Applicability of glass fiber as a support material for generation of gaseous standard mixtures using thermal decomposition of the surface compound.: Calibration of analytical equipment

The use of glass fiber as a support material for a surface compound serving to generate gaseous standard mixtures of ethene is described. The technique is based on the process of thermal decomposition of the surface compound in a desorber connected on-line via a multi-port valve to the calibrated device. The surface compound undergoes thermal decomposition at 245degreesC, yielding known amounts of ethene. The method enables on-line preparation of a standard mixture immediately before the calibration step. Consequently, it can be also applied for the generation of standard mixtures containing volatile, malodorous, unstable, and toxic compounds.