Abstract

A gas Chromatographic method is described for the determination of reactive hydrocarbons in the atmospheric air at Trombay, Bombay. Pre-concentration of the atmospheric hydrocarbons is carried out on short U-columns of silica gel kept at dry-ice temperature. The detector is based on the measurement of light intensity due to chemiluminescent reactions between O 3 and the reactive hydrocarbons in the detector and is thus selectively sensitive to reactive hydrocarbons. Data on atmospheric concentrations of these hydrocarbons at Trombay is reported.

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