摘要
对乙异羟肟酸(AHA)与Zr(Ⅳ),UO22+的配位行为进行了初步研究,测定了AHA与Zr(Ⅳ),UO22+配合物的稳定常数。结果表明,在HCl O4体系中,AHA与Zr(Ⅳ),UO22+分别发生三、二级配位,其稳定常数分别为:β1(Zr(Ⅳ))=(6.7±0.1)×1013,β2(Zr(Ⅳ))=(1.8±0.1)×1025,β3(Zr(Ⅳ))=(3.8±0.3)×1035;β(UO2+)=(8.6±0.4)×107,β(UO2+)=(3.8±0.1)×1014。
An investigation was made on the formation of complexes between acetohydroxamic acid and UO^2+2,Zr(Ⅳ) ions.The stability constants of the complexes of zirconium ion and uranyl ion with acetohydroxamic acid were determined by using the distribution method and the pH-potentiometric method respectively.The values of the stepwise stability constant thus obtained are the following: β1(Zr(Ⅳ))=(6.7±0.1)×10^13,β2(Zr(Ⅳ)) =(1.8±0.1)×10^25,β3(Zr(Ⅳ))=(3.8±0.3)×10^35;β1(UO^2+2)=(8.6±0.4)×10^7,β2(UO^2+2)=(3.8±0.1)×10^14.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
2008年第2期65-69,共5页
Journal of Nuclear and Radiochemistry