分析并探讨了南京市秸秆焚烧期间细颗粒中水溶性阴离子和铵,有机碳(OC)和元素碳(EC),以及Cu、Zn、Pb、Si等38种元素的含量和浓度。结果表明:细颗粒(PM2.5)水溶性离子中硫酸根浓度最高,其次是铵根离子,硝酸盐和氯离子,氟离子和亚硝酸盐最低。秸秆焚烧期间细颗粒样品中离子含量占26%,Si元素和金属所占份额为17.1%,碳元素占19.6%,其余未知物质约占37%。
Analyses the concentration of water-soluble anion and ammonia, organic carbon (OC) and elemental carbon (EC) , as well as copper, zinc, lead, silica and other elements (38 in total), in fine particles, during the period when stalks are burnt in Nanjing. The result shows that the water-soluble ion has highest concentration of sulfate, followed by ammonia, nitrate or chloride ion, and fluoride ion and nitrite, Ion takes 26% of fine particles (PM2.5 ) during that period, while silica and metals take only 17.1% and carbon takes 19.6% , with 37% unknown in the remaining.