Saccharide compounds in the PM2.5 samples collected at Baoshan and Xujiahui of Shanghai were quantified with GC-MS. The results show that saccharides in PM2.5 were mainly comprised of anhydro sugars, monosaccharides and sugar alcohols. The annual average concentrations of total saccharides at Baoshan and
Xujiahui were 340 ng/m3 and 268 ng/m3, respectively. The analysis of correlations and positive matrix factorization indicates that the main source of arabitol in PM2.5 in Shanghai was biomass burning, while glucose and fructose came from re-suspended soils. Contributions of soil organics to the total water-soluble organics in PM2.5 were higher in spring and summer (6%~10%) than that in the fall and winter, suggesting that organics from soil in spring and summer had significant impact on hygroscopicity of airborne fine particles, atmospheric visibility and the formation of haze.
LI Man, ZHONG Mian, JING Liang, FENG Jia-liang
. Concentrations and Sources of Saccharides in PM2.5 in Shanghai[J]. Journal of Shanghai University, 2013
, 19(4)
: 387
-392
.
DOI: 10.3969/j.issn.1007-2861.2013.04.011
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