![]() Their cross-interactions with solvents are discussed. The first workshop on the NIST Cybersecurity Framework update, Beginning our Journey to the NIST Cybersecurity Framework 2. No colligative behavior of solutions reflects individual properties of the solutes. Column type Active phase Temperature (C) I Reference Comment Capillary: RTX-5: 100. This paper discusses the influence of the modifier on the colligative properties of the principal mobile phase, which may define the situation in the total mobile phase in a chromatography column or in parts of a column under SFC. Provides thermochemical, thermophysical, and ion energetics data compiled by NIST under the Standard Reference Data Program. For example, methanol is added as a cosolvent/modifier to SCCO2 for the extraction/separation of polar compounds. This is half of the results that you get when you request a saturation temperature table. ![]() Here is another example of a data table that we obtained form the NIST WebBook. Supercritical fluid chromatography (SFC) and supercritical fluid extraction are generally carried out with neat supercritical carbon dioxide (SCCO2) or with SCCO2 containing modifiers (or cosolvents), especially for strongly polar compounds. Ch 3, Lesson B, - Data from the NIST WebBook. International Journal of Analytical Mass Spectrometry and Chromatography,ĪBSTRACT: It is important to understand the mechanism and implications of different modifiers on analytical and preparative processes under chromatography with supercritical fluids (SFs) and under extraction with SFs. Supercritical Fluid (SF), Supercritical Fluid Chromatography (SFC), Supercritical Fluid Extraction (SFE), Modifiers, Influence of Modifiers, Colligative Properties, Thermodynamics-Based Evaluation of Binary Mixtures, Phase Equilibria The site also includes two special features: a set of interactive physical property. It includes a variety of data from NIST and outside contributors. Influence of Modifiers on Supercritical Fluid Chromatography (SFC) and Supercritical Fluid Extraction (SFE), Part IĪUTHORS: Ilia Brondz, Boris Sedunov, Nagarajan Sivaraman The NIST Chemistry WebBook was established in 1996 and has grown to encompass a wide variety of thermochemical, ion energetics, physical, solubility, spectroscopic, and chromatographic data. ![]() NIST Chemistry WebBook (2016) Thermophysical Properties of Fluid Systems.
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