54 research outputs found
Critical reconsideration of the physical meaning and the use of fundamental retention parameters in gas chromatography. New IUPAC recommendations
Sorption of solvents by macroreticular, isoporous styrene polymers and the sulphonic cation exchangers based on them
Stereoselectivity in bis(α-amino acid)copper(II) complexes—II[5] spectrophotometric and spectropolarimetric investigation of the solvent effect
On factors affecting the swelling ability of crosslinked polymers. Effect of the rate of crosslinking in the polymer solution
Evaluation of a hypercrosslinked polystyrene, MN-200, as a sorbent for the preconcentration of volatile organic compounds in air
Breakthrough volumes, average percentage recoveries, and storage stabilities were obtained for vapors of 8 volatile organic compounds (pentane, octane, undecane, isooctane, cyclohexane, toluene, methanol, and dichloromethane) on a new adsorbent material, Hypersol-Macronet, MN-200. Breakthrough volumes were estimated as half of the gas chromatographic specific retention volumes at 20°C for the compounds. Recoveries of the adsorbates were determined by both solvent extraction and thermal desorption methods. The results obtained compare favorably with those for Tenax GR (values reported in the published literature and others obtained in our laboratory). Results of storage stability studies on MN-200 meet the criterion for acceptability (<10% loss). High adsorption capacity for very volatile and polar compounds, combined with ease of desorption of less volatile compounds, render MN-200 a highly promising adsorbent for sampling volatile organic compounds in indoor and outdoor air
The properties of sulphur cation-exchange resins based on bulk and granular, macro-crosslinked, isoporous styrene copolymers
Gas Adsorption onto an MN-270 Polymer Adsorbent within a Supercritical Range of Temperatures and Pressures
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