Liquid chromatographic determination of sodium mercaptoundecahydrododecaborate (cas 12294-22-3) in rat urine and plasma after precolumn derivatization

Add time:08/14/2019    Source:sciencedirect.com

A high-performance liquid chromatographic (HPLC) method was developed for the determination of disodium mercaptoundecahydrododecaborate (cas 12294-22-3) (BSH) in biological fluids. Monobromobimane was used as a precolumn derivatizing agent. A stable derivative was obtained. The derivative was separated on a C18 column using reversed-phase ion-pairing chromatography and detected by a spectrophotometric detector at 373 nm. The detection limit was 200 ng/ml (0.1 ppm boron). Calibration curves were prepared for rat urine and plasma samples. The calibration curves were linear in the range of 1 μg/ml to 100 μg/ml for urine samples and 0.2 μg/ml to 50 μg/ml for plasma samples.

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