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Carbohydrate - related hydroxy carboxylic and dicarboxylic acids as trimethylsilyl derivatives

Retention data in GLC analysis

Göran Petersson (Institutionen för teknisk kemi)
Journal of Chromatographic Science (0021-9665). Vol. 15 (1977), p. 245-255.
[Artikel, refereegranskad vetenskaplig]

Retention index and relative retention were determined for trimethylsilyl esters/ethers of approximately 170 acids and lactones. The structural categories studied were aldonic (hydroxy monocarboxylic) acids, aldaric (hydroxy dicarboxylic) acids, non - carbohydrate (mainly dicarboxylic) acids, and lactones of aldonic acids. Data are given for the silicone stationary phases OV-1 (methyl), OV-17 (50% phenyl) and QF-1 (50% trifluoropropyl).

Diagrams of the retention index on the non-polar phase versus the increase in the retention index on either of the other phases are useful for qualitative analysis. The dependence of retention on structure is interpreted in terms of non-polar and polar interactions between solute and stationary phase. Structural units of the solutes are attributed retention index increments which permit predictions of retention from structure or structure from retention.

The reference retention index data can be used in temperature - programmed analalysis if retentions are measured as methylene unit (MU) values. Differences between the retention index and MU concepts are discussed.

Nyckelord: gas chromatography, Me3Si derivatives, sugar - related hydroxy acids, silicone phases

This systematic study of retention data includes hydroxy acids identified by GC-MS as trimethylsilyl derivatives during many years of basic and applied research on the degradation of carbohydrates. Applications related mainly to processes in the paper and pulp industry which were extensively studied at the department by professor Olof Samuelson and his teams of PhD students.

Denna post skapades 2010-02-10. Senast ändrad 2013-08-09.
CPL Pubid: 111822


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