Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/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
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ISSN | 1873-9318 |
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 |
推荐引用方式 GB/T 7714 | 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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