6533b82bfe1ef96bd128d706

RESEARCH PRODUCT

Determination of Cd, Cu, Pb and Zn content of infant formulas by differential pulse anodic stripping voltammetry (DPASV).

María J. EsteveRosaura FarréA. Frígola

subject

Accuracy and precisionAnalytical chemistrychemistry.chemical_elementZincNitric Acidlaw.inventionlawSpectrophotometryElectrochemistrymedicineHumansPolarographyCadmiummedicine.diagnostic_testSpectrophotometry AtomicInfantCopperAnodic stripping voltammetrychemistryMetalsSpainIndicators and ReagentsInfant FoodAtomic absorption spectroscopyPolarographyFood Science

description

The differential pulse anodic stripping voltammetry (DPASV) method described is based on the one reported by Hasse et al., but adapted to normal laboratory conditions. The values obtained in the estimation of the analytical parameters (linearity, detection and quantification limits, precision and accuracy) show that in the conditions described the method is sensitive enough, reliable and useful for determining these elements in infant formulas. A comparison between DPASV and atomic absorption spectroscopy (AAS) methods in the conditions described here shows that the former is less sensitive but that they are similar in precision. The cadmium, copper, lead and zinc contents of different types of infant formulas marketed in Spain are reported.

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