Determination of the Total Trace Elements in Natural Waters by the Sorption–Atomic Absorption Method with the Fractional Evaporation of Concentrates in a Crucible Atomizer

Abstract

A sorption–atomic absorption method was developed for the determination of the total elements in natural waters; the method includes the simultaneous preconcentration of dissolved and suspended forms directly in a multifunctional crucible atomizer filled with the diethylenetriaminetetraacetate sorbent. Elements were determined in the resulting complex concentrate using the fractional evaporation of the solid matrix and the condensation of analytes in the working volume of a crucible atomizer. The evaporation and atomization of the “secondary” condensate were performed independently. It was demonstrated that the proposed approach decreases the effect of the matrix composition and improves the performance characteristics of the determination of elements in waters.