Overview
This study measured essential and toxic elements in eight black tea products sold in Turkiye, including dry leaves and prepared infusions. It is routeable for tea because the source separates dry-leaf and infusion concentrations.
Key numbers
- Dry leaves contained Al 12.6-27.0 mg/g and Pb 21.0-39.0 ug/g.
- Dry leaves also contained Mg 523.0-1421.0 ug/g and Fe 263.1-445.5 ug/g; As and Cd were reported at lower levels than Al and Pb.
- Infusions contained Al 0.5-1.0 mg/g, Mg 88.5-413.4 ug/g, Fe 32.1-70.0 ug/g, Cu 13.5-17.8 ug/g, and Zn 9.4-16.9 ug/g.
- Infusion toxic-element ranges were As 0.1-0.3 ug/g and Pb 0.1-0.5 ug/g; Cd was below the limit of detection in all infusions.
- The authors reported THQ and hazard index values below 1. Lead ILCR values were below 1e-6, while arsenic ILCR values were between 1e-6 and 1e-4.
Methods
The source analyzes dry black tea leaves and tea infusions separately. This page preserves the source’s dry-leaf versus infusion basis rather than combining them.
Implications
The source supports tea occurrence context for Turkiye-market black tea and shows that dry-leaf concentrations and infusion concentrations are not interchangeable. It can route to both true-tea product pages and tea-infusion context with basis metadata.
Related evidence
Update history
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