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- E-ISSN 2288-8985
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Determination of osmium using sulfurous acid as reductant by ICP-AES
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2007, v.20 no.3, pp.251-254
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(2007). Determination of osmium using sulfurous acid as reductant by ICP-AES. Analytical Science and Technology, 20(3), 251-254.
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Abstract
In this study, a convenient, fast and accurate inductively coupled plasma atomic emission spectrometry (ICP-AES) method has been optimized for the determination of osmium in aqueous solutions. The method makes use of the reaction of sulfurous acid with osmium to quantitative conversion of volatile Os(VIII) to non-volatile Os(IV) in the pH range 2-10. The response was found to be stabilized immediately after sulfurous acid reacted with osmium. The precision was calculated to be 0.5-4.5 % (RSD) under various ICP-AES conditions. The detection limit was 2.5-57.7 ng/g based on <TEX>$3{\sigma}$</TEX> of the blank response (n
- keywords
- osmium analysis, sulfurous acid, ICP-AES
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