[A method of mercapto cotton/Ag-DDC determination for inorganic arsenic in seafood]

A method of mercapto cotton/Ag-DDC determination for inorganic arsenic in seafood was developed. It is reliable and simple--The coefficients of variation for 1.0-5.0 micrograms As (III), kelp and dried small shrimp samples are 1.5-5.6%, 4.4% and 9.5%, respectively. The recoveries of kelp and dried small shrimp samples are 82.0-102.6% and 83.0-97.1%, respectively. As compared with the results of the extraction method (Government standard) in the determination of inorganic arsenic levels in 10 kinds of seafood, the results of this simple method showed no significant difference.