CAJ | 학술논문

对昆山市区域7个点位夏秋季的5中水溶性无机阴离子（SO2－4、NO3－、NO2－、Cl －、F －）的污染特征进行了调查，结果表明，昆山市夏季大气 PM2．5中5种离子平均值排序为：ρ（SO2－4）＞ρ（Cl －）＞ρ（NO3－）＞ρ（F －）＞ρ（NO2－）；秋季平均值排序为：ρ（SO2－4）＞ρ（NO3－）＞ρ（Cl －）＞ρ（F －）＞ρ（NO2－）。SO2－4、NO3－和 Cl －3者的总量在 PM2．5中占比20％。除 F －以外各区域离子的平均值秋季比夏季要高。ρ（NO3－）／ρ（SO2－4）表明，固定污染源在昆山市大气颗粒物污染中仍然占很大比重，但大部分测点的比值接近1，说明移动源也是昆山大气颗粒物的重要污染源。
대곤산시구역7개점위하추계적5중수용성무궤음리자（SO2－4、NO3－、NO2－、Cl －、F －）적오염특정진행료조사，결과표명，곤산시하계대기 PM2．5중5충리자평균치배서위：ρ（SO2－4）＞ρ（Cl －）＞ρ（NO3－）＞ρ（F －）＞ρ（NO2－）；추계평균치배서위：ρ（SO2－4）＞ρ（NO3－）＞ρ（Cl －）＞ρ（F －）＞ρ（NO2－）。SO2－4、NO3－화 Cl －3자적총량재 PM2．5중점비20％。제 F －이외각구역리자적평균치추계비하계요고。ρ（NO3－）／ρ（SO2－4）표명，고정오염원재곤산시대기과립물오염중잉연점흔대비중，단대부분측점적비치접근1，설명이동원야시곤산대기과립물적중요오염원。
The pollution levels of 5 kinds of inorganic anions (SO2 -4 、NO2-、NO3-、Cl -and F -)in atmospheric PM2.5 in 7 points in Kunshan were determined synchronously with ion chromatography technique.Results showed that average concentrations of 5 kinds of ions in summer atmospheric PM2.5 were in order of SO2 -4 >Cl ->NO3->F ->NO2-,and the autumn average concentration order was SO2 -4 >NO3->Cl ->F ->NO2-.The amount of SO2 -4 、NO-3 and Cl -in PM2.5 accounted for more than 20% .Be-sides the F -the average concentration of ions in fall was higher than in summer.The value of [NO3-]/[SO2 -4 ]showed that station-ary sources in kunshan atmospheric particulate matter pollution which still accounted for a large proportion.However,most of the ra-tio of the measuring point is close to 1 ,which showed that mobile source of pollution was also a major pollution source of atmospheric particulates in kunshan.