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、As2O3?SO3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.
Mineral composition of PM10 in Beijing was analyzed using X-ray diffraction technique (XRD) and scanning electron microscopy/energy-dispersive X-ray technique (SEM/EDX). Mineral composition of PM10 in Beijing existed obvious seasonal variety. The species of mineral were most in spring and least in autumn, and decreased to some extent in summer samples; but new species appear, such as NH4C1, K(NH4)Ca(SO4)2 · H2O, As2O3 · SO3. In Beijing PM10, the content of clay minerals was the highest, next was quartz, followed by calcite, feldspar, dolomite and other mineral particles; and still existed definite amount of complex particles. In the surfaces of these particles, these existed generally S, Cl elements.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2005年第2期129-132,共4页
China Environmental Science
基金
国家自然科学基金资助项目(40275040)
上海市启明星基金资助项目(03QB14017)
