煤焦油沥青污染特性分析研究  

Study on the Pollution Characteristics of Coal Tar Pitch

作　　者：王小娜[1,2] 黄相国 邢峰[1,2] 许增贵 刘博[1,2] 刘光聪 卞思思[1,2] WANG Xiaona;HUANG Xiangguou;XING Feng;XU Zenggui;LIU Bo;LIU Guangcong;BIAN Sisi(Shenyang Academy of Environmental Sciences,Shenyang 110167,China;Liaoning Provincial Key Laboratory for Urban Ecology,Shenyang 110167,China)

机构地区：[1]沈阳环境科学研究院,辽宁沈阳110167 [2]辽宁省城市生态重点实验室,辽宁沈阳110167

出　　处：《环境保护科学》2020年第2期123-126,共4页Environmental Protection Science

基　　金：国家环境保护标准项目(2014-11)。

摘　　要：以山西某煤焦油深加工企业产生的煤焦油沥青为研究对象,采用气相-质谱联用仪分析美国环保局列出的优先控制的16种多环芳烃,讨论了多环芳烃的组分、环数分布及等效致癌毒性等。采用BCR连续提取方法,分析了重金属的形态分布特征。结果表明,煤沥青中16种多环芳烃主要以低环(2~3环)和中环(4环)为主,高致突变性物质、致癌性物质总含量均超过国家标准规定的限值;煤沥青的总BaP等效毒性浓度为2746.46 mg/kg,高于煤焦油之外的其他煤化工残渣,具有潜在致癌性;煤焦油沥青中重金属含量大小排序为Pb>Cr>Zn>Ni>Cu>Cd>Se;Pb、Cd的残渣态略占优势,Cu和Cr的氧化态含量略高,Ni的还原态含量最高,Zn的氧化态最高。The coal tar pitch from a coal tar enterprise in Shanxi province was selected as the research object.16 priority PAH pollutants listed by US EPA were analyzed through GC-MS.The composition and the ring distribution as well as the BEQ of these PAHs were investigated.The morphology distribution of heavy metals was analyzed through the BCR sequential extraction procedure.The results showed that,16 priority PAH pollutants from the coal tar pitch were mainly composed of lower rings(2~3 rings)and middle ring(4 rings).The total contents of the mutagenic and carcinogenic compounds exceeded the national standard limit.The∑BEQ of the coal tar pitch was 2746.46 mg/kg that exceeded the other residues except the coal tar,and the coal tar pitch was potentially carcinogenic.The heavy metals of the coal tar pitch with the content from high to low were Pb,Cr,Zn,Ni,Cu,Cd,Se.Pb and Cd with residual fractions as well as the oxide-bound content of Cu and Cr were slightly higher than the other fractions.The reduced state content of Ni was the highest,while the oxide-bound content of Zn was the highest.

关 键 词：煤沥青 煤焦油 多环芳烃 重金属 等效致癌毒性 

分 类 号：X784[环境科学与工程—环境工程]