唐山市曹妃甸地区大气降尘矿物学特征及环境意义--以华北理工大学校区为例  

Mineralogical characteristics of atmospheric dust and its environmental significance in Caofeidian area, Tangshan City: The campus of North China University of Science and Technology as an example

作　　者：王玲 束浩杰 王宏刚 陈博勋 郭紫璇 刘胜昌 刘淑贤 聂轶苗 WANG Ling;SHU Hao-jie;WANG Hong-gang;CHEN Bo-xun;GUO Zi-xuan;LIU Sheng-chang;LIU Shu-xian;NIE Yi-miao(Hebei Province Key Laboratory of Mining Exploitation and Security Technology,College of Mining Engineering,North China University of Science and Technology,Tangshan 063210,China;Tangshan Environmental Engineering Assessment Center,Tangshan 063000,China)

机构地区：[1]华北理工大学矿业工程学院,河北省矿业开发与安全技术重点实验室,河北唐山063210 [2]唐山市环境工程评估中心,河北唐山063000

出　　处：《岩石矿物学杂志》2023年第2期285-290,共6页Acta Petrologica et Mineralogica

基　　金：河北省自然科学基金项目(E2022209119)。

摘　　要：大气降尘矿物学特征研究具有重要的环境学意义。文章以华北理工大学校区采集样品为例,应用激光粒度分析仪、扫描电镜、X射线粉末衍射、电感耦合等离子体质谱等对河北省唐山市曹妃甸地区大气降尘矿物学特征进行了初步分析研究。结果表明,曹妃甸地区大气降尘粒径较粗,颗粒物包括块状、柱状、片状、球状及不规则粒状集合体,主要由石英、长石、石膏、云母、绿泥石、角闪石、白云石、方解石和赤铁矿等矿物组成;降尘样品中Cr、Cu、Zn、As、Cd、Pb等重金属元素含量均较高。研究分析表明,降尘样品中硅酸盐矿物主要源自地面扬尘,而石膏、方解石等碳酸盐矿物可能为环境中的次生矿物,样品中重金属污染主要来源于燃煤、工矿企业生产排放和少部分汽车尾气排放。It is of important environmental significance to study the mineralogical characteristics of atmospheric dust. Taking the samples collected from the campus of North China University of Science and Technology as an example, the mineralogical characteristics of atmospheric dust in Caofeidian area, Tangshan City, Hebei Province, were preliminarily analyzed and characterized by laser particle size analyzer, scanning electron microscope, X-ray powder diffraction and inductively coupled plasma mass spectrometry. The results show that the atmospheric dust is relatively coarse, and the particles include massive, columnar, flaky, spherical and irregular granular aggregates, which are mainly composed of quartz, feldspar, gypsum, mica, chlorite, hornblende, dolomite, calcite and hematite. The contents of heavy metal elements such as Cr, Cu, Zn, As, Cd, Pb in atmospheric dust samples are relatively high. The research and analysis show that silicate minerals in dust samples mainly come from fugitive dust, while carbonate minerals such as gypsum and calcite may be secondary minerals in the environment. The heavy metal in the samples mainly comes from coal combustion, the emissions of industrial enterprises and a small amount of automobile exhaust emissions.

关 键 词：大气降尘 矿物组成 化学成分 重金属 污染源 华北理工大学校区 

分 类 号：P575[天文地球—矿物学] P579[天文地球—地质学]