ENVIRONMENTAL STUDIES: LEVELS OF METAL CONTENTS IN DRINKING WATER AND IN TEA LEAVES COMMERCIALLY AVAILABLE IN EGYPT AND THEIR INFUSIONS | ||||
| Journal of Productivity and Development | ||||
| Article 1, Volume 18, Issue 2, April 2013, Page 115-128 PDF (565.38 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpd.2013.42555 | ||||
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| Authors | ||||
| Akmal Gaballa* 1; Nahed Shehata1; Ahdab El-Maadawy1; Adel Hamouda2 | ||||
| 1Faculty of Specific Education, Zagazig University, Zagazig, Egypt | ||||
| 2Hydro-chemistry Department, Desert Research Center, Egypt | ||||
| Abstract | ||||
| Na, K, Ca, Mg, Mn, Fe, Zn, Cu, Co, Cd, Pb, Ba, Al, B, Cr, Mo, Ni, Sr, V, As, Hg, Se and Sb contents of the used drinking water and commercially available Egyptian tea leaves (Al-Arosa, Lipton, Dilma Black Teas and Dr Life green Tea) and their infusions were analyzed by Inductively coupled plasma spectrometry (ICPS), Flame photometer, and UV/Visible spectrophotometer. The used drinking water was characterized by its low content of metal ions and some metal ions (As, Hg, Se and Sb) were low to be detected. The metal contents of tea leaves were found to be higher than those of tea infusions. In both black tea leaves and their infusions levels of metals (Fe, Co, Cd, B, Cr, Mo, V and Pb) were too low assuring that the commercially available Egyptian tea possess no health risk from toxic elements. The concentrations of metals in the four tea brands were found in the following order; K > Mg > Mn > Zn> Ba > Al > Ni. Conclusively, from these results it could be concluded that drinking tap water and tea brands infusions under investigation are safe for public health and provide an acceptable quantity of mineral and trace elements per day. | ||||
| Keywords | ||||
| Drinking water; Black tea; green tea; Tea infusion; Heavy metals; Inductively Coupled Plasma Spectrophotometer (ICPS) | ||||
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