Project Description

Dry powdered food product (marine algae) tested for total iodine content by the method of Fischer et al. (J. Assoc. Off. Anal. Chem. 69(4), 687 - 689 (1986)). The method described uses a ternary acid (HClO4/HNO3/H2SO4) digestion that is initially conducted under reflux conditions to retain volatile forms of iodine. Subsequent analysis monitors the catalytic effect of iodide on the reaction between As(III) and Ce(IV).