FIELD: chemistry.
SUBSTANCE: method involves extraction using as a complexing agent and an extractant a mixture of antipyrine and sulphosalicylic acid, taken in molar ratio of 3:2. Extraction is carried out in the presence of urotropin in the solution in amount of 0.05-0.15 g. After extraction, concentration of tin (II) and (IV) ions determined using a complexometric technique.
EFFECT: full extraction of tin ions, safe working conditions, simple and cheap analysis process.
2 cl, 1 dwg, 1 ex
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