干旱区生态环境知识资源中心(Arid): 我国不同矿物气溶胶源区物质的物理化学特征

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	我国不同矿物气溶胶源区物质的物理化学特征
其他题名	Physical and Chemical Characters of Materials from Several Mineral Aerosol Sources in China
	刘昌岭 1; 张经 2; 刘素美 3
来源期刊	环境科学
ISSN	0250-3301
出版年	2002
卷号	23 期号:4 页码:28-32
中文摘要	在我国不同的矿物气溶胶源区进行采样分析的结果表明，源区气溶胶物质的物理化学特性相差很大。黄土的颗粒最细，91%的黄土颗粒可以形成矿物气溶胶进行长距离输送；沙土较粗，只有15%的沙尘颗粒可以形成矿物气溶胶；2个煤灰样品的粒径差异较大，抚顺煤灰中< 74mum的颗粒高达39%，而呼和浩特煤灰只有7%。不同粒径颗粒的化学分析结果表明，微量元素在细颗粒上有较高的富集。黄土与沙漠土壤的细颗粒的化学性质十分相似，同煤灰的化学性质完全不同，其常量元素与Al的比值（E/Al）十分接近，而且与深海沉积物粘土中的比值（E/Al）一致说明我国西北沙漠区及黄土区的矿物气溶胶可能是西北太平洋海底沉积物的重要来源。
英文摘要	Loess, sand and coal-ash samples were collected at several mineral aerosol sources to analyze the particle size as well as the major and trace elements. The results show that the physical and chemical characters were quite different between these samples. The Loess was mainly made up of small particle size that 91% of the sample could be transported as mineral aerosol to a long distance. The sand consists of relative large-size particles, with only 15% sample being formed into mineral aerosol. The coal-ash samples were quite different in particle sizes in the two regions, with 39% of particles < 74mum in Fushun samples while only 7% in Huhehaote samples. Chemical compositions varied significantly in different particle sizes, with trace elements obviously enriched in the least size. The elements to Al ratios (E/Al) were quite alike between the Loess and the sand, but very different from the coal ash. The similarity of the E/Al ratios between the Loess, the sand and the deep-sea clay suggest that the deserts and the Loess in the northwest China may be important sources for sediment of the northwest Pacific Ocean.
中文关键词	黄土 ; 沙土 ; 煤灰 ; 矿物气溶胶 ; 化学组成
英文关键词	loess sand coal ash mineral aerosol chemical composition
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:1009112
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203283
作者单位	1.青岛海洋地质研究所, 青岛, 山东 266071, 中国; 2.青岛海洋大学, 河口海岸研究所国家重点实验室, 青岛, 山东 266003, 中国; 3.青岛海洋大学, 青岛, 山东 266003, 中国
推荐引用方式 GB/T 7714	刘昌岭,张经,刘素美. 我国不同矿物气溶胶源区物质的物理化学特征[J],2002,23(4):28-32.
APA	刘昌岭,张经,&刘素美.(2002).我国不同矿物气溶胶源区物质的物理化学特征.环境科学,23(4),28-32.
MLA	刘昌岭,et al."我国不同矿物气溶胶源区物质的物理化学特征".环境科学 23.4(2002):28-32.