By Guodong Zhang, Shengguo Cheng
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Extra info for Advances in Environmental Engineering: Selected, Peer Reviewed Papers from the 2012 Global Conference on Civil, Structural and Environmental ... International
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For fatty acids, the ultrafine particle average mass fraction is 48%, while the share in the fine particle is up to 67 percent during the experimental period. It is clear that fatty acids are easily formed in the fine particulate matter and ultrafine particulate matter which come from fuel combustion as well. The total mass concentrations in distributions of dicarboxylic acids in January, February, April and May are shown in Table 3. 518 * ** , the same as Table 2. 43 ng/m³ during experimental period, which are much lower than fatty acids; A comparison for monthly mass concentrations in dicarboxylic acids is as follows: May> April> January> February.
Abstract: Atmospheric particulate samples were collected during January, February, April and May 2012, separately. Twenty-one fatty acids and seven dicarboxylic acids were measured by GC-MS. 5, PM1, respectively. Fatty acids and dicarboxylic acids concentrate mainly in the PM1. C11-C24 of fatty acids exhibit a significant even carbon predominances, but dicarboxylic acids present no parity preponderance. In the fatty acids, the concentration of hexadecanoic acid is the highest with that of octadecanoic acid followed; Nonandioic acid is the highest in dicarboxylic acids.
Advances in Environmental Engineering: Selected, Peer Reviewed Papers from the 2012 Global Conference on Civil, Structural and Environmental ... International by Guodong Zhang, Shengguo Cheng