Simultaneous determination of captopril and S‐benzoyl captopril in human blood by capillary gas chromatography–mass selective detection

Using a new table‐top electron‐impact mass selective detector, interfaced with a narrow bore, fused silica capillary gas chromatograph, a method has been developed for the simultaneous determination of captopril and S‐benzoyl captopril. With a capillary column the two components could be chromatographically resolved, thus permitting the use of electron‐impact ionization for quantitative measurements. Copyright © 1985 John Wiley & Sons, Ltd.