山东某典型石化企业土壤污染特征及健康风险评估  

Characterization of Soil Pollution and Health Risk Assessment in a Typical Petrochemical Enterprise in Shandong Province

作　　者：李桂全 沈兰霞 沈敬 LI Guiquan;SHEN Lanxia;SHEN Jing(Shandong Ruidi Environmental Assessment Technology Co.,Ltd.,Qingdao 266000,China;Dongying District People's Hospital,Dongying 257099,China;Qingdao Women and Children′s Hospital,Qingdao 266034,China)

机构地区：[1]山东瑞地环评科技有限公司,山东青岛266000 [2]东营市东营区人民医院,山东东营257099 [3]青岛市妇女儿童医院,山东青岛266034

出　　处：《环境影响评价》2024年第2期82-87,96,共7页Environmental Impact Assessment

摘　　要：为探究石化企业生产活动对土壤环境的影响,该文以山东某石化企业地块为研究对象,共采集土壤样品3435个,测定BTEX、PAHs和石油烃(C_(10)-C_(40))含量并对其健康风险进行风险评估,研究结果表明:地块中苯、乙苯、间/对二甲苯、苯并[a]芘、石油烃(C_(10)-C_(40))超过GB 36600中的一类用地筛选值。风险评估可知上述5种关注污染物对人体的健康风险不可接受,计算出土壤中苯的风险控制值为0.156 mg/kg,乙苯的风险控制值为0.56 mg/kg,间二甲苯的风险控制值为12.2 mg/kg,对二甲苯的风险控制值为12.3 mg/kg,石油烃(C_(10)-C_(40))的风险控制值为826 mg/kg。综合中第一类用地筛选值的相关说明,给出了该地块的建议修复目标值为:苯1 mg/kg、乙苯7.2 mg/kg、间对二甲苯163 mg/kg、石油烃(C_(10)-C_(40))826 mg/kg。To investigate the impact of petrochemical production activities on the soil environment,this study focused on a land parcel of a petrochemical company in Shandong.A total of 3435 soil samples were collected and analyzed for the concentrations of BTEX,PAHs,and petroleum hydrocarbons(C_(10)-C_(40)).Health risk assessments were conducted based on the results.The findings revealed that the concentrations of benzene,toluene,ortho-/para-xylene,benzo[a]pyrene,and petroleum hydrocarbons(C_(10)-C_(40))in the land parcel exceeded the screening values specified in<GB 36600>for Class I land.The risk assessment indicated that the health risks associated with the aforementioned five pollutants are unacceptable for human exposure.The calculated risk control values for soil were determined as follows:0.156 mg∕kg for benzene,0.56 mg∕kg for toluene,12.2 mg∕kg for m-xylene,12.3 mg∕kg for p-xylene,and 826 mg∕kg for petroleum hydrocarbons(C_(10)-C_(40)).Considering the relevant specifications provided in<GB 36600>for Class I land screening values,suggested remediation target values for the land parcel were proposed as follows:1 mg∕kg for benzene,7.2 mg∕kg for toluene,163 mg∕kg for m-/p-xylene,and 826 mg∕kg for petroleum hydrocarbons(C_(10)-C_(40)).

关 键 词：BTEX PAHS 石油烃(C10-C40) 泰森多边形法 筛选值 

分 类 号：X825[环境科学与工程—环境工程]