Evaluation of deactivated reversed phases for the analysis of an N,N,N-trimethylethanaminium analogue of α-tocopherol

Reversed-phase liquid chromatography (RP-HPLC) has become a powerful and widely employed technique in the separation and analysis of a great variety of compounds with different functionalities. The most common type of stationary phase for RP-HPLC consists of nonpolar, hydrophobic organic species (e.g., octyl, octadecyl) attached by siloxane bonds to the surface of a silica support. In the first part of this article, a description of the many beneficial properties that make porous silica the most employed support in RP-HPLC will be presented, starting from the synthesis of silica. It is noteworthy that the chromatographic properties of the final column are strictly correlated to the preparation type. A silica surface possesses a number of attractive properties, but also some drawbacks. Unreacted or residual silanols interact with basic compounds and can induced peak tailing, which means a loss in chromatographic performance. This problem has lead many manufactures to produce stationary phases with reduced silanol activity which improve dramatically the peak shape of basic compounds. In the second part of this review, different approaches are proposed to obtain less reactive stationary phases

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Silica and other materials as supports in liquid chromatography. Chromatographic tests and their importance for evaluating these supports. Part I

Stella

Rudaz

Veuthey

et al. 2001

Chromatographia

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Amphiphilic α-tocopherol analogues as inhibitors of brain lipid peroxidation

Bolkenius¹,

Verne-Mismer²,

Wagner³

et al. 1996

European Journal of Pharmacology

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Effect of some mobile phase additives on the retention characteristics of different solute types on reversed-phase media. II

McCrossen¹,

Simpson²

1995

Journal of Chromatography A

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Evaluation of deactivated reversed phases for the analysis of an N,N,N-trimethylethanaminium analogue of α-tocopherol

Cited by 9 publications

References 18 publications

Silica and other materials as supports in liquid chromatography. Chromatographic tests and their importance for evaluating these supports. Part I

Silica and other materials as supports in liquid chromatography. Chromatographic tests and their importance for evaluating these supports. Part I

Amphiphilic α-tocopherol analogues as inhibitors of brain lipid peroxidation

Effect of some mobile phase additives on the retention characteristics of different solute types on reversed-phase media. II

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