We are considering purchasing a GC-APCI-QTOF mass spectrometer (coupling gas chromatography/atmospheric pressure chemical ionization) for the determination of accurate mass, structure elucidation and semiquantitative work. Target compounds are semivolatile substances in paper and board. Are there any experiences here? Work from Pacchiarotta et al. (2010), David et al. (2011), and Wachsmuth et al. (2011) is already known.