Full Article: PDF
Scientific Object Identifier: http://s-o-i.org/1.1/TAS-06-62-7
DOI: https://dx.doi.org/10.15863/TAS.2018.06.62.7
Language: Russian
Citation: Pyshkova EP, Dmitriev PA, Baklanov AN, Baklanova LV (2018) IMPROVING THE SAFETY OF THE SALT. CONTENT DETERMINATION VARIOUS FORMS OF CHROM. ISJ Theoretical & Applied Science, 06 (62): 31-37. Soi: http://s-o-i.org/1.1/TAS-06-62-7 Doi: https://dx.doi.org/10.15863/TAS.2018.06.62.7 |
Pages: 31-37
Published: 30.06.2018
Abstract: The use of ultrasound for the intensification of sample preparation in the spectrophotometric determination of chromium in common salt and brines is studied: to remove carbon dioxide from the analyzed solutions, to intensify the concentration of chromium (III) by coprecipitation, to oxidize chromium (III) to chromium (VI). A procedure for the determination of chromium (III) and chromium (VI) in common salt and brines has been developed. The limit of detection of chromium in the photometry of aqueous solutions of diphenylcarbazide 0.012 mg / kg, when extracting the chromium (VI) complex with diphenylcarbazide in isoamyl alcohol is 0020 mg / kg.
Key words: ultrasound, table salt, safety, chromium in various degrees of oxidation.
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