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Crossing Borders: A Multidisciplinary Journal of Undergraduate Scholarship
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Screening For Heavy Metals In Tea Leaves From Bangladesh Using X-Ray Fluorescence, Amber Wolf
Screening For Heavy Metals In Tea Leaves From Bangladesh Using X-Ray Fluorescence, Amber Wolf
Crossing Borders: A Multidisciplinary Journal of Undergraduate Scholarship
Trace metal contamination is a global health issue. This study evaluated boxed and loose-leaf tea from Bangladesh using a Handheld X-ray Fluorescence (XRF) analyzer for lead and other metals to rapidly screen tea as a potential hot spot of heavy metal exposure. Of the 33 elements measured, several priority pollutants were below the limit of detection (LOD) in all samples, including lead (LOD 2.17 mg/kg) and arsenic (LOD 1.68 mg/kg). Loose-leaf tea samples had higher copper (1.5-fold), zinc (1.3-fold), and manganese (1.8-fold) concentrations compared to boxed tea. Estimated daily intake (EDI) of lead from tea was calculated using three assumed …