摘要
为研究天津市工业区大气环境中苯系物的污染特征,选取大港石化工业区、汉沽化工园区和塘沽经济开发区共14个监测点位于春、夏、秋季分别采集环境空气样品,并利用三级冷阱预浓缩/GC-MS方法进行分析。结果表明:苯、甲苯、乙苯等典型苯系物检出率均高于90%,甲苯平均浓度最高,苯次之,乙苯最低;污染程度与不同季节的气候变化密切关联,春季污染较为严重,秋季次之,夏季污染较轻;苯系物浓度最大测定值远远低于我国《工业企业设计卫生标准》(TJ36-79)中规定的最高容许浓度,塘沽污染程度略高于大港、汉沽较轻。
To study the pollution characteristics of BETX points were distributed in Dagang Petrochemical Park, in the ambient air of Tianjin Industrial Zone, 14 sampling Hangu Chemical Industrial Park and Tanggu Economic Development Zone. Systematic sampling and analyses by three-grade cold trap/GC-MS were carried out in spring, summer and autumn, respectively. The results showed that detection rates of typical BETX as benzene, methylbenzene and ethylbenzene were over 90%. The average concentration of methylbenzene was the highest and then benzene, while ethylbenzene was the lowest. The pollution level was related to the climatic variation between seasons. The pollution was the highest in spring, and the lowest in summer. But the maximum BETX concentration was far below the hygienic standards for the design of industrial enterprises. The pollution level in Tanggu was slightly higher than in Dagang, and the lowest in Hangu
出处
《城市环境与城市生态》
CAS
2015年第3期9-11,共3页
Urban Environment & Urban Ecology
关键词
工业区
环境空气
苯系物
污染特征
industrial zone
ambient air
BETX
pollution characterization
