浅谈GC-MS法分析土壤中苯胺

Discussion on the Analysis of Aniline in Soil by GC-MS

苯胺作为LARC第3类致癌物,对人体危害大,长期的低浓度接触可引起中毒性肝病,严重危害人体健康。应用现有分析标准,在酸性基体中土壤苯胺的测试回收率低。本文主要研究经氨水调节,在碱性体系中用1:1丙酮-二氯甲烷作为提取溶剂,经快速溶剂萃取仪ASE提取,提取液经净化、浓缩、定容后气相色谱-质谱GC-MS定性、定量分析土壤中的苯胺。结果显示,经过氨水调节使提取体系处于碱性条件下,有助于提高土壤中苯胺的回收率,酸性土壤苯胺的回收率由原来的40%提高到近80%。

Aniline,as the third carcinogen of LARC,is harmful to human body.Long-term low-concentration exposure can cause toxic liver disease and seriously endanger human health.Using the existing analytical standards,it is found that the recovery rate of soil aniline in acidic matrix is low.This paper mainly studies the qualitative and quantitative analysis of aniline in soil by GC-MS after adjusting with ammonia water,using 1:1 acetone-dichloromethane as extraction solvent in alkaline system,extracting with ASE by rapid solvent extractor,purifying,concentrating and constant volume.The results showed that adjusting the extraction system in alkaline condition by ammonia water was helpful to improve the recovery rate of aniline in soil,and the recovery rate of aniline in acidic soil increased from 40%to 80%.