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实验研究海水中天然溶解有机物（ＤＯＭ）在δ－ＭｎＯ２、粘土和二氧化硅上的吸附，海水中溶解有机碳（ＤＯＣ）在δ－ＭｎＯ２、高岭石、伊利石和二氧化硅上的吸附率随ｐＨ的增加而减小。结果表明，在天然海水ｐＨ８．１条件下，海水中天然溶解有机物在这４种固体粒子上的吸附率大小为：δ－ＭｎＯ２（３２％）＞伊利石（１４％）＞高岭石（４％）≈二氧化硅（３％）。根据统计热力学方法得到的公式能够很好地拟合海水中ＤＯＭ在固体颗粒物上的吸附。
Adsorption of DOM on δ-MnO2, clay and silica in seawater, adsorption of dissolved organic carbon (DOC) in δ-MnO2, kaolinite, illite and silica in seawater Decreases with increasing pH. The results showed that the adsorption rates of natural dissolved organic matter in seawater on these four kinds of solid particles were as follows: δ-MnO2 (32%)> illite (14%)> kaolinite %) ≈ silica (3%). According to the formula of statistical thermodynamics, the adsorption of DOM in seawater on solid particles can be well fitted.