Journal
ANALYTICA CHIMICA ACTA
Volume 847, Issue -, Pages 55-60Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2014.07.016
Keywords
Uranyl ion detection; Schiff base; Aggregation induced emission enhancement; Fluorescence turn-on detection
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Funding
- special research fund for Doctor Degree [20121018531]
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A sensitive fluorescence turn-on method for trace amounts of uranyl ion (UO22+) in solution has been developed in this study, based on aggregation induced emission enhancement (AIEE) characteristics of 4-pethoxycarboxyl salicylaldehyde azine (PCSA) induced by complex interaction between UO22+ and PCSA. Under optimized conditions, a fluorescence enhancement at 540 nm could be observed, which was linearly related to the concentration of UO22+ in the range of 1-25 ppb (part per billion). Analytical data showed that a detection limit of 0.2 ppb was achieved with the relative standard deviation (R.S.D.) 1.3% (n = 5). The proposed method was successfully utilized in quantifying UO22+ in fuel processing wastewaters. (C) 2014 Elsevier B.V. All rights reserved.
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