The sorption-chromaticity determination of Fe(III) in the waters of the galvanic production
https://doi.org/10.20914/2310-1202-2017-1-215-221
Abstract
Developed out express Sorption-colorimetric methods for the determination of iron in water, based on the sorption concentration of detecting component of the solution impregnated in the polyurethane foam, the formation on the surface of a colored compound and then its definition in the sorbent matrix by measuring color intensity or chromaticity characteristics. The first method is based on determining the agitation of the sample solution with a tablet impregnated with PPU known mass, from which the air bubbles are removed, the second dynamic – by sampling by suction solution in the analytical cartridge impregnated with PPU. Discoloration polyurethane indicates the presence of iron (III) in water, and its content was determined by comparing the color intensity of foam tablets previously prepared color chart or chromaticity characteristics comparing analyte and standard solutions. The conditions of sorption-photometric analysis: the concentration of the photometric reagent impregnated in the foam, the degree of loading it impregnant, the phases of contact, the acidity of the environment. When using analytical cartridges lower limit of detection is 2 times higher, and the measurement error to 3.5% lower than with the tablets. The proposed test methods using polyurethane enable to carry out the analysis of wash water and the total flow of galvanizing plant before and after neutralization station “on the spot”, without the use of sophisticated instruments and highly skilled operator.
About the Authors
P. T. Sukhanov
Voronezh state university of engineering technologies
Russian Federation
doctor of chemical sciences professor, physical and analytical chemistry department, Revolution Av., 19 Voronezh, 394036, Russia
Russian Federation
doctor of chemical sciences professor, physical and analytical chemistry department, Revolution Av., 19 Voronezh, 394036, Russia
S. S. Kalinkina
Voronezh state university of engineering technologies
associate professor, physical and analytical chemistry department, Revolution Av., 19 Voronezh, 394036, Russia
associate professor, physical and analytical chemistry department, Revolution Av., 19 Voronezh, 394036, Russia
K. K. Serdyukova
Voronezh state university of engineering technologies
student, physical and analytical chemistry department, Revolution Av., 19 Voronezh, 394036, Russia
student, physical and analytical chemistry department, Revolution Av., 19 Voronezh, 394036, Russia
A. A. Il'in
Voronezh state university of engineering technologies
graduate student, physical and analytical chemistry department, Revolution Av., 19 Voronezh, 394036, Russia
graduate student, physical and analytical chemistry department, Revolution Av., 19 Voronezh, 394036, Russia
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Review
For citations:
Sukhanov P.T., Kalinkina S.S., Serdyukova K.K., Il'in A.A. The sorption-chromaticity determination of Fe(III) in the waters of the galvanic production. Proceedings of the Voronezh State University of Engineering Technologies. 2017;79(1):215-221. (In Russ.) https://doi.org/10.20914/2310-1202-2017-1-215-221
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