Literature DB >> 15887360

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

P S Khillare1, S Balachandran, Bharat Raj Meena.   

Abstract

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 microg 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 microg m(-3).

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Year:  2004        PMID： 15887360     DOI： 10.1023/b:emas.0000003555.36394.17

Source DB:  PubMed          Journal:  Environ Monit Assess        ISSN： 0167-6369            Impact factor:   2.513


  12 in total

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