Developing a Raman Spectral Method for Measuring the Strontium and Calcium Concentrations of Fish Otoliths
Surface-enhanced Raman scattering (SERS) spectra of Ca 2+ and Sr 2+ complexes of four dyes (O-cresolphthalein, PAN black, murexide, and eriochrome-black T(EBT) are reported. It has been demonstrated that SERS spectra of the murexide complex of Ca 2+ can be used for the accurate determination of the...
| Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1994
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/f94-057 http://www.nrcresearchpress.com/doi/pdf/10.1139/f94-057 |
| Summary: | Surface-enhanced Raman scattering (SERS) spectra of Ca 2+ and Sr 2+ complexes of four dyes (O-cresolphthalein, PAN black, murexide, and eriochrome-black T(EBT) are reported. It has been demonstrated that SERS spectra of the murexide complex of Ca 2+ can be used for the accurate determination of the cation in solutions at pH 12–8. Similarly, the SERS spectra of the EBT complex of Sr 2+ can yield accurate determination of the cation concentration in solutions at pH 12–8. The SERS technique has linear resolutions of Sr 2+ and Ca 2+ concentrations down to 219 and 20 ppb, respectively. The chemistry of the otoliths of Hyperoglyphe antarctica (Centrolophidae: Teleostei) and Beryx splendens (Berycidae: Teleostei) proved to be similar. Using the SERS murexide complex technique for Ca and the SERS EBT complex for Sr, concentrations were 39.33% weight Ca and 272.7 ppm Sr for H. antarctica and 44.93% weight Ca and 273.133 ppm Sr for B. splendens. |
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