APPARATUS FOR SAMPLING SOIL GAS SAMPLE, AND GAS SAMPLE- SAMPLING METHOD AND GAS-ANALYZING METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an apparatus for sampling a soil gas sample and to provide a primary/secondary investigation method using the apparatus.;SOLUTION: An apparatus 40 for sampling a soil gas sample is loaded into the punched hole of the soil whose primary soil investigation is completed for sampling a gas sample. The apparatus 40 has a gas introduction section 36 that is formed by assembling a plurality of gas introduction pipes 33A-33C that are successively adjusted to be shorter from the length according to the maximum depth of a punched hole 60 for sampling a gas sample, a switching means 32 for selectively switching gas sampling from each introduction pipe for selecting a gas sample to be sampled, a gas chromatography apparatus connection section 31 connected to the switching means 32, and inflatable balloons 35A-35D that are provided as a gas-shielding means at a position between gas introduction openings 34A-34C of the gas introduction pipes 33A-33C. Then, the sampled gas sample is supplied to SAW/GC for analyzing a gas sample, thus performing the secondary investigation of the soil.;COPYRIGHT: (C)2003,JPO