title: The suitability of the dry ashing procedure for determination of arsenic in marine samples.
abstract: The dry ashing procedure with Mg/(NO3)2/Mgo ashing aid, followed by arsenic determination by colorimetry, has been compared to an X-ray fluorescence method for determination of arsenic in marine samples. Good agreement between these techniques indicated the suitability of the dry ashing, colorimetric procedure for determination of "fish-arsenic". A wet digestion procedure using HNO3-H2SO4-HC104 was also shown to be suitable.
mesh_terms: D000818:Animals; D001151:Arsenic / Q000032:analysis*; D003124:Colorimetry; D033364:Decapoda; D005399:Fishes; D008722:Methods; D013050:Spectrometry, Fluorescence
chemical_list: D001151:Arsenic