Abstract
Abstract A collaborative study was conducted on two arsenic methods: arsine-molybdenum blue procedure, and silver diethyldithiocarbamate procedure. Fourteen collaborators received six complete sets of the arsenic apparatus (including generator bottles, sulfide absorption tubes, special traps, and an aspirator assembly), two solutions of apple digests, one blank solution, recrystallized silver diethyldithiocarbamate, and directions for the procedure. A minimum of three runs for each procedure was requested; results were reported as ppm As2O3 present in the solution. The results warrant recommendation of both methods as official, first action and as alternative procedures for the determination of arsenic in foods.
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