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首页> 外文会议>Safety of radioactive waste management >STUDY ON THE REMOVING MATERIALS OF CESIUM ION FROM WATER: INTERACTIONS OF Cs, K AND Na IONS AGAINST TRIS-OXALATO CHROMATE(III) ION AND SOME SUBSTITUTED BENZENESULFONATE IONS
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STUDY ON THE REMOVING MATERIALS OF CESIUM ION FROM WATER: INTERACTIONS OF Cs, K AND Na IONS AGAINST TRIS-OXALATO CHROMATE(III) ION AND SOME SUBSTITUTED BENZENESULFONATE IONS

机译：水中铯离子去除材料的研究：Cs，K和Na离子与三氧杂草酸铬（III）离子和某些取代的苯磺酸钠离子的相互作用

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The equivalent conductivities A of dilute aqueous solutions were measured at 25°C for Cs, K and Na salts of [Cr(ox)_3] ~ and R_n(C_6H_(5_n))SO_4~ in order to study the interactions between these cations and anions, where ox is 1,2-ethandioato ion (oxalato ion), R is methyl or isopropyl group and n is the number of alkyl group. The equivalent conductivities at infinite dilution A° and the concentration dependence of A, -dA/dl~1/2 were determined, where I is the ionic strength. Assuming that the deviation of -dA/dl~1/2 from the theoretical concentration dependence of A is due to the formation of M+[Cr(ox)_3] ~ the ion association constant K_ass was calculated. The values of K_ass are 46.5 and 55.0 for Cs, K and Na salts of [Cr(ox)_3] ~ respectively. This tendency was explained in terms of the interaction between [Cr(ox)_3]~1 and solvent water. On the other hand, R_n(C_6H_(5-n))SO_4 are not associated with Cs, K and Na ions. However the solubility of Cs salt of (C_3H_7)3(C_6H_2)SO4~ is much smaller than Na salt. This suggests that 2,4,6-(C_3H_7)_3(C_6H_2)SO_4~ is useful for the analysis of Cs~ by the precipitation titration.
机译：为了研究这些阳离子与阴离子，其中ox是1,2-巯基离子（草酸根离子），R是甲基或异丙基，n是烷基数。测定在无限稀释A°下的等效电导率和A的浓度依赖性，-dA / dl〜1/2，其中I是离子强度。假定-dA / dl〜1/2与A的理论浓度依赖性之间的偏差是由于M + [Cr（ox）_3]〜的离子缔合常数K_ass的形成引起的。对于[Cr（ox）_3]-的Cs，K和Na盐，K_ass的值分别为46.5和55.0。通过[Cr（ox）_3]〜1与溶剂水之间的相互作用来解释这种趋势。另一方面，R_n（C_6H_（5-n））SO_4不与Cs，K和Na离子缔合。然而，（C_3H_7）3（C_6H_2）SO4〜的Cs盐的溶解度比Na盐小得多。这表明2,4,6-（C_3H_7）_3（C_6H_2）SO_4〜可用于通过沉淀滴定法分析Cs〜。

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