Simultaneous Determination of Monoatomic Ions via Infrared Attenuated Total Reflection Spectroscopy in Aqueous Solution at Different Temperatures
| Autor: | Florian Rauh, Boris Mizaikoff |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Attenuated total reflection spectroscopy
Analytical chemistry Hydration Meerwasser Infrared spectroscopy Ionic bonding ATR-Technik Principal components analysis 02 engineering and technology Chemometrie 01 natural sciences Ion Attenuated total reflection Salt ions Molecule Chemometrics Spectroscopy Instrumentation Komponentenanalyse Aqueous solution Chemistry 010401 analytical chemistry 021001 nanoscience & nanotechnology 6. Clean water 0104 chemical sciences ATR Solvation shell Principal component analysis/regression ddc:540 PCA/PCR IR Seawater Analysis Infrared 0210 nano-technology Infrarotspektroskopie Principal component regression |
| Zdroj: | Applied spectroscopy. 70(7) |
| ISSN: | 1943-3530 |
| Popis: | In this study, monoatomic and thus IR-inactive ions were determined via infrared attenuated total reflection (IR-ATR) spectroscopy including Cl−, Na+, Mg2+, Ca2+, K+ and Br−, next to the IR-active ion [Formula: see text]. The determination of IR-inactive ions is enabled, as each ion influences the infrared spectrum of bulk water by organizing the water molecules within the solvation shell around the ionic species in a unique way. Furthermore, the influence of temperature was taken into account for the potential application of this analytical technique in real-world scenarios. Using chemometric data analysis, seven ions could be discriminated at temperatures ranging between 3 ℃ and 45 ℃. Finally, within a sample of seawater, Cl−, Na+, Mg2+ and [Formula: see text] could be simultaneously quantified, while the concentrations of Ca2+, K+ and Br− remained below the achievable limits of detection. |
| Databáze: | OpenAIRE |
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