Concentrations of DMs in the surface seawater in 2006 are compared to Lena
River Estuary which represents the natural condition, Bristol Channel and Severn
Estuary which represents DMs concentrations in highly polluted region, and past
research of Geum River Estuary, Shihwa lake and Saemangeum. A comparison of the
DMs concentrations of 1999 Saemangeum research and this study shows that the
concentrations of DMs are significantly decreased except the Co and Cd. Their
concentrations are roughly half of the previous values. A trend of lower concentrations
of DMs of this study is easily observed compare to Bristol Channel and Severn
Estuary (Harper, 1991) and Shihwa lake. The higher concentration
in Saemangeum compare to Lena Rriver Estuary informs that the
Saemangeum is more polluted. Cu and Cd concentrations in this study are similar to
Geum River Estuary