METHOD FOR DETECTING ANTIMONY IN SEWAGE WATER Russian patent published in 2008 - IPC G01N33/18 G01N31/22 G01N21/78 G01N21/27 

FIELD: analytical chemistry and ecology, in particular, method for determining micro-concentrations of antimony in water.

SUBSTANCE: method includes preparation of analyzed sample by concentrating analyzed solution, which contains antimony, to the state of solid residual, dissolution of dry residual in 3,5-4,0 M hydrochloric acid, placement of prepared sample in a solution which contains 30-40% of potassium iodide, 10-15% solution of ascorbic acid, aging of resulting mixture over 15-25 minutes and addition of metallic zinc, distillation of resulting product by letting it through absorbing solution of partially oxidized diphenyl carbazide until the color of absorbing solution stops changing, photometry of absorbing solution.

EFFECT: increased selectivity and sensitivity of analysis.

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