Heavy metal residues in water and sediment in outer Songkhla lake
1996
Passakorn Thompolkrang | Kanit Chaiyakam
Survey on the heavy metal in water and sediment in the outer Songkhla lake was conducted during February to August 1995. The study area was divided into 9 stations. The Ag, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn in water and Cd, Cu, Fe, Pb, Zn in sediment were determined. The results showed that the average contents of Cd, Co, Mn, Ni, and Pb in the water have significantly different (P0.05). The dissolved heavy metals concentration that exceed the standard levels were Cd, Cu, Fe, and Pb having average concentration of 0.035+-0.019, 0.067+-0.014, 0.467+-0.165 and 0.226+-0.102 ppm respectively. The average contents of heavy metal in sediment of all stations showed significantly different (P0.05) except for Fe. The average concentrations were 0.31+-0.158, 7.09+-3.621, 656.5+-98.5, 20.88+-7.795 and 24.79+-9.705 mg/kg (dry weight) respectively.
显示更多 [+] 显示较少 [-]