Abstract:
The research was aimed at the study on accumulation of Hg in oyster (Saccostrea cucullata), green mussel (Perna viridis) and sediment from 9 provinces on the coast of the Gulf of Thailand and the Andaman Sea (Chonburi province, Chanthaburi province, Samutprakan province, Samutsongkhram province, Prachuabkirikhan province, Suratthani province, Pattani province, Phangnga province and Satun province). The samples were analysed by using Atomic Absorption Spectrophotometer.The results of the study showed that the average concentration of Hg in oyster and green mussel were 0.733+0.170 and 0.199+-0.148 Ug/g dry weight respectively. The highest concentration of Hg in oyster from Phangnga province were 3.954+-1.060 Ug/g dry weight and Hg in green mussel from Satun province was 1.923+-0.615 Ug/g dry weight. The average concentration of Hg in sediment was 0.238+-0.066 Ug/g dry weight. Statistical analysis showed that the accumulation of Hg in both types of bivales at each station was significantly different at 0.05 level. Results of this study revealed that the Hg content in oysters and mussels collected from the Andaman Sea was higher than in those collected from the Gulf of Thailand.