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１９９６年５月采样测定鸭绿江口溶解有机碳（ＤＯＣ）的含量，得出分布变化特征，并同其它一些河口的溶解有机碳进行了比较。鸭绿江口表层水溶解有机碳的平均含量为２０８μｍｏｌＣ／Ｌ。在盐度大于１．６的河口区，溶解有机碳的分布主要受海水稀释作用控制；在盐度０～１．６的区域溶解有机碳的浓度随盐度的增加而明显增加。在最大混浊带，ＤＯＣ的浓度最高，表明有颗粒有机碳转化为溶解有机碳。丹东市以上流段，河水中溶解有机碳的含量相对较低，说明由丹东市引入的工业及生活污水对鸭绿江水体中溶解有机碳的含量有一定的影响。
In May 1996, the content of dissolved organic carbon (DOC) in the Yalu River Estuary was sampled to determine the distribution characteristics and compared with the dissolved organic carbon in other estuaries. The average dissolved organic carbon in surface water of the Yalu River Estuary was 208 μmolC / L. In the estuarine areas where the salinity is greater than 1.6, the distribution of dissolved organic carbon is mainly controlled by seawater dilution. The concentrations of dissolved organic carbon in the salinity 0-1.6 area increase significantly with the increase of salinity. At the maximum turbidity, the DOC concentration was highest, indicating the conversion of particulate organic carbon to dissolved organic carbon. Above Dandong, the content of dissolved organic carbon in the water is relatively low, indicating that the industrial and domestic sewage introduced by Dandong City has a certain impact on the dissolved organic carbon in the Yalu River.