APPLICABILITY OF SYNERGISTIC ADSORPTION IN ELECTROANALYSIS OF DISSOLVED URANIUM IN SEAWATER

被引：25

作者：

MLAKAR, M

BRANICA, M

机构：

[1] Center for Marine Research Zagreb, Rudjer Boskovic Institute

来源：

MARINE CHEMISTRY | 1994年 / 46卷 / 1-2期

关键词：

D O I：

10.1016/0304-4203(94)90045-0

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A synergistic adsorption effect is used for the electrochemical determination of dissolved uranium concentration in seawater and estuarine waters. The ligand pairs salicyclic acid-tributylphosphate (tributylphosphine oxide), 2-thenoyltrifluoracetone (TTA)-TBP (TBPO), and acetylacetone-TBP have been experimentally tested. The measurements were performed by cathodic-stripping electrochemical techniques (normal pulse and linear-sweep voltammetry). Detection limits for uranium in 0.55 M NaCl after cathodic accumulation were found to be about 10(-10) M with the TTA-TBP pair and about 10(-9) M with the salicylic acid-TBP combination of ligands. The dissolved uranium concentrations in water samples from the Adriatic sea and estuaries of Krka and Rasa river were found to be lie between 0.7 and 4.0 x 10(-8) M.

引用

页码：61 / 66

页数：6

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