Sampler for measuring gaseous mercury released from soil

Abstract

The invention relates to a sampling bottle for measuring soil release gaseous mercury. The sampling bottle comprises a bottle body and a rubber plug matched with the bottle body, wherein a sampling pipe, an air inlet pipe and an inert gas inlet pipe are arranged on the rubber plug; the sampling pipe, the air inlet pipe and the inert gas inlet pipe are respectively communicated with the interior of the bottle body and are used for connecting gas inside and outside the bottle body; and airbag is arranged at one end of the air inlet pipe inserted into the bottle body. According to the sampling bottle, when the same amount of soil sample is tested, a large amount of gas samples can be collected, and the analytic error is reduced; sampling is directly performed at the sampling pipe orifice, and gas loss is avoided; and moreover, due to the airbag, the phenomenon that the actual sample gas amount is reduced due to the reduction of air pressure in the bottle body is avoided because the outside air enters the airbag to balance the air pressure in the bottle during sampling.

Description

technical field [0001] The present invention relates to a sampler, in particular to a sampler for measuring gaseous mercury released from soil. Background technique [0002] The research on soil mercury release needs to carry out bottle simulation test on soil samples. Since there is no special sampling equipment, when collecting gas samples in the bottle, the method of puncturing the rubber stopper with a syringe is generally used to extract the gas. However, this sampling method has at least three obvious Disadvantages: first, the amount of gas sample is relatively small, and the analysis error is large; second, the inner wall of the syringe will absorb the sample gas, resulting in the loss of sample gas; third, the actual sample gas volume is not enough due to the decrease of the air pressure in the bottle during sampling. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a sampling bottle for measuring the rele...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a sampling bottle for measuring the release of gaseous mercury from the soil, which overcomes the relatively small amount of gas samples extracted by using a syringe to pierce the rubber stopper in the prior art, and the analysis error is large; the inner wall of the syringe will absorb the sample gas , resulting in the loss of sampling gas; when sampling, the air pressure in the bottle is reduced and the actual sample gas volume is not enough.

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