摘要
在pH 10.88溶液中，铌 (V)与偶氮氯膦 MK(CPAMK)发生配位反应。本文应用光谱修正技术研究配合物溶液性质常数如络合物组成比、逐级摩尔吸收系数、稳定常数等的测定。结果表明：所生成配合物为 Nb(CPAMK)8，在 654 nm波长处真实摩尔吸收系数ε=3.62× 104 lmol^(-1)· cm^(-1)，其累积稳定常数 K=9.4× 10^(43)。
The reaction between niobium(V) and chlorophosphonazo MK(CPAMK) was sensitive at pH 10.88.The spectra correctiontechnique was applied to investigate the property coustauts of the Nb-CPAMK complex,such as the complexation ratio,stepwise absorptivity and stability constant.Results showed that the formed complex was expressed as:Nb(CPAMK)8,its real(not apparent) absorptivity 3.62× 104 lmol^(-1)cm^(-1) at 654 nm and its cumulative stability constant 9.4×10^(43).
出处
《淮北煤师院学报（自然科学版）》
2001年第3期52-55,共4页
Journal of Huaibei Teachers College(Natural Sciences Edition)
