Quantitative analysis of single aerosol particles using polycapillary X-ray optics
详细信息 查看全文
- 作者：Tianxi Sun ; Zhiguo Liu ; Yude Li ; Guangfu Wang ; Guanghua Zhu ; Xunliang Ding ; Qing Xu ; Hui Liu ; Ping Luo ; Qiuli Pan ; Xiaoyan Lin ; Yuepeng Teng
- 关键词：Micro X-ray fluorescence ; Capillary X-ray optics ; Single aerosol particle analysis
- 刊名：Spectrochimica Acta Part B: Atomic Spectroscopy
- 出版年：2009
- 出版时间：November-December 2009
- 年：2009
- 卷：64
- 期：11-12
- 页码：1194-1197
- 全文大小：291 K
文摘
A laboratory micro X-ray fluorescence spectrometer based on polycapillary X-ray optics (PXRO) was used to carry out the quantitative X-ray fluorescence analysis of single aerosol particles with smaller size than that of focal spot of PXRO. The minimum detection limits measured with the thin-film reference standards were in the range from 13.3 to 0.7 ng cm− 2 when the operating current and voltage were 70 mA and 35 kV, respectively. In order to reduce the effects of the inhomogeneous distributions of the X-ray intensity in the focal spot of the PXRO on the analysis results, the sensitivities were corrected by using a Gaussian function for the quantitative analysis of single aerosol particles. The accuracy of the analysis of single standard solution drops was on average 25 % depending on the element and concentration. The precision of the analysis was better than 5 % .