Author/Authors :
Ghoochani، Mahboobeh نويسنده Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran , , Shekoohiyan، Sakine نويسنده Department of Environmental Research, Center for Social Determinants in Health Promotion, Hormozgan University of Medical Sciences, Bandar-Abbas, Iran , , Yunesian، Masoud نويسنده Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran , , Nazmara، Shahrokh نويسنده 1Center for Environmental Research and Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran , , Mahvi، Amir Hossein نويسنده Department of Environmental Health Engineering, School of Health; National Institute of Health Research; Center for Solid Waste Research, Institute fo ,
Abstract :
To determine aluminum and zinc levels in black tea cultivated in north of Iran, 105 black tea samples were collected
from the tea growing regions of Guilan and Mazandaran provinces and were analyzed for Al and Zn concentration of
tea infusion. Contents of all elements were analyzed three times separately by using an Inductively Coupled Plasma
Atomic Emission Spectrometry (ICP - AES). The solubility of Al and Zn in infusions at 5, 15 and 60 min with boiling
water showed that the mean level of Al in the third infusion was the highest (262.09 mg/kg) and in the first infusion
was the lowest (169.40 mg/kg). The mean level of Zn in the third infusion was the highest (51.40 mg/kg) and in the
second infusion was the lowest (48.33 mg/kg). The analysis of results also showed that the location factor influences
the contents of these metals at different infusions.
