@unpublished{SpangenbergWeyandt-Spangenberg2016,
  author    = {Spangenberg, Bernd and Weyandt-Spangenberg, Marion},
  title     = {A Validated Quantification of Methadone in Liquids Using Thin-Layer Chromatography and a Flatbed Scanner},
  series    = {JPC : Journal of Planar Chromatography - Modern TLC},
  volume    = {29},
  number    = {1},
  issn      = {1789-0993 (Online)},
  doi       = {10.1556/1006.2016.29.1.7},
  institution = {Fakult{\"a}t Maschinenbau und Verfahrenstechnik (M+V)},
  pages     = {59 -- 65},
  year      = {2016},
  abstract  = {We present a videodensitometric quantification method for methadone in syrup, separated by thin-layer chromatography (TLC). The quantification is based on a derivation reaction with Dragendorf reagent. Measurements were carried out using a 16-bit flatbed scanner. The range of linearity covers two magnitudes of power using the Kubelka-Munk expression for data transformation. The separation method is inexpensive, fast, and reliable.},
  subject      = {D{\"u}nnschichtchromatographie},
  language  = {en}
}