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S. Table, Comparison of THg concentrations obtained by the developed speciation method (SSE) and AMA-254 analyses in feather samples. N for SSE method is referred to number of extractions (analysed in triplicate)

A. Thg, 254 (ng g -1 ) Rec (%) as

S. Figure, Control charts of measured MeHg and THg concentrations for reference materials NIES-13 and P-KP for each analytical session