CN107824231B

CN107824231B - Experimental device for be used for saving liquid isotope trade sample

Info

Publication number: CN107824231B
Application number: CN201710864127.1A
Authority: CN
Inventors: 童海滨; 李柳阳; 黄增玉; 李婉璐; 谷新晨; 何海珊
Original assignee: Henan University
Current assignee: Henan University
Priority date: 2017-09-22
Filing date: 2017-09-22
Publication date: 2020-10-20
Anticipated expiration: 2037-09-22
Also published as: CN107824231A

Abstract

An experimental device for storing liquid isotope standard samples mainly comprises a piston and a piston cylinder which are in static fit and sealed connection, wherein a vent hole is formed in the piston, and a vent hole rubber plug is in sealed connection with the vent hole. The piston cylinder is provided with an inlet pipe and an outlet pipe, the inlet pipe is connected with an inlet connecting pipe, the inlet pipe is provided with a groove, an inlet sealing rubber plug is embedded in the groove and used for closing and sealing the inlet pipe, and the outlet sealing rubber plug is arranged in the outlet pipe. The piston is provided with a vent hole and is sealed by a vent hole rubber plug, so that the piston can be used for standing to release gas. And the piston cylinder is provided with an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe are sealed by inlet pipe and outlet pipe rubber plugs, and the inlet pipe is connected with an inlet connecting pipe, so that suspended substances in the air can be prevented from entering the piston cylinder, and various devices and convenience in use can be conveniently connected. The invention integrates the functions of extraction and storage, can simultaneously extract a working standard sample water sample, is sealed and stored, can be directly used, not only can greatly improve the experimental efficiency, but also has the advantages of reasonable and firm structure, simple operation, strong practicability and low cost.

Description

Experimental device for be used for saving liquid isotope trade sample

Technical Field

The invention relates to an experimental device, in particular to an experimental device for storing a liquid isotope standard sample. It is suitable for liquid

The storage of the isotope standard sample can provide convenience for subsequent experiments.

Background

The experimental device for storing the liquid isotope standard sample is used for storing the working standard sample (water) to provide convenience for subsequent experiments as the name suggests. At present, much research focuses more and more on the storage of working standard samples, and is used for experiments of storing liquid isotope standard samples

The choice and improvement of the device has a crucial role in the effectiveness and safety of the storage of the working standard (water).

At present, most of the adopted storage liquid isotope samples are narrow-mouth bottles, the extraction and the storage of the working samples are mostly separated,

in the actual use process, the defects of air bubbles extraction, not tight sealing and the like exist.

Disclosure of Invention

The invention aims to provide an experimental device for storing a liquid isotope standard sample, which can overcome the defects of the prior art, integrates the functions of extraction and storage, can simultaneously extract a working standard sample (water), is stored in a sealed way, can be directly used, can greatly improve the experimental efficiency, and has the advantages of simple operation and low cost.

The solution is as follows: the piston is in static fit and sealing connection with the piston cylinder, the piston is provided with a vent hole, and the vent hole rubber plug is in sealing connection with the vent hole. An inlet pipe and an outlet pipe are arranged on the piston cylinder, an inlet connecting pipe is connected to the inlet pipe, a groove is formed in the inlet pipe, an inlet sealing rubber plug is embedded in the groove and used for closing and sealing the inlet pipe, and an outlet sealing rubber plug is arranged in the outlet pipe.

By adopting the technical scheme, the piston is provided with the vent hole and the vent hole is sealed by the rubber plug, so that the piston can be used for standing to release gas. And the piston cylinder is provided with an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe are sealed by inlet pipe and outlet pipe rubber plugs, and the inlet pipe is connected with an inlet connecting pipe, so that suspended substances in the air can be prevented from entering the piston cylinder, and various devices and convenience in use can be conveniently connected. The invention integrates the functions of extraction and storage, can simultaneously extract a working standard sample (water), is sealed and stored, can be directly used, not only can greatly improve the experimental efficiency, but also has the advantages of reasonable structure, firmness, simple operation, strong practicability and low cost.

