摘要
为研究典型煤化气场地土壤多环芳烃污染现状,选取生产历史近30年的典型煤化气场地作为研究对象,通过对特征污染物苯并[a]芘的监测,探讨了其生产历史对土壤污染的影响。结果表明:该场地土壤苯并[a]芘样品检出率为24.89%,最大超标倍数为89.78倍,超出管制值的有37件样品,场地内土壤苯并[a]芘污染处于中—重度的水平,对人体健康存在不可接受风险,应当采取风险管控或修复措施。通过煤化气场地污染特征分析,土壤苯并[a]芘的空间分布与生产活动、污染物排放源密切相关,呈现出以生产区为中心,向周边逐渐降低的趋势。影响污染分布的因素主要为生产工艺与管理,气象条件以及土壤性质。
To study the current status of polycyclic aromatic hydrocarbon(PAH)pollution in typical coal gasification sites,a site with a production history of nearly 30 years was selected as the research object.By monitoring the characteristic pollutant benzo[a]pyrene,the impact of production history on soil pollution was explored.The results showed that the detection rate of benzo[a]pyrene in the soil samples of this site was 24.89%,with the maximum exceedance factor reaching 89.78 times.There were 37 samples exceeding the control value.The benzo[a]pyrene pollution in the soil of this site was at a medium to severe level,usually posing an unacceptable risk to human health,and risk control or remediation measures should be taken.Through the analysis of the pollution characteristics of the coal gasification site,the spatial distribution of benzo[a]pyrene in the soil was closely related to production activities and pollutant emission sources,showing a trend of gradually decreasing from the production areas to the surrounding areas.The main factors affecting the distribution of pollution were production processes and management,meteorological conditions,and soil properties.
作者
宣斌
姜文达
李广兵
杜欢
李宝铸
向金
Xuan Bin;Jiang Wenda;Li Guangbing;Du Huan;Li Baozhu;Xiang Jin(Anhui Liye Ecological Technology Co.,Ltd.,Hefei 230093,Anhui,China)
出处
《绿色科技》
2025年第6期180-184,共5页
Journal of Green Science and Technology
关键词
煤化气场地
苯并[A]芘
土壤污染
分布特征
coal gas sites
benzo[a]pyrene
soil pollution
distribution characteristics
