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于１９９６年３月在青岛小麦岛采得天然海水样品，在实验室合成针铁矿样品。用振荡 平衡实验和紫外／过硫酸钾法测定了海水中溶解有机物在针铁矿上吸附的等温线和交换率 ──ｐＨ曲线，并讨论了天然溶解有机物的吸附对海水中溶解有机碳分布的可能影响。测定结 果表明，溶解有机物在针铁矿上的吸附等温线为Ｌａｎｇｍｕｉｒ型，当吸附达到最大值时，在针铁矿 表面能够形成有机物单覆盖层。ｐＨ能影响溶解有机碳（ＤＯＣ）在针铁矿上的吸附，在ｐＨ值为 ５－６时，ＤＯＣ的吸附百分率最大。在海水ｐＨ为 ８．１下，ＤＯＣ在针铁矿上的吸附百分率超过 ５０％，因此这种吸附作用将对海水中ＤＯＣ的分布产生一定的影响。ＤＯＣ在针铁矿上的吸附是 静电作用和特性吸附共同作用的结果。
Natural seawater samples were taken from Qingdao Wheat Island in March 1996 to synthesize goethite samples in the laboratory. The isotherms and exchange rates of dissolved organic matter in seawater adsorbed on goethite were measured by oscillating equilibrium experiment and UV / persulfate method, and the adsorption of natural dissolved organic matter on dissolved organic carbon in seawater was discussed May affect. The results show that the adsorption isotherm of dissolved organic matter on Goethite is Langmuir type. When the adsorption reaches the maximum value, organic single coating can be formed on the surface of goethite. pH can affect the adsorption of dissolved organic carbon (DOC) on goethite, and the adsorption percentage of DOC is the highest at pH 5-6. At a seawater pH of 8.1, the DOC adsorption rate on goethite exceeds 50%, so this adsorption will have an effect on the distribution of DOC in seawater. The adsorption of DOC on goethite is the result of the interaction of electrostatic and characteristic adsorption.