%0 journal article %@ 0021-9673 %A Jahnke, A., Gandrass, J., Ruck, W. %D 2004 %J Journal of Chromatography A %N 1 %P 115-122 %T Simultaneous determination of alkylphenol ethoxylates and their biotransformation products by liquid chromatography / electrospray ionisation tandem mass spectrometry %U 1 %X