摘要
从乌鲁木齐工业区、交通区、生活区、风景对照区4个典型区域入手,利用崂应2050型大气自动采样器及TSP/PM10/PM5/PM2.5/切割头对大气中TSP、PM10、PM5、PM2.5进行同步采集,并采用火焰原子吸收分光光度法及石墨炉原子吸收分光光度法对TSP、PM10、PM5、PM2.5中的6种重金属Cd、Pb、Cu、Ni、Zn、Mn的含量进行了测定。测定结果为:Cd的浓度为0.52~10.72 ng/m^3;Pb的浓度为25.66~356.87 ng/m^3;Cu的浓度为12.57~173.93 ng/m^3;Ni的浓度为1.85~78.22 ng/m^3;Zn的浓度为67.58~431.49 ng/m^3;Mn的浓度为18.87~310.20 ng/m^3。大气颗粒物中各重金属之间存在一定的相关性,重金属的分布与风力也有一定的关系。
From the four typical areas( industrial zone,transport area,living quarters and scenic spot) in Urumqi,the study used the atmosphere automatic sampler( Lao-ying2050),and TSP / PM10/ PM5/ PM2. 5precietc to collect TSP、PM10、PM5、PM2. 5in the atmosphere simultaneously. Flame atomic absorption spectrometry and graphite furnace atomic absorption spectrometry was used to measure the concentration of Cd、Pb、Cu、Ni、Zn and Mn in TSP、PM10、PM5、PM2. 5. The results showed that: the range of Cd was 0. 52 ~ 10. 72 ng / m3; the range of Pb was 25. 66 ~ 356. 87 ng/m3; the range of Cu was 12. 57 ~ 173. 93 ng/m3; the range of Ni was 1. 85 ~ 78. 22 ng/m3; the range of Zn was 67. 58 ~ 431. 49 ng/m3; the range of Mn was 18. 87 ~310. 20 ng / m3. The heavy metal in atmospheric particulates had correlation with wind strength,and the distribution of heavy metals and wind also had a certain relationship.
出处
《环境工程》
CAS
CSCD
北大核心
2015年第4期75-81,共7页
Environmental Engineering
基金
国家自然科学基金资助项目(21167017)
乌鲁木齐市科技局资金资助项目(Y111310008)
关键词
乌鲁木齐
采暖期
重金属
Urumqi
heating period
heavy metals
