Spatial and temporal variation of heavy metals in atmospheric aerosol of Delhi

被引：141
|
作者：
Khillare, PS [1 ]
Balachandran, S [1 ]
Meena, BR [1 ]
机构：
[1] Jawaharlal Nehru Univ, Sch Environm Sci, Air Pollut Monitoring Lab, New Delhi 110067, India
来源：
ENVIRONMENTAL MONITORING AND ASSESSMENT | 2004年 / 90卷 / 1-3期
关键词：
Delhi; enrichment factors; source apportionment; trace metals; TSPM;
D O I：
10.1023/B:EMAS.0000003555.36394.17
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The levels of Suspended Particulate Matter (SPM) and heavy metals viz. Pb, Cd, Cr, Ni and Fe were measured. Aerosol samples from four different locations in Delhi were collected by High-volume samplers for a period of one year from July 1997 June 1998. Metal concentration was determined by Atomic Absorption Spectrometry. The annual average concentration of SPM in Delhi was found to be 416.34 +/- 223 mug m(-3). The atmospheric aerosol samples were highly enriched with elements viz. Pb and Cd, which originate from various human activities like transportation and industrial processes. Principal Component Analysis (PCA) showed vehicular traffic and industrial emission as the major contributors of metals. The annual average concentration of Pb did not exceed the national standard of 0.75 mug m(-3).
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页码：1 / 21
页数：21
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