摘要
在唐山市区对大气环境VOCs进行样品采集,对VOCs污染特征及臭氧生成潜势进行了分析。结果表明：唐山市区VOCs主要以烷烃和芳香烃为主,分别占VOCs总质量浓度的50.3%和30.4%。烷烃和烯烃以丁烷和丙烯等组分为主,芳香烃以苯、甲苯、乙苯和二甲苯为主。由于污染源排放强度、气象条件和光化学反应强弱的影响,VOCs浓度有明显的小时变化特征,8：00—10：00浓度最高,中午较低,且与早上相比,烯烃浓度降低比例中午最大。VOCs臭氧生成潜势敏感性组分以烯烃为主,占总VOCs臭氧生成潜势贡献的49.0%-66.8%,其主要敏感性种类为丙烯。
The samples collection of volatile organic compounds（ VOCs） was conducted in urban area of Tangshan. The VOCs characteristics and ozone generation potential（ OFP） were analyzed. The results indicated that alkanes and aromatics were the most abundant VOCs components in atmospheric environment in Tangshan,accounting for 50. 3% and 30. 4% of the total VOCs mass concentrations, respectively. Alkanes and alkenes were mainly composed of butane, propene, and other components. Aromatics were mainly composed of benzene,toluene,ethylbenzene and xylene. The hourly variation of VOCs was found,with the highest concentration occurring at 8： 00 to 10： 00 and lowest at 12： 00 to 14： 00. That was mainly due to the emission intensity of pollution sources,the influence of meteorological conditions and the strength of photochemical reaction. The proportion decrease of alkenes concentrations was highest at noon compared with that in the morning. The majority of OFP of VOCs species was alkenes,accounting for 49. 0% ~ 66. 8% of the total OFP of VOCs. The majority sensitivity species was propene.
出处
《环境工程》
CAS
CSCD
北大核心
2016年第6期130-135,共6页
Environmental Engineering
基金
中国环境管理干部学院基金项目"高盐废水短程脱氮的工艺控制策略及其微生物生态机理研究"(ZRZC201603)
关键词
挥发性有机物
空气质量
污染特征
臭氧生成潜势
唐山
volatile organic compounds
air quality
pollution characteristics
ozone generation potential
Tangshan
作者简介
丁洁然（1986-），女，硕士研究生，主要研究方向为环境污染控制。graceding1031@sina．Com
通信作者：景长勇（1980-），男，硕士研究生，副教授，主要研究方向为环境治理及节能减排技术。xiaodier99@163．Com
