METHODS AND OBJECTS OF CHEMICAL ANALYSIS ISSN title: "Metody i obʺekty himičeskogo analiza" An international journal devoted to all aspects of Analytical chemistry ISSN 2413-6166 (Online), ISSN 1991-0290 (Print)
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ANALYTICAL CONTROL OF WASTEWATER ON THE IRON CONTENT ON THE RESULTS OF AAS AND VOLTAM-METRY

A.E. VASYUKOV, V.M. LOBOYCHENKO, V.I. UBERMAN, O.I. YURCHENKO

Problems of optimal conformance of methodology of analytical chemistry with the requirements of regulatory metrology and ecological regulation under the analytical monitoring of environmental pollu-tions have been considered at the example of determination of iron in drain waters. Methodic and metro-logical characteristics of selection of duplicate samples, drain water sample preparation, method of de-termination of iron bulk composition its suspended and dissolved forms were discussed. It has been es-tablished that concentrations of dissolved forms of iron in investigated drain waters don’t exceed com-mercial fishing standard and and that their range from 0.028 to 0.064 mg/l that is 4…40 times smaller than bulk composition of iron. AAS method which allows determining total concentration of iron (II) and iron(III) should be admitted as acceptable for control of iron content of drain waters.

Key words: Analytical control of wastewater, dissolved forms of iron, the total content of iron, voltamme-try, AAS, sample preparation, environmental regulation, legal metrology, chemical analysis

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