Levels of Cu, Zn, Pb, and Cd in the leaves of the tea plant
The range for concentration of Cu, Zn, Pb, and Cd was 2.34–25.26, 43.9–71.3 µg/g, which is too low to be detected by the analytical techniques and 0.2–1., respectively. Concentration of Cu, Zn, and Pb were lower than those found in our study and concentration of Cd was higher than the concentration obtained in our study.