Determination of lead, copper, zinc, magnesium, calcium and iron in fresh eggs by atomic absorption spectrometry

Abstract In this study, lead, copper and zinc, calcium, magnesium and iron in fresh egg samples have been determined by electrothermal and flame atomic absorption spectrometry (ETAAS–FAAS) with Zeeman-effect background correction. Y+Pd+citric acid (CA) has been found a powerful modifier mixture for the determination of Pb, Cu and Zn. Maximum pyrolysis and optimum atomization temperatures of analyte elements were determined in the presence or absence of modifiers. Atomization and background profiles of the analyte elements studied in the presence of Y+Pd+CA have been compared with other modifiers such as Mg+Pd and Mg+PO43−. The detection limits obtained were 1.88, 0.71, 0.03 ng/ml for Pb, Cu and Zn in ETAAS, 14.0, 32.3, 68.6 and 18.9 ng/ml for Mg, Ca, Fe and Zn in FAAS, respectively. The reliability of the measurements was confirmed by analysing a certified reference material, NIST, whole egg powder 8415. The percent recovery ranges of analytes were from 96.7 to 101%.

[1]  M. Hernández-Córdoba,et al.  Rapid determination of selenium, lead and cadmium in baby food samples using electrothermal atomic absorption spectrometry and slurry atomization , 2000 .

[2]  A. Türker,et al.  Determination of lead in cookies by electrothermal atomic absorption spectrometry with various chemical modifiers , 2000 .

[3]  V. Slaveykova,et al.  Chemical modification in electrothermal atomic absorption spectrometry , 1991 .

[4]  Baht Rv,et al.  Monitoring and assessment of dietary exposure to chemical contaminants. , 1997 .

[5]  A. Alegría,et al.  Direct determination of lead in human milk by electrothermal atomic absorption spectrometry , 1999 .

[6]  V. Slaveykova,et al.  Study of some tungsten-containing chemical modifiers in graphite-furnace atomic-absorption spectrometry , 1990 .

[7]  C. Cabrera,et al.  Lead and cadmium contamination in dairy products and its repercussion on total dietary intake , 1995 .

[8]  A. Detcheva,et al.  Study of some palladium-containing chemical modifiers in graphite furnace atomic absorption spectrometry , 1995 .

[9]  P. Oliveira,et al.  Simultaneous determination of Cd and Pb in foodstuffs by electrothermal atomic absorption spectrometry , 2000 .

[10]  H. Lewerenz,et al.  Joint FAO/WHO food standards programme, codex alimentarius commission: List of additives evaluated for their safety‐in‐use in food. First Series. 88 Seiten. FAO and WHO, 1973. Preis: 1.— $ , 1976 .

[11]  B. Welz,et al.  Palladium and magnesium nitrates, a more universal modifier for graphite furnace atomic absorption spectrometry , 1986 .

[12]  S. Xiao-quan,et al.  The reduction and elimination of matrix interferences in graphite furnace atomic absorption spectrometry , 1987 .

[13]  J. R. Mudakavi,et al.  Palladium nitrate–magnesium nitrate modifier for electrothermal atomic absorption spectrometry. Part 5. Performance for the determination of 21 elements , 1992 .

[14]  A. Türker,et al.  Determination of bismuth, indium and lead in geological and sea-water samples by electrothermal atomic absorption spectrometry with nickel-containing chemical modifiers , 1999 .

[15]  S. Xiao-quan,et al.  IS PALLADIUM OR PALLADIUM-ASCORBIC ACID OR PALLADIUM-MAGNESIUM NITRATE A MORE UNIVERSAL CHEMICAL MODIFIER FOR ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY , 1995 .

[16]  P. Parsons,et al.  Accurate and precise measurements of lead in bone using electrothermal atomic absorption spectrometry with Zeeman-effect background correction , 1996 .

[17]  S. Xiao-quan,et al.  Reports of meetings , 1965 .