期刊
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
卷 106, 期 -, 页码 75-80出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2015.01.009
关键词
Microplasma Optical Emission Spectrometry; Battery operation; Rapid prototyping; Polymeric substrate; Portable spectrometer
类别
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada-California Strategic Innovation Partnership [140532]
A rapidly-prototyped, battery-operated, atmospheric-pressure, self-igniting Ar-H-2 microplasma was interfaced to a portable fiber-optic spectrometer. The microplasma-spectrometer combination was used to document the spectral lines emitted when mu L of dilute solutions of single element standards of Ag, Ba, Ca, Eu, Pd, Rb and Sr were first dried and then vaporized into the microplasma. A small-size, electrothermal vaporization system was used for microsample introduction. Identification of the prominent spectral lines for these elements is reported. It was found that the most prominent spectral line for Ba, Ca and Sr was different than that emitted from an inductively coupled plasma (ICP). In general, prominent spectral lines with low excitation energy were dominating, thus resulting in spectra simpler than those emitted from an ICP. Detection limits were between 45 and 180 pg (expressed in absolute amounts). When expressed in relative concentration units, they ranged between 15 and 60 mu g/L (obtained using 3 mu L diluted standards). Calibration curves were linear (on the average) for 1.5 orders-of-magnitude. Average precision was 15%. Analytical capability and utility was demonstrated using the determination of Ca and Mg in (medicinal) thermal spring water. (C) 2015 Elsevier B.V. All rights reserved.
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