Arid
DOI10.1007/s11869-011-0142-7
A method for dry extracting large volumes of fine particulate matter from bulk soil samples
Goossens, Dirk1,2
通讯作者Goossens, Dirk
来源期刊AIR QUALITY ATMOSPHERE AND HEALTH
ISSN1873-9318
出版年2012
卷号5期号:4页码:425-431
英文摘要

A significant part of ambient dust consists of fine particles derived from natural soils. Because many toxic constituents are concentrated in the smallest particle fractions, and because these small particulates are the most easily inhaled, the fine-particle fraction of soil (PM10 and smaller) is what presents the greatest health concern. Assessing the potential risk of a soil requires examining its chemical content, its biological and mineralogical composition, its sedimentological characteristics, detailed data on grain size distribution, and other information. This analysis requires a relatively large mass of appropriate size fraction(s), obtained by dry extraction. Most methods for extracting fine particulates from soil collect only small amounts of sediment, or use wet extraction. This paper describes the Soil Fine Particle Extractor, a setup for dry extracting large volumes (dozens of grams and more) of fine particulate matter (PM10 and smaller) from bulk soil samples. Separation takes place in two steps. Primary separation in a cylindrical separator 70 cm high and 40 cm in diameter removes all coarse particles from the sample. The remaining sediment then flows through a 200 cm long and 7 cm diameter inclined elutriator connected to a three-engine vacuum cleaner. The setup allows extraction of different size fractions depending on the adjustment of the control parameters (suction rate, length, diameter and inclination of the elutriator, thickness of the sediment layer drawn in by the system). The article presents examples of extractions from soil collected in loess and desert environments, ranging from PM2.5 to PM10. It also evaluates the efficiency of the technique by investigating the extraction efficiency for a large number of particle sizes, varying from 0.1 to 70 mu m. Extraction occurs most efficiently for particles between 1 and 10 mu m, with an optimum around 5 mu m.


英文关键词Extraction Dust Fine particles Soil
类型Article
语种英语
国家Belgium ; USA
收录类别SCI-E
WOS记录号WOS:000311495500007
WOS关键词TRACE-ELEMENTS ; HOUSE-DUST ; EMISSION ; STREET ; DAMAGE
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/171106
作者单位1.Katholieke Univ Leuven, Phys & Reg Geog Res Grp, Dept Earth & Environm Sci, Geoinst, B-3001 Heverlee, Belgium;
2.Univ Nevada, Dept Geosci, Las Vegas, NV 89154 USA
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Goossens, Dirk. A method for dry extracting large volumes of fine particulate matter from bulk soil samples[J],2012,5(4):425-431.
APA Goossens, Dirk.(2012).A method for dry extracting large volumes of fine particulate matter from bulk soil samples.AIR QUALITY ATMOSPHERE AND HEALTH,5(4),425-431.
MLA Goossens, Dirk."A method for dry extracting large volumes of fine particulate matter from bulk soil samples".AIR QUALITY ATMOSPHERE AND HEALTH 5.4(2012):425-431.
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