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- W2313373462 abstract "Gas−liquid solubility equilibria (Henry’s Law behavior) are of basic interest to many different areas. Temperature-dependent aqueous solubilities of various organic compounds are of fundamental importance in many branches of environmental science. In a number of situations, the gas/dissolved solute of interest has characteristic spectroscopic absorption that is distinct from that of the solvent. For such cases, we report facile nondestructive rapid measurement of the temperature-dependent Henry’s law constant (KH) in a static sealed spectrometric cell. Combined with a special cell design, multiwavelength measurement permits a large range of KH to be spanned. It is possible to derive the KH values from the absorbance measured in the gas phase only, the liquid phase only (preferred), and both phases. Underlying principles are developed, and all three approaches are illustrated for a solute like acetone in water. A thermostatic spectrophotometer cell compartment, widely used and available, facilitates rapid temperature changes and allows rapid temperature-dependent equilibrium measurements. Applicability is shown for both acetone and methyl isobutyl ketone. Very little sample is required for the measurement; the KH for 4-hydroxynonenal, a marker for oxidative stress, is measured to be 56.9 ± 2.6 M/atm (n = 3) at 37.4 °C with 1 mg of the material available." @default.
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- W2313373462 date "2010-12-30" @default.
- W2313373462 modified "2023-10-18" @default.
- W2313373462 title "Rapid Nondestructive Spectrometric Measurement of Temperature-Dependent Gas−Liquid Solubility Equilibria" @default.
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- W2313373462 doi "https://doi.org/10.1021/ac102947j" @default.
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