摘要：A sensitive method was developed for the determination of methyl chloride in ambiant air. Air was passed through the concentration tube packed with Silicone DC-200 (supporter : Chromosorb WAW, DMCS) and chilled at -72°, and the concentrate was introduced into a gas chromatograph by raising temperature of the tube. Two liters of ambient air can be analyzed by this method and detection limit of methyl chloride was 11.9 ppb.
关键词：methylchloride;gas chromatography;micro determination;concentration tube;cold trapping;ambient air
