Author/Authors :
Sun، نويسنده , , Tianxi and Liu، نويسنده , , Zhiguo and Li، نويسنده , , Yude and Wang، نويسنده , , Guangfu and Zhu، نويسنده , , Guanghua and Ding، نويسنده , , Xunliang and Xu، نويسنده , , Qing and Liu، نويسنده , , Hui and Luo، نويسنده , , Ping and Pan، نويسنده , , Qiuli and Lin، نويسنده , , Xiaoyan and Teng، نويسنده , , Yuepeng، نويسنده ,
Abstract :
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%.
