Тип публикации: статья из журнала
Год издания: 2014
Идентификатор DOI: 10.1134/S1061934814050128
Ключевые слова: ion chromatography, fluoride ions, urinary stone disease, urinary stones, fluoride ions, ion chromatography, urinary stone disease, urinary stones, Chromatography, Deionized water, Ion chromatography, Negative ions, Water filtration, Anion exchange columns, Average concentration, Calcium and magnesiums, Chromatographic determination, Elevated concentrations, Fluoride ion, Quantitative determinations, Urinary stones, Fluorine compounds
Аннотация: A method of the ion chromatographic determination of fluoride ions in urinary stones has been developed. Sample preparation of solid mineral-organic samples includes dissolution in concentrated hydrochloric acid, dilution with deionized water, and the elimination of excess calcium and magnesium cations by adding a KU-2 sulfo cation exchanger in the H-form to samples and filtration through a membrane filter. Anions were separated on a Shim-pack IC-AIS anion-exchange column (100 x 4.6 mm) with elution with a mixture of 2.0 mM phthalic acid and 1.2 mM sodium hydroxide (pH 3.5). The linearity range of the fluoride ions in the obtained solutions of urinary stones with conductometric detection was 0.01-300 mg/L, the limit of detection calculated by the 3s-test was 0.004 mg/L. The quantitative determination of fluoride ions in 20 samples of urinary stones was performed; in 80% of cases the presence of fluorides in the stones at a level from 0.01 to 4 mg/g of the stone was detected. The average concentration of the fluoride ions was 0.3 mg/g of stone. For 20% of the samples an elevated concentration of fluoride ions compared to the average one was found.
Журнал: JOURNAL OF ANALYTICAL CHEMISTRY
Выпуск журнала: Vol. 69, Is. 5
Номера страниц: 474-479
ISSN журнала: 10619348
Место издания: NEW YORK
Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER
Информация о публикациях загружается с сайта службы поддержки публикационной активности СФУ. Сообщите, если заметили неточности.