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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,
C., Paik,
N., Kim,
J., Park,
D., Choi,
S., Kim,
S., &
Chae,
H.
(1999). Sonication in the Analysis of Hexavalent Chromium in Welding Fume. Analytical Science and Technology, 12(5), 447-459.
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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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