作者:R.S. Saxena、O.P. Sharma
DOI:10.1016/0022-1902(66)80245-2
日期:1966.1
compounds formed by the interaction of thorium salt and different alkali-vanadates (ortho-, pyro-, meta-, and poly-) have been investigated by means of amperometric titrations between the reactants at Ed.e. = −1·5 V (vs. S.C.E.). The end-points obtained from the sharp breaks in titration curves provide definite evidence for the formation and precipitation of thorium ortho- 3ThO3·2V2O5, pyro-ThO2·V2O5 and
已经通过在E d.e处反应物之间的安培滴定法研究了由salt盐和不同的碱式钒酸盐(邻位,焦位,间位和多位)相互作用形成的化合物的化学计量。= -1·5 V(相对于SCE)。从滴定曲线的急剧折断中获得的终点为or正3ThO 3 ·2V 2 O 5,焦-ThO 2 ·V 2 O 5和间位ThO 2 ·2O 2 O 5的形成和沉淀提供了确凿的证据。钒酸盐的pH范围分别为7·50-6·00、6·00-4·80和4·80-3·50。已发现原钒酸or的沉淀是定量的,安培滴定法提供了一种简单,快速的方法,用于在合适的浓度pH范围内测定溶液中的Th 4+。