Resonance-enhanced multiphoton ionization and VUV-single photon ionization as soft and selective laser ionization methods for on-line time-of-flight mass spectrometry : Investigation of the pyrolysis of typical organic contaminants in the steel recycling process - Adam, T.; Cao, L.; Kettrup, A.; Muhlberger, F.; Streibel, T.; Wang, H. Z.; Zimmermann, R.