Aqueous phosphate detection using Eu(acac)3
- Washington State Univ., Spokane, WA (United States). Institute for Shock Physics; ExMat Research
- Washington State Univ., Spokane, WA (United States). Institute for Shock Physics
- ExMat Research Inc., Spokane, WA (United States)
Currently, the majority of phosphate-sensitive phosphors reported in literature are metal-based complexes that require complicated and expensive synthesis to prepare. Here, in this study, we investigate the phosphate detecting capabilities of an inexpensive off-the-shelf phosphor: Eu(acac)3. We characterize its phosphate sensitivity as a function of sensor concentration and find that the quenching coefficient is inversely proportional to sensor concentration. This results in the limit-of-detection scaling linearly with sensor concentration. We determine its concentration-independent sensitivity to be 1.558 ± 0.012, which results in our lowest sensor concentration (44 μM) having a limit-of-detection of 3.39 ± 0.68 μM. We also find that for phosphate concentrations less than the sensor concentration, the fluorescence intensity ratio behaves linearly, but transitions to a non-linear functionality as the phosphate concentration exceeds the sensor concentration.
- Research Organization:
- ExMat Research Inc., Spokane, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science (BSS)
- Grant/Contract Number:
- SC0022391
- OSTI ID:
- 2345191
- Journal Information:
- Applied Physics. B, Lasers and Optics, Journal Name: Applied Physics. B, Lasers and Optics Journal Issue: 12 Vol. 129; ISSN 0946-2171
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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