Account of Matrix Effects in the Spectrometric Determination of Trace Elements Using the Single-Point Standard Addition Method

Possibilities of taking into account matrix effects in the determination of trace elements by electrothermal atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry using the single-point standard addition method are studied. It was found that the linearization of the conversion function makes it possible to apply such an approach over the entire calibration range. Using an example of determining ( n × 10 –2 –10 n ) μg/g As, Pb, Sb, Cd, Se, and Te in silty soil samples, it was shown that the method used simplifies the analysis procedure and reduces the systematic error of the determination.