Ozone measurement with silica cartidges and HRGC-MS analysis.

  title={Ozone measurement with silica cartidges and HRGC-MS analysis.},
  author={Angelo Cecinato and Vincenzo Di Palo and Massimiliano Possanzini},
  journal={Fresenius' journal of analytical chemistry},
  volume={369 7-8},
Ozone in ambient air is collected onto silica gel cartridges impregnated with pentafluorophenylhydrazine (PFPH) and 1,2-di(4-pyridyl)ethylene (DPE), so that the pyridine-4 aldehyde formed by DPE oxidation is converted into the corresponding PFPH derivative (PPH). The latter product is determined by HRGC/MS. Since the ozonolysis reaction proceeds stoichiometrically on the cartridge, there is no need for calibration in the gas phase with a standardized ozone source. When compared with UV… CONTINUE READING

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