Quantitative analysis of the elemental composition of ion liquid with confocal X-ray fluorescence based on peak to background ratio

Publication date: Available online 3 May 2019Source: Radiation Physics and ChemistryAuthor(s): Yufei Li, Xiaoyun Zhang, Yabing Wang, Xuepeng Sun, Zhiguo Liu, Tianxi SunAbstractConfocal X-ray fluorescence (XRF) based on the peak to background ratio was applied to quantitatively analyse the elemental composition of an ion liquid. The confocal micro-volume of the confocal XRF for non-destructive quantitative analysis is often submerged at varying depths in the sample. The modification of the absorption of the detected X-rays coming from the confocal micro-volume submerged at varying depths is complicated. For avoiding complicated modification of the sample absorption outside the confocal micro-volume, the peak to background ratio which was related to elemental concentration was used to quantitatively analyse the elemental composition of the ion liquid. A standard curve using the peak to background ratio was obtained with the confocal micro-volume at a fixed distance from the wall of the container which contained the ion liquid. The standard curve enabled the analysis of the data obtained with the confocal micro-volume at varying distances from the container wall.

Source: Radiation Physics and Chemistry - May 4, 2019 Category: Physics Source Type: research