Abstract
In this study, ion pairs in aqueous solution were quantitatively and simultaneously determinedviainfrared attenuated total reflection (IR-ATR) spectroscopy in combination with multivariate data evaluation.
Highlights
In this study, several salts occurring in seawater containing mostly IR-inactive ions were analyzed using IRATR spectroscopy
The developed method enabled their simultaneous quanti cation based on the changes they are inducing within the infrared attenuated total reflection (IR-ATR) spectrum of deionized water as a result of organization of the water molecules within the solvation shell of associated ions.[1]
In this study, rst results of the simultaneous detection and characterization of several ion pairs in arti cial salt solutions, prepared in the laboratory, as well as a sample of real seawater via ATR ITR spectroscopy in combination with multivariate data evaluation are discussed
Summary
Several salts occurring in seawater containing mostly IR-inactive ions (except SO42À) were analyzed using IRATR spectroscopy. The developed method enabled their simultaneous quanti cation based on the changes they are inducing within the IR-ATR spectrum of deionized water as a result of organization of the water molecules within the solvation shell of associated ions.[1]. In this study, rst results of the simultaneous detection and characterization of several ion pairs in arti cial salt solutions, prepared in the laboratory, as well as a sample of real seawater via ATR ITR spectroscopy in combination with multivariate data evaluation are discussed. For real-time measurements (e.g. monitoring of seawater quality) on-ship or on buoys, FTIR spectroscopy offers a method for rapid detection of several ion pairs in water within a single measurement. For the best of our knowledge, this is the rst study that deals with the determination of multiple ion pairs in one solution at a time
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