Determination of heavy metal contents in human colostrum samples by electrothermal atomic absorption spectrophotometry

Citation
S. Turan et al., Determination of heavy metal contents in human colostrum samples by electrothermal atomic absorption spectrophotometry, J TROP PEDI, 47(2), 2001, pp. 81-85
Citations number
29
Categorie Soggetti
Pediatrics
Journal title
JOURNAL OF TROPICAL PEDIATRICS
ISSN journal
01426338 → ACNP
Volume
47
Issue
2
Year of publication
2001
Pages
81 - 85
Database
ISI
SICI code
0142-6338(200104)47:2<81:DOHMCI>2.0.ZU;2-1
Abstract
Determination of lead, cadmium, nickel, chromium, manganese and copper leve ls in colostrum samples (n = 30), collected from middle-class mothers, was carried out by electrothermal atomic absorption spectrophotometer (ETAAS) w ith Zeeman effect background correction using a tungsten-palladium-citric a cid chemical modifier mixture. A wet-ashing procedure was applied to dissol ve the samples and to remove the fat. The graphite furnace temperature prog ramme for analytes determined by ETAAS was studied, and the optimum pyrolys is temperatures of Pb, Cd, Ni, Cr, Mn and Cu were determined in the presenc e of the modifier mixture. Detection limits of Pb, Cd, Cu, Mn and Cr were d etermined using a modifier mixture solution. Zinc and iron levels were dete rmined by Zeeman flame atomic absorption spectrometer (F-AAS). Heavy metal levels (mean values) found in colostrum samples were 14.6 mug/l of Pb, 2.8 mug/l of Cd, 27.8 mug/l of Ni, 8.6 mug/l of Cr, 43.2 mug/l of Mn, 278 mug/l of Cu, 12.9 mg/l of Zu, and 3.5 mg/l of Fe, These metal levels were compar ed with results from other studies in different countries.