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Disposable electrodes for field screening of trace uranium
Author(s) -
Wang Joseph,
Baomin Tian,
Setiadji Rossi
Publication year - 1994
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140060408
Subject(s) - uranium , trace (psycholinguistics) , electrode , field (mathematics) , radiochemistry , chemistry , environmental science , environmental chemistry , materials science , metallurgy , mathematics , linguistics , philosophy , pure mathematics
A novel electrochemical sensor for trace (μg/L) Uranium, based on adsorptive stripping potentiometry, is described. The sensor operation relies on the adsorptive accumulation of the uranium‐cupferron complex onto a mercury‐coated screen‐printed carbon electrode. The disposable nature of these electrodes makes them very attractive for on‐site characterization of nuclear energy sites. Various variables affecting the potentiometric stripping response were characterized and optimized to yield low‐detection limit (e.g., 0.5 μg/L following a 5 minute adsorption) and good precision (relative standard deviation (RSD) = 1.4% for n = 15, 25 μg/L uranium). Convenient measurements can be carried out in nondeaerated and quiescent solutions. Applicability to the quantitation of uranium in groundwater samples is demonstrated.