PROBLEM TO BE SOLVED: To provide a sample collection device for soil pollution investigation, which investigates accurately soil pollution, and also to provide a soil pollution investigation device using it. SOLUTION: Water is sucked through a water suction pipe disposed inside a hole in the ground. A lead-in pipe 86a is provided by being branched from the first connection pipe 44 linked to the water suction pipe, and the lead-in pipe 86a is communicated with a water lead-in container 85. An on-off valve 91 is disposed on the first connection pipe 44. Water introduced into the water lead-in container 85 is discharged through a lead-out pipe 86b. A lead-in control valve 87 is disposed in the lead-in pipe 86a and a lead-out control valve 88 is disposed in the lead-out pipe 86b. When both control valves 87, 88 are closed, the lead-in pipe 86a, the water lead-in container 85 and the lead-out pipe 86b positioned between both control valves 87, 88 are sealed by both control valves 87, 88. An investigation object material dissolved in water in the water lead-in container 85 is vaporized in a vaporization container 92 by supplying the air by an air supply pump 102, and the concentration of the investigation object material is measured by a concentration measuring device 104. COPYRIGHT: (C)2008,JPO&INPIT
