A Low-Power Surfatron Source for the Atomic-Emission-Spectrometric Detection of Nonmetals in Aqueous Solution

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Abstract:

Emission spectra in the UV-visible and near-infrared (NIR) spectral regions are presented for several nonmetals introduced as aqueous solutions by a glass-frit nebulizer. Detectability improves dramatically for some nonmetals with the use of a desolvation system to reduce the amount of water vapor entering the plasma. Detection limits for P, I, S, Cl, Br, and C are in the low- to sub-ppm range. Good precision (RSD <5%) and a dynamic range of 2-3 decades were observed for I and P. Easily ionizable elements such as K, Na, and Li can enhance nonmetal emission by as much as 30%.

Keywords: Determination of nonmetals in solution; Emission spectrometry; Microwave-induced plasma; Solution nebulization; Surfatron

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702884429265

Affiliations: 1: Department of Chemistry, Indiana University, Bloomington, Indiana 47405-4001; current address: Glaxo Inc., Five Moore Dr., Research Triangle Park, NC 27709 2: Department of Chemistry, Indiana University, Bloomington, Indiana 47405-4001; current address: Varian Techtron Pty. Ltd., P.O. Box 222, Springvale, Victoria, Australia 3171 3: Department of Chemistry, Indiana University, Bloomington, Indiana 47405-4001

Publication date: May 1, 1988

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