𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Structure—retention correlations of alkylphenols in gas—liquid and gas—liquid chromatography

✍ Scribed by W. Engewald; U. Billing; I. Topalova; N. Petsev

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
448 KB
Volume
446
Category
Article
ISSN
1873-3778

No coin nor oath required. For personal study only.

✦ Synopsis

The retention behaviour of alkyl-and dialkylphenols has been investigated by gas-liquid chromatography (GLC) on glass capillary columns, coated with PS-255 and OV-1701-Vi, and by gas-solid chromatography (GSC) on a microcolumn, packed with uncoated graphitized thermal carbon black (GTCB). The dependence of the chromatographic properties of the alkyl phenols on their molecular structure is discussed. Due to electronic and steric effects, alkyl groups neighbouring the phenolic hydroxyl group decrease the retention values in GLC. In contrast, the interaction between vicinal alkyl groups leads to increased retention. GSC on GTCB is advantageous for the distinction of metaand para-isomers, which are difficult to separate by GLC.

📜 SIMILAR VOLUMES

Investigations of the retention mechanis
Investigations of the retention mechanism in gas—liquid partition chromatography
✍ Z. Suprynowicz; A. Waksmundzki; W. Rudziński; J. Rayss 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 851 KB

A new graphical method is proposed for estimating the retention mechanism in gas-liquid partition chromatographic (GLPC) systems in which adsorption phenomena occur. The proposed method enables the adsorption phenomena accompanying the bulk liquid solution to be investigated unequivocally from gas c

Gas-liquid chromatography and structure-
Gas-liquid chromatography and structure-retention time relationship of anhalonium alkaloids and related bases
✍ Govind J. Kapadia; G. S. Rao 📂 Article 📅 1965 🏛 John Wiley and Sons 🌐 English ⚖ 293 KB

## Gas -Liquid Chromatography and Structure-Retention Time Relationship of Anhalonium Alkaloids and Related Bases EXPERIMENTAL Apparatus.-A Chromalab gas chromatograph equipped with hydrogen flame detector was used. Column.-The column was made' of glass tube, 12 ft. in length and having an inner

Pressure effects on relative retention i
Pressure effects on relative retention in capillary gas-liquid chromatography
✍ Victor G. Berezkin; Alexander A. Korolev; Irina V. Malyukova 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 692 KB

The dependence of retention values (capacity factor, relative retention, Kovats' retention index) of some organic compounds (different chemical classes) on average column pressure has been experimentally studied for three carrier gases (hydrogen, nitrogen, and carbon dioxide). Linear equations for t

Capillary gas chromatography of D-mannit
Capillary gas chromatography of D-mannitol acetals : Correlation between structure and retention
✍ É. Tomori; J. Kuszmann 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 501 KB

Compounds obtained on acetonation of D-mannitol were studied by gas chromatography and gas chromatography-mass spectrometry. The separation of the reaction mixtures was achieved on capillary columns coated with Carbowax 20M or OV-101. Methylene unit values were determined for ten acetylated D-mannit