Seagoing method for the determination of chromium(III) and total chromium in sea water by electron-capture detection gas chromatography
✍ Scribed by Robert K. Mugo; Kristin J. Orians
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 842 KB
- Volume
- 271
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
A seagomg method for the determmatlon of Cr(III) and total chrommm m sea water IS presented The method employs electron-capture detection of the volatile tnfluoroacetylacetone denvatlve of 0011) formed via solvent extra&on unth toluene, total chrommm IS determmed as Cr(III) after reduction DetectIon hmlts at sea are 0 062 and 0 255 nM for C&II) and total chrommm, respectively Accuracy for total chrommm was verdied by the analysis of standard reference materials from the National Research Councd of Canada The procedure has a preclslon of 1 3% at 4 7 nM total chrommm, and has been apphed to stored samples m the laboratory m addltlon to Its use at sea