Preliminary Study on the Elemental Quantification of in Ambient Liquid Samples of Microliter Volume Using the In-air Micro-PIXE Technique

Autor: Chang-Jin Ma, Cheol-Soo Lim, Takuro Sakai
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Asian Journal of Atmospheric Environment, Vol 11, Iss 1, Pp 54-60 (2017)
Druh dokumentu: article
ISSN: 1976-6912
2287-1160
DOI: 10.5572/ajae.2017.11.1.054
Popis: Quantifying the trace elements in infinitesimal ambient liquid samples (e.g., single raindrop, cloud/fog water, and the soluble fraction extracted from the particles collected for a short time) is an important task for understanding formation processes, heating/cooling rates, and their health hazards. The purpose of this study is to employ an in-air micro PIXE system for quantitative analysis of the trace elements in a thimbleful of reference liquid sample. The bag type liquid sample holder originally designed with 10 μm thick Mylar® film retained the original shape without any film perforation and apparent peaks of film blank by the end of the analysis. As one of tasks to be solved, the homogeneity of the elemental distribution in liquid reference species was verified by the X-ray line profiles for several references. It was possible to resolve the significant peaks for whole target elements corresponding to the channel number of micro-PIXE spectrum. The calibration curves for the six target elements (Si, S, Cl, Fe, Ni, and Zn) in standard solutions were successfully plotted by concentration (ppm) and ROI of interest net counts/dose (nC).
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