Evaluation of trace metals in tea samples from Jeddah and Jazan, Saudi Arabia by atomic absorption spectrometry.
The Cd, Pb, Mn, Zn, Ni, Co, Fe, Cr and Cu content were determined in various teas available in local markets of Jeddah and Jazan, Saudi Arabia. Concentrations of the trace metals were measured after acid digestion using a flame atomic absorption spectrometer. Validation of the digestion procedure was performed by the analysis of a certified reference material. The cadmium, lead, manganese, zinc, nickel, cobalt, iron, chromium and copper concentrations were found in the range of below the detection limit (BDL)--0.7 μg/g, BDL--8.7 μg/g, 48-859 μg/g, 6.6-120 μg/g, BDL--16.9 μg/g, BDL--3.1 μg/g, 46-348 μg/g, BDL--4.9 μg/g and 5.2-21.6 μg/g respectively. The values found in this study were compared with literature values.
Chemistry Department, College of Science, King Saud University, 11451 Riyadh, Kingdom of Saudi Arabia.
Zeid A
ZA
Al-Othman
Erkan
E
Yilmaz
Hamoud M T
HM
Sumayli
Mustafa
M
Soylak
D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis*; D004787:Environmental Pollution / Q000706:statistics & numerical data; D005506:Food Contamination / Q000032:analysis / Q000706:statistics & numerical data*; D008670:Metals / Q000032:analysis*; D012529:Saudi Arabia; D013054:Spectrophotometry, Atomic; D013662:Tea / Q000737:chemistry*
D004785:Environmental Pollutants; D008670:Metals; D013662:Tea