Keen曾报道海水中水合氧化钛能与十几种元素发生离子交换作用,其中包括了铜,但它在“微量元素”中,其富集系数属最小的。我们已经研究过海水中铬(Ⅲ)和铀(Ⅵ)在水合氧化钛上的离子交换反应,它们的富集系数则在十几个元素中是前三名的,那末富集系数小的铜的离子交换反应,与铬(Ⅲ)铀(Ⅵ)的研究结果有否联系?是否有定量关系?这在离子交换理论上是有一定意义的。 Keen has reported that hydrated titanium oxide in seawater can ion exchange with a dozen elements, including copper, but it has the smallest enrichment coefficient in Trace Elements. We have studied the ion exchange reaction of chromium (Ⅲ) and uranium (Ⅵ) in hydrated titanium oxide in seawater, and their enrichment coefficients are the top three in a dozen elements, so the copper with a small enrichment coefficient Ion exchange reaction, and chromium (Ⅲ) uranium (Ⅵ) whether the relationship between the research results? Is there a quantitative relationship? This ion exchange theory is of some significance.