Sampling device for volatile gas on the surface of water body and soil and sampling method thereof
A volatile gas, soil surface technology, applied in the direction of sampling devices, etc., to achieve the effect of low cost, avoiding vacuum or high pressure, and simple composition
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Embodiment 1
[0019] The structure of this water body, soil surface volatile gas sampling device embodiment is as shown in Figure 1, and its system comprises the gas cylinder 1 that nitrogen compressed gas is housed, gas decompression valve 2, input gas flowmeter 3 (0-10L / min), dynamic collection box 4, output gas flow meter 3' (0-10L / min), stirring propeller 5, one-way valve 6, three-way valve 7, vacuum sampler 8 and small air pump 9 and other components. The dynamic collection box 4 is a rectangular plexiglass box (length, width, and height are 80cm, 50cm, and 50cm respectively), and the bottom is not closed to form a volatile sample collection port. The left and right sides of the box are respectively provided with an air inlet and an outlet. The air port is provided with a stirring propeller 5 (for a CPU fan) in the case. The gas storage bottle 1 is connected to the air inlet of the dynamic collection box 4 through the gas decompression valve 2 and the input gas flowmeter 3, and the ga...
Embodiment 2
[0022] With the sampling device of the present invention (as embodiment one), the method for sampling the volatile malodorous gas on the surface of the sewage pool is as follows:
[0023] In the first step, the floating material is fixed around the lower edge of the dynamic collection box 4, and then put into the sewage pool of the corresponding treatment unit of the sewage treatment plant, and the air inlet and the air outlet on both sides of the dynamic collection box 4 are used with flexible pipes ( Commercially available Teflon pipes) lead out and connect to the system;
[0024] In the second step, turn the three-way valve 7 so that its input port is connected to its first output port, and open the one-way valve 6 connecting the first output port of the three-way valve 7 with the small air pump 9, and then open the air storage Gas decompression valve 2 of bottle 1, and turn on power switch, start stirring propeller 5 and small-sized air pump 9 in the dynamic collection box...
Embodiment 3
[0028] With sampling device of the present invention (as embodiment one), the method for sampling the volatile gas on the surface of the river course is as follows:
[0029] The first step is to fix the floating material around the lower edge of the dynamic collection box 4, then put it into the surface of the river water body, and the air inlet and the air outlet on both sides of the dynamic collection box 4 are drawn out with flexible pipes (commercially available Teflon pipes) and Access to this system;
[0030] In the second step, turn the three-way valve 7 so that its input port is connected to its first output port, and open the one-way valve 6 connecting the first output port of the three-way valve 7 with the small air pump 9, and then open the air storage Gas decompression valve 2 of bottle 1, and turn on power switch, start stirring propeller 5 and small-sized air pump 9 in the dynamic collection box 4, adjust two gas flow meters to make input gas flow meter 3 and out...
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