6533b857fe1ef96bd12b4d71

RESEARCH PRODUCT

The generalized H-point standard-additions method to determine analytes present in two different chemical forms in unknown matrix samples. Part I. General considerations

Pilar Campíns-falcóLuis Antonio Tortajada-genaroFrancisco Bosch-reigF. Blasco-gómez

subject

Systematic errorAnalyteInternal standardChemistrySample (material)Analytical chemistryBiochemistryAnalytical ChemistryMatrix (chemical analysis)ChemometricsStandard additionElectrochemistryEnvironmental ChemistryPoint (geometry)Spectroscopy

description

This paper shows how the generalized H-point standard-additions method (GHPSAM) can be used to obtain the total concentration or concentrations of different chemical forms of an analyte when the matrix of the sample is completely unknown. The spectral regions where the interferent behaviour can be considered as linear are found and the analyte concentration free from bias error is estimated. This paper includes the already published features of the GHPSAM and a new modification of this method which allows the simultaneous determination of two chemical forms of an analyte in a sample.

https://doi.org/10.1039/a909642f