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本文研究了黄河悬浮粒子与镉（Ⅱ）相互作用的离子交换率（％）—pH曲线，以及河水中赖氨酸存在下对该曲线的影响。主要结果有；（1）镉以Cd（OH）+形式在悬浮粒子上进行阳离子交换，在天然pH下（8．0×8．5），镉离子交换率接近最大值；（2）镉离子浓度由8．9×10－6mol·L－1增加到2×8．9×10－6mol．L－1时，离子交换率降低；（3）浓度为6．8×10－6mol·L－1的赖氨酸对提高离子交换率起促进作用；（4）交换剂为转化沙的镉离子交换率比未转化沙小；（5）海水、金沙江水中悬浮粒子对镉的吸附弱于黄河水。
In this paper, the ion exchange rate (%) - pH curve of interaction between suspended particles and cadmium (Ⅱ) in the Yellow River and the effect of lysine in river water on this curve were studied. The main results are as follows: (1) Cadmium is cation exchanged on suspended particles in the form of Cd (OH) +. At natural pH (8.0 × 8.5), the exchange rate of cadmium ions is close to the maximum value. (2) The concentration increased from 8.9 × 10-6mol·L-1 to 2 × 8.9 × 10-6mol. L-1, the ion exchange rate decreased; (3) lysine at a concentration of 6.8 × 10-6mol·L-1 promoted the ion exchange rate; (4) the exchange agent was cadmium ion The exchange rate is smaller than unconverted sand. (5) In seawater, the adsorption of cadmium by suspended particles in water of Jinsha River is weaker than that of the Yellow River water.