摘要
[目的]研究上海大气微小颗粒物中的金属元素、可溶性离子、有机碳(OC)、无机碳(EC)的化学组成特征。[方法]对上海市5个采样点的PM_(2.5)样品进行了化学成分分析,用离子色谱法分析可溶性离子,用能量色散X荧光(EDXRF)法分析16种金属元素,用热碳分解法分析有机碳和无机碳,用气相色谱-质谱联用(GC-MS)定性分析可溶性有机物。[结果]各监测点PM_(2.5)样品中可溶性离子含量约占35%,总碳约占40%,金属元素所占份额不到10%,其余为未知物的质量,约占15%。[结论]初步得到上海市PM_(2.5)的化学组成特征。
[ Objective ]To study the chemical component of element, soluble ion and organic carbon（ OC ）/elemental carbon（ EC ） in PM2.5 in the atmosphere of Shanghai. [ Methods ] The chemical component in PM2.5 of 5 sampling sites in Shanghai was.analyzed. Major soluble ion was tested by ion ehromatogram, 16 elements were tested by engery dispersive x-ray fluorescence（ EDXRF ）, EC and OC were tested by thermal decomposition and soluble organic components were tested by full spectral analysis of gas chromatography-mass spectrometry（ GC-MS ）. [ Results ] Major soluble ion occupies 35% of PM2.5 sample, TC occupies 40%, element matter occupies less than 10%, others are unknown matter. [ Conclusion ] The chemical component of PM2.5 in Shanghai has been identified.
出处
《环境与职业医学》
CAS
北大核心
2008年第4期365-369,共5页
Journal of Environmental and Occupational Medicine
基金
上海市环境保护局科研项目(编号：沪环科00-14)
关键词
微小颗粒物
可溶性离子
元素
有机碳
无机碳
fine particle
soluble ion
element matter
organic carbon
elemental carbon
