Abstract
The effect produced by the Triton X-100 concentration and ultrasonic treatment time on the value of an analytical signal during the atomic absorption and inductively coupled plasma atomic emission determination of analytes in strata water was studied. When Triton X-100 was used, the sensitivity of atomic absorption analysis grew by 1.5 times for manganese, 1.6 times for zinc, and 1.8 times for cadmium. As a result of atomic absorption analysis with the use of a surfactant, atomization completeness was attained. Using the methods of atomic absorption and inductively coupled plasma atomic emission, the content of manganese, zinc, and cadmium in strata water was determined. The precision of analysis results was improved by using acetyl acetonates of metals, as the reference samples must be similar to the analyzed samples in their chemical composition. Using the standard addition method at a varied water sample volume, the systematic error was shown to be negligible at a relative standard deviation sr of less than 0.03. The consistency of results obtained by two independent methods was estimated by F- and t-criteria. The results were shown to have a uniform variance by the F-cirterion, and the average results could be summarized by the t-criterion. The developed method excluded the use of toxic and expensive reagents to be competitive by the atomic absorption detection limits: cmin for Cd, Mn, and Zn was found to be 0.002 µg/mL.
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Yurchenko, O.I., Chernozhuk, T.V., Kravchenko, O.A. et al. Determination of Zn, Mn, and Cd in Strata Water. J. Water Chem. Technol. 44, 26–30 (2022). https://doi.org/10.3103/S1063455X22010118
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DOI: https://doi.org/10.3103/S1063455X22010118