欢迎访问《环境监测管理与技术》编辑部网站！

文章摘要

潘集矿区土壤中PAHs分布与源解析及细菌群落相关性研究

Distribution，Source Apportionment and Correlation with Bacterial Communities of PAHs in Soils from Panji Mining Area

DOI：

中文关键词: 多环芳烃细菌群落分布特征来源解析生态风险矿区土壤

英文关键词: PAHs Bacterial community Distribution characteristics Source apportionment Ecological risk Soil in the mining area

基金项目:国家自然科学基金资助项目（42072201）；安徽省高校协同创新基金资助项目（GXXT-2021-017）

作者	单位
张梦云	安徽大学资源与环境工程学院,安徽省矿山生态修复工程研究中心
郑刘根	安徽大学资源与环境工程学院,安徽省矿山生态修复工程研究中心
陈星	安徽建筑大学环境与能源工程学院
陈永春	深部煤炭安全开采与环境保护全国重点实验室
李兵	深部煤炭安全开采与环境保护全国重点实验室
陶鹏飞	深部煤炭安全开采与环境保护全国重点实验室

摘要点击次数: 880

全文下载次数: 89

中文摘要:

以潘集矿区土壤为研究对象，布设30个采样点，采用正定矩阵因子分解（PMF）模型法解析矿区土壤PAHs的分布特征和污染来源，利用毒性当量（TEQ）法和超额终生癌症风险（ELCR）模型对矿区土壤进行生态风险评价，结合高通量测序分析结果，探讨PAHs污染土壤中细菌群落特征。结果表明，研究区不同区域PAHs污染水平存在明显差异，土壤中ΣPAHs测定值在1435 ng/g～1 94151 ng/g之间，均值为52745 ng/g，表现为轻度富集；土壤中PAHs的污染来源主要为煤化工源、燃煤交通混合源、石油源和煤炭及生物质燃烧源，平均贡献率分别为 3910%、2842%、2170%和1078%；土壤中PAHs的平均TEQBaP为6980 ng/g，ELCR值均＞10-4，其生态风险需要重点关注；土壤中细菌群落具有明显的区域分异性，变形菌门、酸杆菌门和放线菌门占主导地位，土壤细菌群落特征是土壤理化因子与PAHs共同作用的结果。

英文摘要:

Taking the soil from Panji mining area as the research object，30 sampling sites were set up，the distribution characteristics and pollution sources of PAHs in soils from the mining area were analyzed by using the positive matrix factorization（PMF） model. The ecological risk of the soil was assessed by the toxic equivalency（TEQ） method and the excess lifetime cancer risk（ELCR） model. Based on the results of high throughput sequencing analysis，the characteristics of bacterial communities in PAH contaminated soil were investigated. The results indicated that there were significant differences in PAHs pollution levels across different regions of the study area. The measured concentrations of ΣPAHs in the soil ranged from 1435 ng/g to 1 94151 ng/g，with an average of 52745 ng/g，showing a mild enrichment. The pollution sources of PAHs in the soil were mainly coal chemical industry source，coal combustion and traffic mixed source，petroleum source，coal and biomass combustion source，with average contribution rates of 3910%，2842%，2170%，and 1078%，respectively. The average toxic equivalency（TEQBaP） of PAHsin the soil was 6980 ng/g，and the ELCR were all greater than 10-4，indicating that the ecological risk required close attention. The bacterial communities in the soil exhibited obvious regional differentia tion，with Pseudomonadota，Acidobacteriota and Actinobacteriota being dominant. The characteristics of bacterial communities were the result of the combined effects of soil physicochemical properties and PAHs.

查看全文查看/发表评论下载PDF阅读器

关闭