大气中有机污染物气-液采样技术初探  

A study of technology of gas-liquid trapping for organic pollutants in the atmosphere

作　　者：唐保坤[1] 冯启路[1] 吕霜[1] 

机构地区：[1]平顶山工业职业技术学院化工系,河南平顶山467001

出　　处：《中南林业科技大学学报》2011年第2期127-130,共4页Journal of Central South University of Forestry & Technology

摘　　要：开发探讨了大气中有机污染物气-液采样技术,并以六种多环芳烃(6-PAHs)为有机污染物的代表物对该技术进行了可行性和模拟采样的研究。结果表明该采样技术以二氯甲烷为吸收溶剂,在常见的温度范围内,气体流速在2000～5000 mL/min内,对气态的6-PAHs(苊、芴、菲、芘、苯并(a)芘、苯并(ghj)苝)的回收率达90%±10%。该技术与传统的利用聚氨酯泡沫或XAD类树脂吸附有机污染物气体相比,具有装置结构简单,材料价格低廉,采集过程和样品的后处理步骤简便等特点。A technology of gas liquid trapping of organic pollutants in the atmosphere was studied, and the feasibility of the technology was evaluated by taking gaseous 6-PAHs as the representive of the organic pollutants, and did some simulated exam of the technology. The results show that the trapping efficiency of gaseous 6-PAHs was 90% --10 %, the experimental conditions were： adsorbent of dichloromethane, the absorbing device in the usual tem perature, 2000--5000 mL/min of flow rate. The technology is simpler and cheaper than traditional, and the trap ping process and the late treatment steps are simply.

关 键 词：气-液采样技术 大气中有机污染物 6 PAHS 回收率 

分 类 号：X502[环境科学与工程—环境工程]