Determination of Cd, Cu, Pb and Zn content of infant formulas by differential pulse anodic stripping voltammetry (DPASV)
✍ Scribed by Esteve, M. J. ;Farré, R. ;Frigola, A.
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 420 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0027-769X
No coin nor oath required. For personal study only.
✦ Synopsis
Thc differential pulse anodic stripping voltammetry (DPASV) method described is based on the one reported by HASSF et al., but adapted to normal laboratory conditions. Thc values obtained in the estimation of the analytical parameters (linearity, dctection and quantification limits, precision and accuracy) show that in the conditions described thc 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.
Zusammenfassung
Bestimmung des Gehaltes von Cd, Cu, Pb und %ink in Kindernahrung durch differentielle Pulsinversvoltammetrie (DPASV) Die beschriebene Methode basiert auf der von HASSE u. a. veroffentlichten; sie wurdc aber an iibliche Laborbcdingungen angepaRt. Die Bestimmung der analytischen Parameter (Linearitit, Nachwcis-und Bestimmungsgrenzen, relative Standardabweichungen) zeigt, daR die M ethode unter den beschriebenen Bedingungen cmpfindlich genug, zuverlHssig und brauchbar fur die Bestimmung dieser Elcmente in Kindernahrung ist. Ein Vergleich zwischen der DPASV und der Atomabsoi-ptionsspektroskopie unter unseren Bedingungen zeigt, dal3 die erstere Methode weniger empfindlich, aber Hhnlich hinsichtlich der Genauigkcit ist. Die Gehalte in Spanien gchandelter Kindernahrung an Cd, Cu, Pb und Zn werden mitgeteilt.
📜 SIMILAR VOLUMES
## Abstract A combination of sensitive and selective voltammetric methods, namely differential pulse (DPASV) and fundamental and second harmonic alternating current anodic stripping voltammetry (ACASV) were found to be very suitable techniques for the simultaneous determination of metal species hav