ความเข้มข้นของปรอทในเนื้อปลาช่อนทะเล (Rachycentron canadus) บริเวณอ่าวไทยและทะเลอันดามัน / รุจิรา พงศ์พลูทอง = Mercury concentration in tissues of cobia (Rachycentron canadus) from the Gulf of Thailand and Andaman Sea / Rujira Pongplutong
The mercury concentrations in dorsal muscle tissues samples of cobia (Rachycentron canadus) caught from the Gulf of Thailand and Andaman Sea were studied during January to November 1998. Samples were collected from four areas, i.e. UNOCAL nataural gas platforms in the middle of the gulf (Erawan .Platong, Satul and Funan) ; Bangsare coastal area (Chonburi), Kanom district of Nakornsritammarach and the coastal area of Ranong province. Mercury analysis was conducted using cold vapor atomic absorption technique. The mean total mercury of the mentioned areas ware 0.393, 0.080, 0.095 and 0.078 mg./kg. (wet weight) respectively. The samples from UNOCAL platforms had highest mercury concentrations and were significantly different (α = 0.05) from other areas. The positive linear regression between total mercury and the size of cobia were found in fish collected from Bangsare, Kanom, and Ranong but the samples of fish caught from UNOCAL platforms did not show such a regression.