Using Ag/H cartirdges to remove chlorine for determination of disinfection by-products in finished water by UPLC-MS/MS
Objective To establish a silver-hydrogen column dechlorination-ultra-performance liquid chromatography mass spectrometry method for the detection of disinfection by-products in factory water.Methods The samples were separated on an HSS T3 column(100 mm×2.1mm,1.8 μm)after being filtered by an Ag/H solid-phase extraction column,filtered by 0.22 μm membrane,and analyzed by gradient elution with methanol-0.000 5%formic acid aqueous solution,electrospray anion(ESI-)mode,and multiple reaction monitoring mode(MRM).In order to correct for matrix effects,monochloroacetic acid,dichloroacetic acid,monobromoacetic acid,monochloromonobromoacetic acid,dibromoacetic acid,trichloroacetic acid,monobromodichloroacetic acid,dibromomonochloroacetic acid and tribromoacetic acid were quantified by matrix matching standard curve method.Results The nine haloacetic acids(HAA)had a good linear relationship within 0.5-100 μg/L(r≥0.9995),the detection limit(S/N=3)was 0.012-0.50 μg/L,and the quantification limit(S/N=10)was 0.036-1.50 μg/L.The average recoveries were 75.3%-106.3%,and the relative standard deviation ranged from 0.58%-12.8%.Conclusion The method is rapid for detection of trace haloacetic acids in finished water for convenience.
liquid chromatography-tandem mass spectrometrydisinfection by-productsfinished water
万方数据
维普
