Characteristics and Source Apportionment of Water-soluble Inorganic Ions in Road Dust PM During Spring in Tianjin Using the Quadrat Sampling Method.

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Summary of "Characteristics and Source Apportionment of Water-soluble Inorganic Ions in Road Dust PM During Spring in Tianjin Using the Quadrat Sampling Method."

In order to collect comprehensive information regarding the characteristics and sources of the water-soluble inorganic ions in road dust (RD) PM in Tianjin, samples of road dust were collected in April 2015 in Tianjin, and then re-suspended on filters using a NK-ZXF sampler. The concentrations of the major water-soluble inorganic ions were analyzed by ion chromatography. A correlation analysis, ratio method, and principal component analysis were used to analyze the sources of RD PM. The results showed that the total water-soluble inorganic ion concentration in Tianjin accounted for 6.13%±2.32%, varying with different road types. Na, K, Mg, and Ca showed high homology. NO/SO revealed that the main source of PM was mostly attributed to fixed sources. The principal component analysis showed that the main sources of RD PM in Tianjin were coal combustion, mobile sources, biomass burning, and construction dust.


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Name: Huan jing ke xue= Huanjing kexue
ISSN: 0250-3301
Pages: 1994-1999


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