title: Levels of Trace Elements in Black Teas Commercialized in Saudi Arabia Using Inductively Coupled Plasma Mass Spectrometry.
abstract: The present work has been demonstrated a developed method for the determination of Mn, Fe, Co, Ni, Cu, Zn, Mo, Cd, As, Cr, Pb, and V in different types of black teas collected from Saudi Arabia market using inductively coupled plasma mass spectrometry (ICP-MS). Each sample represents a well-mixed combination of ten packets from the same type collected from the market. Detection limits in ng g-1were 76.06, 166.03, 5.94, 2.94, 18.29, 18.29, 9.00, 0.48, 0.48, 7.67, 3.07, and 4.21 for Mn, Fe, Co, Ni, Cu, Zn, Mo, Cd, As, Cr, Pb, and V, respectively. In order to validate the developed method, a certified reference material of green tea was analyzed. Further comparison with the results obtained from high-resolution continuum source atomic absorption spectrometry (HR-CS-AAS) was demonstrated. The obtained good agreement confirms the validity of the investigated method. Fortunately, the concentrations of the heavy metals locate on the range of the international values. The highest metal content was found in Al-Rabee tea, and this type results should be confirmed by using a large number of samples in order to have satisfied and confirmed statistical analysis results.
authors.affiliation: Physics Department, Faculty of Science, Taif University, P.O. Box 888, Taif, 21974, Saudi Arabia. shaltout_a@hotmail.com.|Spectroscopy Department, Physics Division, National Research Center, El-Behooth Str., 12622 Dokki, Cairo, Egypt. shaltout_a@hotmail.com.
authors.forename: Abdallah A
authors.initials: AA
authors.lastname: Shaltout
authors.affiliation: Department of Zoology, Science College, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.|Electron Microscope and Thin Films Department, National Research Center (NRC), El-Behooth Street, 12622, Dokki, Cairo, Egypt.
authors.forename: Omar H
authors.initials: OH
authors.lastname: Abd-Elkader
mesh_terms: D005504:Food Analysis; D008670:Metals / Q000032:analysis*; D012529:Saudi Arabia; D013662:Tea / Q000737:chemistry*; D014131:Trace Elements / Q000032:analysis*
chemical_list: D008670:Metals; D013662:Tea; D014131:Trace Elements
keywords: Black tea; Elemental analysis; ICP-MS