贵州某煤矿煤矸石重金属形态分析及风险评价  

Speciation Analysis and Risk Assessment of Heavy Metals in Coal Gangue from Jinshalonggong No.2 Well in Bijie City

作　　者：李世瑀 何新宇 杨喻 杨紫娟 杨佳馨 左祝 刘红 Li Shiyu;He Xinyu;Yang Yu;Yang Zijuan;Yang Jiaxin;Zuo Zhu;Liu Hong(Experimental Teaching Center of Chemistry and Chemical Engineering,Guizhou Institute of Engineering and Technology,Bijie 551700,China;Guizhou Provincial Key Laboratory of Applied Chemistry,Bijie 551700,China)

机构地区：[1]贵州工程应用技术学院化学化工实验教学中心,贵州毕节551700 [2]贵州省应用化学特色重点实验室,贵州毕节551700

出　　处：《山东化工》2022年第1期243-245,253,共4页Shandong Chemical Industry

基　　金：国家级大学生创新创业项目(202010668063)。

摘　　要：对贵州某煤矿煤矸石作为研究对象,采用了BCR逐级提取法提取该物质中重金属以及对其重金属形态分布进行测定;建立ICP-AES法及AFS法对其中Zn、Cd、Ni、Cr、Cu、Hg、As等重金属形态进行分析,并利用潜在风险指数法评价重金属生态风险。煤矸石中Cu的还原态、Cd和Ni的氧化态易对环境造成危害。且该煤矿中重金属Cd的Ei r为106.50,其生态污染风险较高;其他重金属潜在风险为中等,故该地区周边潜在生态危险较高,污染风险较大。This paper studies the gangue of a coal mine in Guizhou,and the heavy metals in the material were extracted by BCR step-by-step extraction method and the speciation distribution of heavy metals were measured.CP-AES and AFS methods were established to analyze the form of Zn,Cd,Ni,Cr,Cu,Hg,As and other heavy metals,and evaluate the ecological risk by potential risk index method.The reduction of Cu and oxidation of Cd and Ni in gangue are harmful to the environment.Moreover,the Ei r of heavy metal Cd in the coal mine is 106.50,with high risk of ecological pollution;the potential risk of other heavy metals is medium,so the potential ecological risk around the area is high and the pollution risk is high.

关 键 词：煤矸石 BCR法 重金属形态 潜在风险指数法 

分 类 号：TQ533[化学工程—煤化学工程]