摘要
本文对北京、宣威等六城市IPM中砷的含量分布进行了调查,结果表明在<3.3μm的颗粒物中砷的含量占60～70％,说明砷能在细小颗粒物表面高度富集。并进一步证明燃煤是空气中砷的主要来源之一。
This paper surveyed the distribution of As content on inhalable partieulate matter collected from Beijing, Wuhan, Shanghai , Shenyang, Taiyuan cities and Xuanwei County, Yunnan prorncc. The result shown that As content is 60-70% in<3.3 μIPM, is higher in the particulte matter collected from the coal-burning for heating city than that in which collected from the non-coal-burning for heating city, and is higher in IPM collected in winter than in IPM collected in summer from same city. Statistic data indicated that As content follows logari-thmicnomal distribution in different sizes of inhalable particle. The relative coefficient is 0.973-0.999, Having remarkable linearity relation. Mass middle diameter is 1.7-2.9μ. Proving the arsenic can be accumulated strongly on surface of the smaller particulate matter, and verified further that coal-burning is one of the arsenic main sources in atmosphere.
出处
《环境与健康杂志》
CAS
CSSCI
CSCD
北大核心
1989年第5期5-8,共4页
Journal of Environment and Health
