泥浆池周边土壤重金属分布及潜在生态危害  

Distribution and Potential Ecological Risk of Heavy Metals in Soil Around Mud Pit

作　　者：霍小鹏[1,2] 唐春凌[1,2] 罗小兰[1,2] 王政[1,2] 熊朝刚 李斌[1,2] 

机构地区：[1]四川天宇石油环保安全技术咨询服务有限公司 [2]中国石油西南油气田分公司安全环保与技术监督研究院

出　　处：《油气田环境保护》2016年第2期41-43,62,共3页Environmental Protection of Oil & Gas Fields

基　　金：国家重点基础研究发展计划项目(2013CB228006);中国石油天然气股份有限公司重大科技专项(2012F-4701)

摘　　要：以某地区气田5座井场泥浆池周边耕地土壤为研究对象，分析耕作层（0～20cm）氯化物、砷、钡、铬、铜、铅含量，并以该省土壤背景值为参比，采用Hakanson潜在生态危害指数法评价井场泥浆池周边耕地土壤潜在生态风险。结果表明：通过与对照土壤中砷、铬、铜、铅含量对比分析，5座井场泥浆池周边耕地土壤中砷、铬、铜、铅4种重金属潜在生态危害指数小于150，为轻微生态危害程度，说明井场泥浆池周边耕作层土壤并未受到天然气钻井作业污染影响。井场泥浆池周边土壤重金属主要来源于成土母质。Soil sample fromplough layer were collected in 5 wellsite mud-pits of a certain gasfield.Concentration of 6 kinds of soil index(chloride,As,Ba,Cr,Cu,Pb)were measured,and then the potential ecological hazard assessment indices by Hakanson was used to assess the soil heavy metals potential ecological risk degree around mut pit,compared with the background values of soil in the same province.The results showed that by comparing the control soil indexes the plough layer soil around mud pit was not polluted by natural gas drilling operation.The situation of soil heavy metals around mut pit was in the slight ecological risk level in mut pits based on potential ecological risk assessment,and each of the ecological hazard assessment index of As,Cr,Cu,Pb was in a slight risk level.The soil heavy metals around mut pit were probably from original soil materials.

关 键 词：泥浆池 土壤 重金属 潜在生态风险 

分 类 号：X53[环境科学与工程—环境工程] X741