Abstract
Gas chromatographic analysis in practical air pollution research was showed. Two methods of the low temperature trapping and the adsorption using a adsorbant were most important. About each method, sampling, concentration, G. C. analysis and examples of the results were described. In the former, sample air was introduced in 20l vaccum glass bottle, which evaccuated through a concentration tube filled with C-22 and cooled with liquid oxygen to -183°C, then trapped pollutants were transfered to G. C. sampling tube and analyzed by gas chromatograph.
This type was used to the total analysis of air sample. In the latter, sample air was carried to the adsorption tube filled with charcoal by 10l Mariotte bottle, then adsorbed pollutants were desorbed by heating to 350°C, transfered to G. C. sampling tube and were gas chromatographed. This type was suitable to the measurement of distribution or continuous change of the pollution from auto exhaust gas.
