要
运用瓦里安直接进样技术，分析土壤中的滴滴涕农药残留。将风干过筛的待测土壤样品在平衡室里陈化一定时间，取适量的土壤样品放入专门的微型进样瓶，送入气相色谱。利用进样口高温使得样品解吸进入色谱柱，平行样品测定的相对误差为1．58％，RSD为2．73％。最低检测限0．039μg／kg，外标法进行定量确定DDT的含量，加标回收率80％-105％之间。
This paper studies, a new analytical method for the pesticide residue in soil sample. This method is based on a novel direct sample introduction instrument called ChrematProbe that enables extraction of free soil sample into GC. The authors keep the soil sample in the balancing chamber for some time, then put the sample into the tiny sample bottle which was sent into the GC and obtained the quantity of DDT in the soil
出处
《盐城工学院学报（自然科学版）》
CAS
2006年第2期46-47,50,共3页
Journal of Yancheng Institute of Technology:Natural Science Edition
关键词
农药残留
气相色谱
土壤直接进样
pesticide residues
GC
soil Direct Sample Introduction
