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METHOD FOR EXTRACTIVE SPECTROPHOTOMETRIC DETERMINATION OF SODIUM DODECYLSULPHATE

机译:分光光度法测定十二烷基硫酸钠的方法。

摘要

The invention relates to the field of analytical chemistry, in particular to methods of extractive spectrophotometric determination of sodium dodecylsulphate. The method includes formation of ion associate of sodium dodecylsulphate with organic base, its extraction with organic solvent and following photometering of extracts. Basic dye astraphloxin FF is used as organic base. Non-toxic isoamyl acetate is used as organic solvent. Transformation of ion associate is carried out at the concentration of astraphloxin FF dye of 2·10-5-4·10-5 mol/l and acidity of medium pH 2-9. The method needs no use of toxic extractants and multiple extraction, it provides high sensitivity and selectivity of analysis, makes it possible to carry out determination in the presence of foreign ions.
机译:本发明涉及分析化学领域,尤其涉及萃取分光光度法测定十二烷基硫酸钠的方法。该方法包括用有机碱形成十二烷基硫酸钠的离子缔合体,用有机溶剂萃取,然后对萃取物进行光度测定。碱性染料曲霉毒素FF被用作有机碱。无毒的乙酸异戊酯用作有机溶剂。离子缔合剂的转化是在浓度为2·10-5-4·10-5 mol / l的曲霉毒素FF染料和中等pH值为2-9的酸性下进行的。该方法无需使用有毒的萃取剂即可进行多次萃取,具有很高的灵敏度和选择性,可以在存在外来离子的情况下进行测定。

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