Determination of arsenic in urine and feces by dry ashing, atomic absorption spectrometry
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A dry ashing flameless atomic absorption procedure was used to determine fish-arsenic in human urine and feces. Samples were dry ashed with Mg(NO3)2--MgO and dissolved in 6N HCl. Arsine was generated by the addition of NaBH4 and swept into a thermally heated s... ...
