内蒙古乌达矿区土壤多环芳烃空间分布特征及分析  

Distribution Characteristics of Soil PAHs in Wuda Mining Area, Inner Mongolia

作　　者：袁珂月 钱雅慧 许丹丹 梁汉东[1,2] YUAN Keyue;QIAN Yahui;XU Dandan;LIANG Handong(State Key Laboratory of Coal Resources and Safe Mining,Beijing 100083,China;School of Geoseience and Surveying Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]煤炭资源与安全开采国家重点实验室,北京100083 [2]中国矿业大学(北京)地球科学与测绘工程学院,北京100083

出　　处：《地球与环境》2022年第5期698-707,共10页Earth and Environment

基　　金：国家自然科学基金(41772157);煤炭资源与安全开采国家重点实验室自主研究课题(SKLCRSM19ZZ03)。

摘　　要：随着我国煤炭行业的不断发展,有关煤矿区及周边有机污染物研究正逐渐受到全社会广泛关注。本文利用气相色谱-质谱方法对内蒙古乌达矿区不同土地利用类型的土壤样品中多环芳烃含量和空间分布情况进行分析。结果表明,研究区土壤中8种多环芳烃的总含量均值为2 054 ng/g。尤其发现,土壤样品中烷基多环芳烃含量显著高于母体多环芳烃。从空间分布上来看,多环芳烃含量较高的位置集中在研究区西南方位,以8号水泥厂采样点和9号工业园采样点为中心分布。相关性分析表明,土壤中母体多环芳烃和烷基取代多环芳烃相关性较好,且环数越高,相关性越强,而多环芳烃与重金属汞并不存在明显的相关性。研究乌达矿区土壤中多环芳烃的污染情况和空间分布特征,分析煤矿开采及煤火问题对周边环境的影响,以期为煤矿区周围环境治理提供参考。With the continuous development of China′s coal industry, the environmental problems in coal mining areas and their surrounding areas have gradually emerged and attracted attention. In this paper, the content and spatial distribution of polycyclic aromatic hydrocarbons(PAHs) in representative soil samples of different land use types in Wuda mining area, Inner Mongolia were analyzed by gas chromatography-mass spectrometry. The results showed that the average value of the total contents of eight PAHs in the soil was 2 054 ng/g. In particular, the content of alkyl PAHs in soil samples was significantly higher than that of parent PAHs. From the perspective of spatial distribution, the higher PAHs content was concentrated in the southwest of the study area, centered around the sampling point of No.8 Cement Plant and No.9 Industrial Park. Correlation analysis showed that there was a significant relationship between parent PAHs and alkyl PAHs in soil, and the higher the number of rings, the stronger the correlation was. However, there was no clear correlation between PAHs and mercury. This paper studies the pollution and spatial distribution characteristics of PAHs in soil of Wuda mining area, and analyzes the influence of coal mining and coal fire on the surrounding environment, in order to provide reference for the surrounding environmental governance of coal mining area.

关 键 词：煤矿区 土壤 多环芳烃 空间分布 相关性分析 

分 类 号：X53[环境科学与工程—环境工程]