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Analysis of salbutamol in human plasma by high‐performance liquid chromatography with electrochemical detection using a micro‐electrochemical flow cell
Author(s) -
Sagar Kamal A.,
Hua Chi,
Kelly Mary T.,
Smyth Malcolm R.
Publication year - 1992
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140040415
Subject(s) - detection limit , electrode , materials science , microelectrode , chromatography , analytical chemistry (journal) , glassy carbon , electrochemistry , detector , electrochemical cell , chemistry , cyclic voltammetry , optics , physics
A high‐performance liquid chromatographic (HPLC) method for the determination of salbutamol in human plasma is described based on separation on a reversed‐phase C 18 column followed by detection using a carbon fiber‐based electrochemical detector. The carbon fiber‐based flow electrode used in the analytical system showed some advantages over conventional electrochemical detectors using glassy carbon electrodes. It is easy to prepare, flexible to operate, and suffers less trouble from air bubbles and leaks. It was shown that this kind of microelectrode flow detector exhibits a better detection limit (1 ngml −1 ) to that obtained using a conventional glassy carbon electrode flow detector (3 ngml −1 ). The method was found to be reproducible, with a mean overall coefficient of variation (C.V.) of 5.4%, and drug recovery was in excess of 85% at the concentration levels studied.