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Separation and analysis of organic‐bound and inorganic arsenic in marine organisms
Author(s) -
Lunde Gulbrand
Publication year - 1973
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740240904
Subject(s) - arsenic , volatilisation , chemistry , inorganic arsenic , environmental chemistry , hydrochloric acid , neutron activation analysis , inorganic chemistry , radiochemistry , organic chemistry
A method for the separation of stable arseno‐organic compounds from inorganic arsenic and the subsequent determination of both forms of arsenic is described. The separation is based on volatilisation of inorganic arsenic as arsenic trichloride by addition of hydrochloric acid to 6.6 N and subsequent removal by distillation at 100 °C. Remaining arsenic is bound in arseno‐organic compounds that are stable under these conditions. Total arsenic in the samples analysed is reduced by 0.5 to 3 parts/million by this treatment. Determination of arsenic was performed by neutron activation and X‐ray fluorescence.