Analysis of Pb, Cd and As in Tea Leaves Using Graphite Furnace Atomic Absorption Spectrophotometry
30 Jan 2012

A major challenge in the analysis of tea leaves is the extremely low analyte levels and the very high matrix levels. This note presents graphite furnace atomic absorption spectrophotometry (GFAAS) and the use of longitudinal Zeeman background correction and matrix modifiers to help achieve extremely low detection limits in high matrix samples, showing that GFAAS is indispensible for carrying out such analyses.

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