Abstract:

This paper was to find out the background concentration of formaldehyde in fresh seafood through determining the concentration of formaldehyde in usual fresh seafood in Bohai Bay region. [Methods] 222 samples of 4 kinds and 23 species were collected randomly from fishing vessels at Qinhuangdao Port, Tangshan Port and Huanghua Port in Bohai Bay Region from April 2011 to October 2011, which contained 7 kinds of fish, 6 kinds of crustacea, 8 kinds of shellfish and 2 kinds of mollusk. This paper was used acetylacetone spectrophotometry to determine the concentration of formaldehyde. The results showed that there was some content of formaldehyde in all fresh seafood, and the average value was 1.798 mg/kg. The background concentration of formaldehyde in fish was 1.284 mg/kg. The background concentration of formaldehyde in crustacea was 2.950 mg/kg. The background concentration of formaldehyde in shellfish was 1.387 mg/kg. The background concentration of formaldehyde in mollusk was 0.845 mg/kg. There was some background concentration of formaldehyde in fresh seafood. This investigation was to provide sciscientific basis for formulating the limit standard for formaldehyde concentration in seafood and enforcing the law of food hygiene.