广西贺州莲塘镇周边地下水铊异常浅析  

Analysis of Thallium Anomaly in Groundwater Around Liantang Town,Hezhou,Guangxi

作　　者：夏杰[1] 胡俊良[1] 李堃[1] 赵武强[1] 刘飞[1] 张鲲[1] 程顺波[1] 崔森[1] 刘冰 XIA Jie;HU Jun-Liang;LI Kun;ZHAO Wu-Qiang;LIU Fei;ZHANG Kun;CHENG Shun-Bo;CUI Sen;LIU Bing(Wuhan Center of China Geological Survery,Wuhan 430205;Geological Exploration Institute of Shandong Zhengyuan,Jinan 250101)

机构地区：[1]中国地质调查局武汉地质调查中心,武汉430205 [2]中国冶金地质总局山东正元地质勘查院,济南250101

出　　处：《华南地质》2020年第3期263-269,共7页South China Geology

基　　金：中国地质调查局项目“广西贺州-梧州地区综合地质调查”(编号:DD20190826);“南岭成矿带大义山-骑田岭锡矿地质调查”(编号:DD20190154)联合资助。

摘　　要：贺州地区马尾河流域矿业活动发达,是铊污染易发源头区。选取马尾河下游区域作为重点研究区,通过采集机井、泉点水样开展重金属污染调查,分析地下水铊污染机理。分析结果表明:研究区地下水存在重金属铊、镉污染,Tl元素含量超标的地下水有3处,超标率18.5%,Cd元素含量超标的地下水1处。地下水重金属铊污染主要分布于莲塘镇、佛冲一带谷地,其中马尾河两岸地下水中的重金属Tl污染最严重,Tl元素超标3.0-9倍。同时采集了地表水样进行对比,研究表明区内地下水中的Tl污染与鹿寨组、榴江组中的铊元素高背景关系密切。The area of Mawei River in Hezhou has developed mining activities and it is the source area of thallium pollution.Therefore,the lower Mawei River region is selected as the key research area.The heavy metal pollution was investigated by collecting underground water samples from the wells and spings,The mechanism of thallium contamination of groundwater was analyzed.It was found that the groundwater in the study area was polluted by heavy metals such as thallium and cadmium.Thallium pollution is mainly distributed in fochong valley of Liantang town and Fochong area.There were three groundwater with thallium element content exceeded the standard,with the exceeded rate of 18.5%.There were one groundwater with cadmium element content exceeded the standard,among them,the heavy metal Tl in groundwater along mawei River was the most seriously polluted,with Tl element exceeding the standard by 3.0-9 times,surface water samples were also collected for comparison.The research shows that Tl pollution is closely related to the high background of thallium in the luzhai formation and Liujiang Formation.

关 键 词：贺州 马尾河 鹿寨组 榴江组 地下水 重金属污染 铊 

分 类 号：P595[天文地球—地球化学]