ArticleScientific reports2025
Occurrence, exposure and health risk assessment of heavy metals in green tea samples cultivated in Hangzhou area.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The concentration of heavy metals in 120 green tea samples grown in Hangzhou area were investigated by inductively coupled plasma mass spectrometry (ICP-MS). Except for mercury (Hg) (69.2%), Sb (98.3%), Se (93.3%) and Sn (94.2%), the detection rate of the other 11 elements were all 100.0%. The mean concentration of heavy metals in tea showed the following order: manganese (Mn) > aluminum (Al) > barium (Ba) > copper (Cu) > nickel (Ni) > chromium (Cr) > lead (Pb) > tin (Sn) > lithium (Li) > vanadium (V) > selenium (Se) > arsenic (As),> cadmium (Cd) > antimony (Sb) > mercury (Hg). Mn was the highest element found in the tea samples with a concentration ranging from 202.00 to 2010.00 mg/kg and a mean of 836.00 mg/kg. The lowest element was Hg, with a concentration ranging from ND to 0.017 mg/kg and the mean concentration was 0.0033 mg/kg. And all the 120 samples did not exceed the standard limit value of heavy metal. The pollution level of heavy metals indicated that the single pollution index and comprehensive pollution index of green tea produced in Hangzhou area are far below 0.7, which belong to the clean and safety level. Health risk of inhabitant via consuming green tea was conducted and the HI value was 0.42, less than 1, which indicates that these chemicals pose no risk to human health in Hangzhou area.
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