Add time:09/10/2019 Source:sciencedirect.com
A high performance liquid chromatography (HPLC) method using fluorescence detection to determine 3-Amino-5-mercapto-1,2,4-triazole (cas 16691-43-3) (AMT) levels in serum has been developed. Sample preparation involved treatment with tributylphosphine (TBP) to reduce disulfides formed during storage, precipitation of proteins with acetonitrile (ACN), and precolumn derivatization using the thiol reactive fluorescent probe monobromobimane (MBB). The conjugate (AMT-MBB) was resolved by gradient elution from a C18 reversed-phase column. The assay method was linear over a concentration range of 0.78–50 μg/ml and had a limit of detection (LOD) of 0.05 μg/ml AMT (10 μl injection). This method provides a sensitive and specific tool for the determination of AMT in serum and may have potential industrial hygiene application.
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