Drawings

Fig. 1 is a schematic front sectional view of an experimental apparatus for storing a liquid isotope standard sample.

Fig. 2 is a top view of an experimental setup for storing liquid isotope standards.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

In the figures 1 and 2, the glass product is a glass product, a piston assembly (1) is in static fit and sealed connection in a glass cylinder (4), two vent holes (3) are formed in the piston assembly (1), and a vent hole rubber plug (2) is in sealed connection in each vent hole (3). The glass inlet pipe is characterized in that a left glass inlet pipe and a right glass outlet pipe which are symmetrically arranged are arranged on the glass cylinder (4), an inlet rubber pipe (5) is connected to the glass inlet pipe, a groove is formed in the glass inlet pipe, and an inlet sealing rubber plug (6) is embedded in the groove and used for closing and sealing the glass inlet pipe. An outlet sealing rubber plug (7) is arranged in the glass outlet pipe.

Sampling and storing isotope working standard sample: when the working standard sample water sample is extracted, firstly, two air vents (3) and a glass outlet pipe are sealed through two air vent rubber plugs (2) and an outlet rubber plug (7), then the inlet sealing rubber plug (6) is pulled out to the height of the half of the inlet sealing rubber plug (6), an inlet rubber pipe (5) is connected with the working standard sample water sample to be extracted, then a piston (1) is pulled upwards, the water sample amount of the isotope working standard sample is extracted to occupy 2/3 of the volume of a glass cylinder (4), the inlet sealing rubber plug (6) is pressed to the bottom of a groove again, and the glass inlet pipe is closed and sealed. Then, extract two air vent rubber stoppers (2) to promote piston (1) downwards, until the bubble in the interior work standard sample water sample of glass section of thick bamboo (4), discharge to the air in through two air vent (3), and have a small amount of liquid to spill over air vent (3), at this moment, at once with two air vent rubber stoppers (2) again respectively with two corresponding air vent (3) sealed, can accomplish the sampling and the storage of isotope work standard sample.

Extracting and calibrating isotope working standard sample: by means of the injection needle of the sampler (an instrument for extracting the working standard sample in a laboratory), the injection needle of the sampler is inserted into and penetrates through the outlet rubber plug (7), the sampler piston of the injection needle of the sampler is operated, and the water sample of the sampled and stored working standard sample is extracted from the glass cylinder (4) to the required volume. Because in the process of extracting the isotope working standard sample water sample, the piston (1) can descend along with the movement of the sampler piston, the lower end surface of the piston (1) is always in sealing contact with the working standard sample water sample surface extracted, sampled and stored in the glass cylinder (4), and therefore, no air bubble can be generated in the extraction process of the isotope working standard sample. Then the needle head of the sampler is pulled out, the isotope working standard sample water sample in the sampler is sent into a high-precision isotope mass spectrometer, the ratio of deuterium to oxygen 18 isotope of the working standard sample is accurately determined by using the international standard sample, the isotope ratio is written into the label paper, and the label paper is pasted on the wall of the glass cylinder (4).

Extraction and use of working standards: the operation steps are the same as the extraction and calibration of the working standard sample, and the difference is that the isotope ratio of the working standard sample does not need to be measured, but is directly read from the label paper on the wall of the glass piston cylinder 4. The extracted working standard sample can be sent to a sample injector of the isotope mass spectrometer for standby.

Because the working standard sample liquid exists in the container, when the container is not used, the container is placed in a larger lightproof sealed container, and the solution property of the working standard sample is favorably kept better.

Claims

1. The utility model provides an experimental apparatus for be used for storing liquid isotope trade sample, a serial communication port, piston (1) and glass section of thick bamboo (4) quiet cooperation sealing connection, be provided with air vent (3) on piston (1), air vent rubber plug (2) and air vent (3) sealing connection, and import pipe and outlet pipe have been arranged on glass section of thick bamboo (4), be connected with import rubber tube (5) on the import pipe, and be provided with the recess on the import pipe, it has import sealed rubber plug (6) to embed in the recess, be used for closing and sealed import pipe, set up export sealed rubber plug (7) in the outlet pipe.