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Ion Chromatography of Soluble Cr(III) and Cr(VI)

Ion chromatography coupled with a conductivity detector was used to investigate the analysis of Cr(III) and Cr(VI) in aqueous samples. An IC methodology for Cr(III) was developed using a cation column and an eluent containing tartaric acid, ethylenediamine, and acetonitrile at pH 2.9. The detection limit of this method can reach 0.1 ppm level with good precision. Several operational parameters were evaluated during the regular use of the method. Comparison of the IC method with AA method showed good agreement between the two methods. The anion exchange column was used for Cr(VI) determination. The best results were obtained with an eluent containing sodium gluconate, borate buffer, glycerin, and acetonitrile. The retention time for the Cr207 2 - sample was 11 min. and the calibration curve was linear between 1.0 and 100 ppm.

Identiferoai:union.ndltd.org:unt.edu/info:ark/67531/metadc500410
Date08 1900
CreatorsHuang, Julie Shiong-Jiun
ContributorsSaleh, Farida Y., Tarter, James G., Brady, William Thomas
PublisherUniversity of North Texas
Source SetsUniversity of North Texas
LanguageEnglish
Detected LanguageEnglish
TypeThesis or Dissertation
Formatviii, 75 leaves: ill., Text
RightsPublic, Huang, Julie Shiong-Jiun, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved.

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