Abraheem et al. 2022 - Lead and cadmium in Libyan tea and coffee
This study measured lead and cadmium in tea and coffee samples circulating in Tripoli, Libya. It is routeable for coffee and tea occurrence evidence because it reports concentration ranges and means in mg/kg for both beverage commodities.
Key numbers
- The study analyzed 17 tea samples and 11 coffee samples by atomic absorption spectroscopy.
- Tea cadmium ranged from 0.037 +/- 0.006 to 0.260 +/- 0.017 mg/kg, with an overall mean of 0.119 +/- 0.054 mg/kg.
- Tea lead ranged from 0.187 +/- 0.002 to 2.153 +/- 0.012 mg/kg, with an overall mean of 1.118 +/- 0.612 mg/kg.
- Coffee lead ranged from 1.23 to 1.62 mg/kg for most samples, with one lower sample at 0.271 +/- 0.002 mg/kg; the overall mean was 1.277 +/- 0.358 mg/kg.
- Coffee cadmium ranged from 0.022 to 0.064 mg/kg, with a mean of 0.0514 +/- 0.0012 mg/kg.
Methods
Samples were digested and analyzed by atomic absorption spectroscopy for Pb and Cd. The paper reports commodity-specific sample counts and concentration units as mg/kg.
Implications
The source supports occurrence evidence for Pb and Cd in coffee and true-tea products sold in a Libyan market. It should be used as market-specific evidence rather than silently pooled with US or EU retail-market data.
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Verification notes
The source table identifies sampled products by retail names. This page omits those names under the brand firewall and reports category-level ranges and means only.
Page history
The five most recent substantive edits to this page. The full version history lives in git; when DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.