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Investigation of Heavy Metal Contents in Infusion Tea Samples of Iran Publisher



Parviz M1 ; Eshghi N2 ; Asadi S3 ; Teimoory H4 ; Rezaei M5
Authors
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Authors Affiliations
  1. 1. Department of Animal Science and Veterinary, College of Agriculture, Saveh Branch, Islamic Azad University, Saveh, Iran
  2. 2. Department of Microbiology, College of Science, Saveh Branch, Islamic Azad University, Saveh, Iran
  3. 3. Department of Food and Drug, Food and Hygiene Control Laboratory, Arak University of Medical Sciences, Arak, Iran
  4. 4. Department of Natural Resources Engineering-Environment-Habitats and Biodiversity, Tehran Sciences and Research Branch, Islamic Azad University, Tehran, Iran
  5. 5. Department of Food Safety and Hygiene, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

Source: Toxin Reviews Published:2015


Abstract

The current study aimed to determine the concentrations of five heavy metals in samples of infused tea from teas available in Iran. Eighty-one samples were divided into the three groups of bulk, packed, and tea bag samples. The investigation was performed using the inductively coupled plasma-optic emission spectrometry technique. The estimated daily intake of heavy metals was compared with the allowable daily intake (ADI), and the means were compared with the limits allowed by national Iranian standards. Results showed that infusion time had no effect on heavy metal content, except for Pb in bulk samples, and all means were within standard limits. Monitoring heavy metal content is still very important, because these metals are present in soils due to increased industrial activity and the use of pesticides and fertilizers. © 2015 Taylor & Francis.
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