Elemental Characteristics and Geochemical Significance of Surface Sediment in Jiulong River Estuary

By analysis of the elements of surface sediment from Jiulong River Estuary,the main elements combination characteristics were studied.And the significance of geochemistry was discussed by using the correlation analysis and factor analysis of elements.The result showed that the surface sediments from Jiulong River Estuary had obvious correlation between main element and trace element,and the SiO2 and Al2O3 were the most dominating components in the surface sediments of which maximum value reached 75.36% and 24.27%,respectively.SiO2 showed a negative correlation between most main element and trace element,while Fe2O3,MgO,K2O,MnO,Cu,Co,Ni showed strong positive correlation with Al2O3.Factor analysis showed that surface sediment in this research area came mostly from continental source and biological source,but the main origin was continental source.