Related Experiment Video
Updated: Apr 30, 2026

Source and Route of Pyrrolizidine Alkaloid Contamination in Tea Samples
Published on: September 28, 2022
Heavy metal content of black teas consumed in Iran
Ebrahim Falahi1, Roshanak Hedaiati
1a Department of Nutrition , Lorestan University of Medical Sciences , Khorramabad , Islamic Republic of Iran.
Abstract:
Tea (Camellia sinensis) is the most widely consumed beverage in several parts of the world. Tea consumption is a major component of the traditional Iranian diet; however, limited data are available indicating heavy metals content of this beverage. This study aimed to assess concentrations of heavy metals, including copper, lead, cadmium, chromium and mercury as well as minerals like zinc and iron in black tea samples. Atomic absorption spectrometry was used to determine the elements of interest in 20 brands of black tea that are widely consumed among Iranians. The mean concentrations were 28.8 for Zn, 135.2 for Fe, 15.9 for Cu and 8.2 for Cr (mg kg⁻¹) and 134.5 for Cd, 209.5 for Pb and 40 for Hg (µg kg⁻¹). It is concluded that tea consumption can be a possible source of some heavy metal intake for the Iranian population.
More Related Videos
10:35Study on the Metabolism of Six Systemic Insecticides in a Newly Established Cell Suspension Culture Derived from Tea Camellia Sinensis L. Leaves
Published on: June 15, 2019
04:36Author Spotlight: Exploring Tea Aroma Using Solvent-Assisted Flavor Evaporation Technique
Published on: May 26, 2023
Related Concept Videos
Acid Mine Drainage
Microbial Leaching
Extraction: Advanced Methods
The Periodic Table and Organismal Elements
Periodic Table Provides Information...
The Periodic Table and Organismal Elements
Microbial Bioremediation of Uranium