Kragten J, Decnop-Weever L G
Natuurkundig Laboratorium der Universiteit van Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands.
Talanta. 1983 Feb;30(2):134. doi: 10.1016/0039-9140(83)80034-4.
Experiments performed previously with cerium(III), samarium and gadolinium have been extended to conditions of high pC(H) in order to discover any amphoteric character. Up to pC(H) 14.6, the solubility of gadolinium hydroxide and of cerium(III) hydroxide does not increase, so the previously reported constants hold up to this pC(H). The solubility of samarium hydroxide increases at high pC(H), and the value log ( *)beta(4) = -36.7 can be deduced. This should be added to the previously reported set, now applicable up to pC(H) 14.5.
之前用铈（III）、钐和钆进行的实验已扩展至高pC（H）条件，以发现任何两性特征。直至pC（H）14.6，氢氧化钆和氢氧化铈（III）的溶解度都没有增加，因此先前报道的常数在该pC（H）范围内仍然适用。氢氧化钐的溶解度在高pC（H）时增加，由此可推导出log（*）β（4）=-36.7。应将此值添加到先前报道的常数集中，现在该常数集适用于pC（H）14.5。
