The quality and pollutant accumulation status of aquatic products in Shiziyang River of Humen Mouth

Jitimen and Yamen Mouths in the Pearl River were studied. In the residue items for Cu

Pb

Cd of muscular tissue in aquatic economical animal organisms

the total mean values of residue contents and biological concentration factors(BCF)are showed in the order: mollusc >fish>shrimp. The values of residue contents and BCF for Cr and As are listed in the order: mollusc>shrimp>fish. In the items of Zn and Total Hg

fish displayed the highest values for the residue and BCF. The contents for Cu

Pb

Cd

Zn

Cr

As in aquatic products in the three estuaries were far lower than the limits of the Marine Organism Pollution Assessment Standard. Only one sample residue value of total Hg excelled the standard limit. It showed that the quality of aquatic products in the areas was considered in a good status