气候变化领域集成服务门户(CCPortal): 兰州市街道尘埃元素质量分数季节变化特征

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	兰州市街道尘埃元素质量分数季节变化特征
其他题名	Seasonal variation characteristics of element concentration of street dust in Lanzhou
	王冠; 夏敦胜; 杨丽萍; 陈发虎; 刘秀铭; 魏海涛
发表日期	2008
ISSN	0455-2059
卷号	44 期号:1 页码:2018-06-10
中文摘要	对不同季节采集的兰州市街道尘埃样品,用X射线荧光法分析了其中41种元素的质量分数,并用富集因子法对数据进行分析.结果表明：兰州市街道尘埃样品主要含有Si,Al,Ca,Fe,Na,Mg,K,S,Ti,Cl,P,Mn,Ba及少量Zn,Sr,Zr,Ce;基于对3个不同季节元素质量分数的对比,所测元素质量分数季节变化可分为4种类型：春高型、秋高型、冬高型和平均型.富集因子的计算结果显示Rb,V,Cu,Cr,Pb,La,Ni,Nd,As,Y,Sc,Ga,Co,Nb,Th等元素主要来源于土壤的贡献;Al,La,Ce,S,As等元素在采暖期质量分数显著增高,主要来源于燃煤;Ba,Pb,Cl源于汽车尾气;Zn源于工业污染.
英文摘要	Street dust samples were collected in Lanzhou and 41 elements were analysed by X-ray fluorescence. Meanwhile, enrichment factors were calculated for the source identification. Our study indicated that Si, Al, Ca, Fe, Na, Mg, K, S, Ti, Cl, P, Mn and Ba contribute to the primary composition in the street dust, with a small quantity of Zn, Sr, Zr, Ce. Based on the comparison of element concentrations in three seasons, four classes such as spring-high, autumn-high, winter-high and hypodispersion, were revealed. Enrichment factor calculation demonstrats that Rb, V, Cu, Cr, Pb, La, Ni, Nd, As, Y, Sc, Ga, Co, Nb, Th are generated by soil to a great extent, while Al, La, Ce, S and As are from coal burning and their concentrations are higher during the heating period. Zn comes from industrial pollution. And elements such as Ba, Pb, Cl are generally from vehicular exhausts.
关键词	街道尘埃化学元素富集因子季节变化兰州
英文关键词	street dust;chemistry element;enrichment factor;seasonal variation;Lanzhou
语种	中文
WOS研究方向	Environmental Sciences & Ecology
WOS类目	ENVIRONMENTAL SCIENCES
CSCD记录号	CSCD:3235895
来源期刊	兰州大学学报. 自然科学版
来源机构	兰州大学 ; 中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/1671
推荐引用方式 GB/T 7714	王冠,夏敦胜,杨丽萍,等. 兰州市街道尘埃元素质量分数季节变化特征[J]. 兰州大学, 中国科学院青藏高原研究所,2008,44(1):2018-06-10.
APA	王冠,夏敦胜,杨丽萍,陈发虎,刘秀铭,&魏海涛.(2008).兰州市街道尘埃元素质量分数季节变化特征.兰州大学学报. 自然科学版,44(1),2018-06-10.
MLA	王冠,et al."兰州市街道尘埃元素质量分数季节变化特征".兰州大学学报. 自然科学版 44.1(2008):2018-06-10.