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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Sonication in the Analysis of Hexavalent Chromium in Welding Fume

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1999, v.12 no.5, pp.447-459
Yoon, Chung-Sik
Paik, Nam-Won
Kim, Jeong-Han
Park, Dong-Uk
Choi, Sang-Jun
Kim, Shin-Bum
Chae, Hyun-Byung
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Abstract

A study was conducted to compare three analytical methods for determination of hexavalent chromium in the welding fume. Precision and accuracy arc documented for colorimetric, ion chromatographic, and inductively coupled plasma-optical emission spectroscopic method. Evidence is presented that welding fume can affect the oxidation of trivalent chromium. A simple sonication extraction method, proposed in this study, instead of hot alkaline extraction has the advantage of minimizing the potential for chromium oxidation.

keywords
hexavalent chromium, welding fume, DPC, alkalIne extraction, sonication


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