GC-MS

Descripción

gcse chemistry Mapa Mental sobre GC-MS, creado por Ella Wolf el 16/05/2013.
Ella Wolf
Mapa Mental por Ella Wolf, actualizado hace más de 1 año
Ella Wolf
Creado por Ella Wolf hace más de 11 años
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Resumen del Recurso

GC-MS
  1. choose a substance to separate
    1. It will travel through a column carried by a gas
      1. the column is packed with solid material
        1. the different substances in the compound travel at different speeds
          1. the time taken for a substance to travel through the column can be used to help identify the sunstance
            1. the number of peaks on the output shows the number of compounds present
              1. the position of the peaks on the output indicates the retention time
                1. the output can be linked to a mass spectrometer which can be used to identify the substances leaving the end of the column
                  1. a mass spectrometer can identify substances quickly and accurately
                    1. the mass spectrometer can give the molecular mass of each substance
                      1. the molecular mass is given by the molecular ion peak
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