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北京城区可吸入颗粒物(PM10的矿物学研究
引用本文:樊曙先,樊建凌,郑有飞,王正梅. 北京城区可吸入颗粒物(PM10的矿物学研究[J]. 中国环境科学, 2005, 25(2): 0-0
作者姓名:樊曙先  樊建凌  郑有飞  王正梅
作者单位:1. 南京信息工程大学,气象灾害与环境变化江苏省重点实验室,江苏,南京,210044
2. 中国科学院南京土壤研究所,江苏,南京,210008
基金项目:南京信息工程大学科研基金资助(QD08)
摘    要: 使用X射线衍射技术(XRD)和扫描电镜技术(SEM/EDX)对北京PM10中的矿物组分进行了分析.结果表明,北京PM10中的矿物组分存在明显的季节变化规律,春季PM10中的矿物组成种类最多;秋季PM10中的矿物种类最少;在夏季PM10中,矿物的种类有所减少,却有新的物种出现,如NH4Cl、K(NH4)Ca(SO4)2?H2O、As2O3SO3等.粘土矿物是北京PM10中含量最高的矿物,石英的含量次之,其他依次为方解石、石膏、长石、白云石以及其他矿物颗粒;北京PM10中还存在一定数量的复合颗粒,颗粒表面常有S、Cl元素的存在.

关 键 词:可吸入颗粒物(PM10矿物组分  X射线衍射技术(XRD)  扫描电镜(SEM/EDX)
文章编号:1000-6923(2005)02-0146-05
收稿时间:1900-01-01;
修稿时间:2004-07-01

Compared analysis of element content in atmospheric PM2.5 in Nanjing urban and suburban area
FAN Shu-xian,FAN Jian-ling,ZHENG You-fei,WANG Zheng-mei. Compared analysis of element content in atmospheric PM2.5 in Nanjing urban and suburban area[J]. China Environmental Science, 2005, 25(2): 0-0
Authors:FAN Shu-xian  FAN Jian-ling  ZHENG You-fei  WANG Zheng-mei
Affiliation:FAN Shu-xian1*,FAN Jian-ling2,ZHENG You-fei1,WANG Zheng-mei1
Abstract:The atmospheric fine particle (PM2.5) samples were collected from December 2002 to October 2003 in Nanjing urban and suburban areas respectively. The contents of 17 kinds of chemical elements were obtained with analysis using the XRF-9800 fluorescent analysis instrument. The elements in Nanjing atmospheric PM2.5 might be classified into two great kinds of the types of earth crust and pollution elements mainly. Studies the fractions of volume and mass and enrichment coefficients of different elements in PM2.5 discovered that in Nanjing the superstandard rate of PM2.5 was high, reaching 100%, exceeding the standard 0.62~1.83 times, in which 3 kinds of pollution elements S, Pb and Zn enriched markedly, with S element the most obvious and average enrichment coefficient reaching 6059.1 in the urban area of Nanjing, and 1120.2 in the suburban area, showing that the atmospheric air pollution in Nanjing was characterized by the SOx of coal smoke type.
Keywords:Nanjing  PM2.5  element content  enrichment coefficient
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