環境水中の2,2’,4,4’-テトラヒドロキシベンゾフェノン分析法

抄録

A simple and selective method was developed for determining the concentration of 2,2',4,4'-tetrahydroxybenzophenone (2,2',4,4'-THBP) in river and sea water samples by using liquid chromatography/tandem mass spectrometry (LC/MS/MS) with an electrospray ionization interface in the negative ion mode and selective reaction monitoring mode. Trace amounts of 2,2',4,4'-THBP were, adjusted to pH 2-7 with 2 mol/L HCl, collected in a Sep-Pak Plus C18 cartridge that was eluted with methanol. The method detection limit of 2,2',4,4'-THBP is 5.8 ng/L. The average recovery of 2,2',4,4'-THBP from river water samples added with 50.0 ng was 101%, and the relative standard deviation was 1.5%, respectively. The average recovery of 2,2',4,4'-THBP from sea water samples added with 50.0 ng was 102%, and the relative standard deviation was 1.5%, respectively. The 2,2',4,4'-THBP were not detected in river and sea water samples. Trace peaks of 2,2',4,4'-THBP were found in the sewage influents and effluents, and the concentration ranged from n.d. to 10 ng/L.