摘要
利用2006年12月南京市北郊雾水样品化学分析资料和同期气象资料研究郊区雾水中重金属和雾天大气污染特征。结果表明，郊区出现雾天时，不利于大气污染物的扩散，造成较严重的大气污染，污染物浓度变化与雾的生消基本同步；大雾期间PM10浓度比起雾前高2．5倍。雾水中重金属浓度在0．0205—1．8248mg／L范围，平均1．32mg／L；对重金属与大气污染物作相关分析，除类金属As外，Cd、Cr、Cu、Mn和Fe浓度两两之间相关系数均大于0．91，说明重金属排放具有同源性。
Based on the analysis of sampled fog water in the north suburb of Nanjing city during December 2006, study is conducted of heavy metals of fog water and air pollution in foggy weather. Results show that foggy weather condition prevented the diffusion of pollutants, which led to the heavier air pollution and changes in pollutant concentrations were approximately in step with fog formation/dissipation;the heaviest concentration of PM10 on fog days was 2.5 to 10 times that in the pre-fog stage. The heavy metal concentrations of fog-water ranged from 0.020 5 to 1. 824 8 mg/L, with a mean of 1. 32 mg/L; one-to-one correlation analysis between concentrations of heavy metals（ Cd, Cr, Cu, Mn and Fe except As）and those of gaseous pollutants shows that their correlation coefficients were all greater than 0.91 ,thereby indicating that heavy metal and gaseous pollutants were emitted by the same pollution source.
出处
《南京气象学院学报》
CSCD
北大核心
2008年第4期592-598,共7页
Journal of Nanjing Institute of Meteorology
基金
江苏省教育厅自然科学基础研究重大项目(06KJA17021)
江苏省气象灾害重点实验室资助项目(KLME060208)
江苏省自然科学基金资助项目(BK2007226)
中国气象局科研型业务专项
关键词
雾水
重金属
大气污染
南京北郊
fog water
heavy Metal
gaseous pollutants
north suburb of Nanjing
