乌鲁木齐市环境空气中TSP和PM_(10)来源解析

Analytic studies on source of TSP and PM10 in environmental air of Urumchi city

2002年,在乌鲁木齐市5个采样点分别采集了环境空气中的总悬浮颗粒物(TSP)和可吸入颗粒物(PM10).用化学质量平衡(CMB)受体模型和二重源解析技术解析了TSP和PM10的来源,结果表明,各主要源类对TSP的分担率依次为扬尘34%、燃煤尘26%、建筑水泥尘10%、硫酸盐8%、土壤风沙尘7%、机动车尾气尘6%、钢铁尘2%、硝酸盐1%、其它6%;对PM10的分担率依次为:扬尘30%、燃煤尘28%、建筑水泥尘11%、硫酸盐10%、机动车尾气尘8%、土壤风沙尘8%、硝酸盐1%、其它3%.

The total suspended and inhalabls particulate matter (TSP and PM10) samples in environmental air were collected respectively in the year 2002 at five sampling sites in Urumchi city. The sources of TSP and PM10 were analyzed using chemical mass balance (CMB) receptor model and nested chemical mass balance (NCMB) technique. The major sources of TSP were in the order of suspended dusts 34%, coal combustion dust 26%, cement dusts 10%, sulfate 8%, soil wind sand dusts 7%, motor vehicle exhausts 6%, steel dusts 2%, nitrate 1%, others 6%. The major sources of PM10 were in the order of suspended dusts 30%, coal combustion 28%, cement dusts 11%, sulfate 10%, motor vehicle exhausts 8%, soil wind sand dusts 8%, nitrate 1%, others 3%.