Separation and analysis of organic-bound and inorganic arsenic in marine organisms

✍ Scribed by Gulbrand Lunde

• Publisher: John Wiley and Sons
• Year: 1973
• Tongue: English
• Weight: 333 KB
• Volume: 24
• Category: Article
• ISSN: 0022-5142
• DOI: 10.1002/jsfa.2740240904

✦ Synopsis

Abstract

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.