Solenoid micropump-based flow system for generalized calibration strategy

Marcin Wieczorek; Paweł Kościelniak; Paweł Swit; Justyna Paluch; Joanna Kozak

doi:10.1016/j.talanta.2014.04.053

Solenoid micropump-based flow system for generalized calibration strategy

Talanta. 2015 Feb:133:21-6. doi: 10.1016/j.talanta.2014.04.053. Epub 2014 Apr 28.

Authors

Marcin Wieczorek¹, Paweł Kościelniak², Paweł Swit², Justyna Paluch², Joanna Kozak²

Affiliations

¹ Jagiellonian University, Faculty of Chemistry, Department of Analytical Chemistry, Ingardena 3, 30-060 Krakow, Poland. Electronic address: marcin.wieczorek@uj.edu.pl.
² Jagiellonian University, Faculty of Chemistry, Department of Analytical Chemistry, Ingardena 3, 30-060 Krakow, Poland.

PMID: 25435221
DOI: 10.1016/j.talanta.2014.04.053

Abstract

Generalized calibration strategy (GCS) is one of the innovative approaches aimed at verification and improvement of accuracy of analytical determinations. It combines in a single procedure the interpolative and the extrapolative calibration approaches along with stepwise dilution of a sample with the use of a dedicated flow system. In the paper a simple solenoid micropump-based flow system designed for implementation of GCS has been described. The manifold consists of several modules fully operated by a computer and connected with each other in a properly designed network. Its performance and usefulness were tested on determination of calcium by FAAS in synthetic and natural samples containing strong interferents. It was shown how GCS can serve for detection, examination and elimination of the interference effects. It was demonstrated that the designed manifold enabled to perform GCS procedure with very good precision, in short time and with very low standard, sample and reagent consumption.

Keywords: Analytical calibration; Atomic absorption spectrometry; Flow analysis; Generalized calibration strategy.