高能偏振能量色散-X射线荧光光谱法测定PM<sub>10</sub>大气颗粒物的组成

吉昂; 郑南; 王河锦; 徐子优; 李国会

高能偏振能量色散-X射线荧光光谱法测定PM₁₀大气颗粒物的组成

1.
中国科学院上海硅酸盐研究所, 上海 200050
2.
北京大学地球与空间科学学院, 北京 100871
3.
北京大学地球与空间科学学院, 北京 100871
4.
北京市环境保护监测中心, 北京 100044
5.
中国地质科学院地球物理地球化学勘查研究所, 河北廊坊 065000

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- 收稿日期: 2010-11-16
- 修回日期: 2011-03-14

Determination of Composition in PM₁₀ Aerosols by High-Energy Polarized Energy-Dispersive X-ray Fluorescence Spectrometry

1.
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
2.
School of Earth and Space Sciences, Peking University, Beijing 100871, China
3.
School of Earth and Space Sciences, Peking University, Beijing 100871, China
4.
Beijing Municipal Environmental Monitoring Center, Beijing 100044, China
5.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China

摘要

摘要: 为配合X射线衍射分析(XRD)方法对可吸入大气颗粒悬浮物(PM₁₀)的结晶物相进行定性和定量分析的研究工作,本文应用高能偏振能量色散X射线荧光光谱(HE- P-EDXRF)对Whatman玻璃纤维滤膜采集的PM₁₀颗粒物中主、次量元素进行定量分析,着重研究了空气滤膜空白值对测定PM₁₀颗粒物中组成的影响。结果表明,当玻璃纤维滤膜空白值中元素的面密度大于0.1 μg/cm²时,需使用玻璃纤维滤膜为载体的标准样品;元素的面密度小于0.1 μg/cm²时,可用聚碳酸脂膜为载体的标准样品。对HE-P-EDXRF谱仪测定PM₁₀颗粒物中痕量重元素进行探讨,将测定元素范围扩展到62个元素,其中Na、Mg、S、Y、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu的检岀限>0.1 μg/cm²;Ca、Cr、Mn、Fe、Co、Ni、Cu、Zn、Br和Rb的检岀限<0.01 μg/cm²;Cl、Al、Si、P、K、Sc、Ti、V、Ge、As、Br、Se、Sr、Zr、Mo、Pd、Rh、In、Nb、Ag、Cd、Te、Sb、Sn、Ba、Cs、La、Ce、Pr、Au、Pt、W、Tl、Pb、Bi、Th和U等元素检出限为0.1~0.01 μg/cm²。
- PM₁₀大气颗粒物 /
- 高能偏振能量色散-X射线荧光光谱法(HE-P-EDXRF) /
- Epsilon /
- 5 /
- X射线荧光光谱仪
Abstract: In order to coordinate with X-ray Diffractomer (XRD) research on analyzing the crystal phase of inhaled aerosol PM₁₀ qualitatively and quantitatively, a method of using High-Energy Polarized Energy-Dispersive X-ray Fluorescence Spectrometry (HE-P-EDXRF) was developed to quantitatively measure the major and minor elements in aerosol PM₁₀ collected on Whatman glass fiber filters. The study focused on the effect of the blank values of air filter membrane for the measurement compositions of aerosol PM₁₀. The results indicate that the standards with glass fiber membrane filter should be used as carriers if the elemental area density of the blank glass fiber filter is more than 0.1 μg/cm³, and the nuclepore polycarbonate aerosol membrane filter should be used if the elemental area density is less than 0.1 μg/cm³. The measurement of heavy trace elements using He-P-EDXRF was also investigated, and extended the scope of the measuring elements to 62. The detection limits of Na, Mg, S, Y, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu were more than 0.1 μg/m², the detection limits of Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, Br and Rb were less than 0.01 μg/m², and the detection limits of Cl, Al, Si, P, K, Sc, Ti, V, Ge, As, Br, Se, Sr, Zr, Mo, Pd, Rh, In, Nb, Ag, Cd, Te, Sb, Sn, Ba, Cs, La, Ce, Pr, Au, Pt, W, Tl, Pb, Bi, Th and U were 0.1-0.01 μg/cm².
- aerosol /
- PM₁₀ /
- /
- high-energy /
- polarized

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高能偏振能量色散-X射线荧光光谱法测定PM10大气颗粒物的组成

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Determination of Composition in PM10 Aerosols by High-Energy Polarized Energy-Dispersive X-ray Fluorescence Spectrometry

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目录

高能偏振能量色散-X射线荧光光谱法测定PM₁₀大气颗粒物的组成

Determination of Composition in PM₁₀ Aerosols by High-Energy Polarized Energy-Dispersive X-ray Fluorescence Spectrometry