某有机磷农药场地异味VOCs污染特征与关键致臭物质识别  

Odour VOCs pollution characteristics and identification of key odorant in an organophosphorus pesticide site

作　　者：李佳音 李伟芳 宁晓宇 孟洁 肖咸德 商细彬 崔焕文 邹克华 LI Jiayin;LI Weifang;NING Xiaoyu;MENG Jie;XIAO Xiande;SHANG Xibin;CUI Huanwen;ZOU Kehua(Tianjin Sinodour Environmental Technology Co.,Ltd,Tianjin,300191,China;Tianjin Academy of Ecological and Environmental Science,State Environmental Protection Key Laboratory of Odour Pollution Control,Tianjin,300191,China)

机构地区：[1]天津迪兰奥特环保科技开发有限公司,天津300191 [2]天津市生态环境科学研究院,国家环境保护恶臭污染控制重点实验室,天津300191

出　　处：《环境化学》2022年第9期3075-3082,共8页Environmental Chemistry

基　　金：国家重点研发计划(2019YFC1806100)资助。

摘　　要：为了解有机磷农药场地修复过程中异味污染特征及产生原因,对某有机磷农药场地开展系统的场地调查.感官评估不同功能区异味污染情况,分析各区域异味VOCs组分差别,识别主要异味VOCs物质,确定各区域的关键致臭物质.结果表明,该有机磷农药场地生产区与辅助区异味污染最严重,臭气浓度、臭气强度以及TVOCs浓度水平均高于其他区域,公共区与敏感点异味污染最轻.场地主要异味VOCs组分为氯代烃以及苯及苯系物,其中氯苯、苯、二苯醚以及四氯化碳等占比较高.敏感点主要异味VOCs组分为烷烯烃与醛酮类,其中异戊烷、甲基叔丁基醚、正戊烷以及三氯甲烷等物质占比较高.各区域关键致臭物质不同,生产区关键致臭物质为辛醛与乙醛,辅助区为乙醛与乙醇,公共区为乙酸仲丁酯,厂界处为辛醛,敏感点为甲硫醚.In order to understand the characteristics and causes of odor pollution during pesticide site remediation, a systematic site survey was carried out on an organophosphorus pesticide site. This investigation includes odor sensory evaluation in different functional areas, analysis of the differences of odorous VOCs components in each area, identification of the main odorous VOCs substances, and determining the key odorants of each area. Results showed that odor pollution of the production area and auxiliary area were the most serious. And the odor concentration, odor intensity and TVOCs concentration level were higher than other areas. The public area and sensitive point had the least odor pollution. The main odor VOCs components of the site were chlorinated hydrocarbons and benzene and benzene series, of which chlorobenzene, benzene, diphenyl ether and carbon tetrachloride were higher in content. The main components of odor VOCs at sensitive points were alkanes and aldehydes, of which isopentane, methyl tert-butyl ether, n-pentane and chloroform had a higher content. The key odorants of each area were different. The key odorants of the production area were octyl aldehyde and acetaldehyde, the auxiliary area were acetaldehyde and ethanol, the public area was sec-butyl acetate, the plant boundary was octyl aldehyde, and the sensitive point was dimethyl sulfide.

关 键 词：有机磷农药场地 异味挥发性有机物 污染特征 感官评估 关键致臭物质 

分 类 号：X53[环境科学与工程—环境工程]