城市污染源周边溴代二噁英分布特征研究  

Distribution Characteristics of Brominated Dioxins Surrounding Urban Pollution Sources

作　　者：邓芸芸[1] 贾丽娟[1] 沈晓瑜 杨品川 毛婉莲 DENG Yunyun;JIA Lijuan;SHEN Xiaoyu;YANG Pinchuan;MAO Wanlian(Shanghai Academy of Public Measurement,Shanghai 201203,China)

机构地区：[1]上海市检测中心,上海201203

出　　处：《环境科学与技术》2024年第8期107-112,共6页Environmental Science & Technology

摘　　要：为了解城市污染源周边溴代二噁英类化合物(PBDD/Fs)的污染状况,文章选取上海市区的生活垃圾焚烧炉周边场地作为研究区域,采集夏、冬两季32个环境大气样品和61个土壤样品,研究城市污染源周边环境大气和土壤中PBDD/Fs的含量以及时空分布特征。结果表明,城市污染源周边大气中PBDD/Fs的浓度范围为13.8~115 fg/m^(3)(以毒性学量计,下同),平均值为44.3 fg/m^(3),冬季大气中PBDD/Fs浓度略高于夏季;土壤样品中PBDD/Fs的浓度范围为0.561~15.9 pg/g,平均值为3.66 pg/g,不同风向间PBDD/Fs浓度无显著差异;城市污染源周边环境大气中PBDD/Fs含量明显小于氯代二噁英的含量,而土壤中含量相当,甚至更高;城市污染源分析显示,研究区域环境大气和土壤中PBDD/Fs主要来源于商业十溴阻燃剂的使用与处置,以及电子垃圾中的溴代阻燃剂。In order to make clear the distribution characteristics of brominated dioxin compounds(PBDD/Fs)in the vicinity of the pollution sources of urban areas in Shanghai,a research was undertaken in the site nearby a municipal solid-waste incin⁃erator,where 32 ambient air samples and 61 soil samples were collected during summer and winter,and then the content of PBDD/Fs in soil and ambient air samples was analyzed,and the spatio-temporal distribution around the pollution source was studied.The results showed that the concentrations of PBDD/Fs in the ambient atmosphere around the pollution source ranged from 13.8 to 115 fg/m^(3),with an average value of 44.3 fg/m^(3).In winter season,PBDD/Fs concentration was a little more high⁃er than in summer season.The TEQ concentration of PBDD/Fs in soil samples around a urban pollution source ranged from 0.561 to 15.9 pg/g,with an average value of 3.66 pg/g,and the difference of PBDD/Fs concentrations in different wind direc⁃tions was statistically meaningless;and the concentration of PBDD/Fs in the ambient atmosphere around the pollution source was much lower than that of chlorinated dioxins,but in the soil,PBDD/Fs concentration was comparable to or even higher than that of chlorinated dioxins.In addition,the analysis of pollution sources indicated that PBDD/Fs pollutants in the ambient atmosphere and soil of the study area were mainly attributed to the use and disposal of commercial decabrominated flame retardants,as well as brominated flame retardants in electronic waste.

关 键 词：城市污染源 环境大气 土壤 PBDD/Fs 来源解析 

分 类 号：X51[环境科学与工程—环境工程]