Abstract：The total suspended particulates(TSP) samples in atmospheric aerosol were collected in western the Yellow Sea in winter 2012 to study the main water-soluble ion concentrations of Cl-,NO3-,SO42-,Na+,K+,NH4+,Mg2+, Ca2+ and CH3SO3-(MSA) as well as their chemical characteristics and to discuss the influence of human activities on coastal atmospheric aerosol.The results showed that the concentrations of secondary ions(nss-SO42-,NO3- and NH4+) in aerosol were the highest,accounting for 69.4% of the total determined ions.At the same time,Cl- showed a certain degree of enrichment due to the influence of human activities,and the average value of enrichment factor was 34.6%.The concentrations of MSA were relatively low,with an average of 0.014±0.012 μg/m3.The analysis of sulfate source showed that the contribution of sea-salt sulfate was 7.3% to the total SO42-,while biogenic sulfate accounted for 5.0% of nss-SO42-,indicating that human input was the main source of sulfate in aerosol over the Yellow Sea during winter.In addition,the proportion of NO3- in inorganic nitrogen in aerosol is 62.56%~83.03%.
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