Development of a Method for Measuring the Content of Extractables Mn(II) Forms in Soils Using Periodate Ions for Environmental Monitoring Purposes

Abstract

The article presents the results of the development and preparation for metrological certification of methods for measuring the content of extractable forms of manganese (II) in soils, establishing its minimum detectable concentrations. It is established that the use of potassium periodate has a number of significant advantages: the determination procedure is less toxic compared to the use of formaldoxime, solutions have a more stable color over time, it is not necessary to eliminate the interfering influence of chloride ions. The experiment is carried out to establish the metrological characteristics (indicators of precision, accuracy, and precision) with the use of work samples of different soil types. The metrological characteristics of the results are not worse than those regulated by the regulatory document for the certified method.