STUDY ON CHARACTERISTICS OF WATER-SOLUBLE IONS IN PM_(10) IN AUTUMN IN NANJING
It was researched that the concentration level,change law and correlativity of the water soluble ions in PM10 in autumn in the urbon and suburban areas of Nanjing.The results showed that water soluble ions were an important part of PM10 in Nanjing,which accounted for 26.8% to 49.5% of PM10 total amount;NO-3,SO2-4 were the main component of PM10 in Nanjing while the correlation between SO2-4 and PM10 was high,in suburban and urban areas correlation coefficients were 0.97 and 0.98;the soil source contribution to Mg2+ was more than marine aerosols.Suburban and urban non-sea salt Mg2+/Ca2+ ratios were 0.0308~0.0557 and 0.0314~0.0558,which were different from desert regions of northern China,showing that PM10 is mainly affected by local source;suburban and urban NO-3/SO2-4 ratios(average) were 0.74 and 0.80,showing that NO-3 and SO2-4 in PM10 in Nanjing were mainly from vehicle exhaust emissions.
NETL
NSTL
万方数据
维普
