Manual sample injector for sample pretreatment, manual sample injection method and application of manual sample injector

A sample pretreatment and manual sample injection technology, which is applied in the preparation of test samples, instruments, and analytical materials, etc., can solve the problems of complex and time-consuming pretreatment operations, reduce volume and complexity, expand application range, and reduce usage Effect

Pending Publication Date: 2019-11-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a manual sample injector and a manual sample injection method for sample pretreatment in order to overcome the complex and time-consuming pretreatment operation existing in the prior art, and the manual sample injector is provided with a pretreatment part , so that the pretreatment process is completed while adding the sample, eliminating the need for a separate pretreatment operation, simplifying the device and saving time

Method used

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  • Manual sample injector for sample pretreatment, manual sample injection method and application of manual sample injector
  • Manual sample injector for sample pretreatment, manual sample injection method and application of manual sample injector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This example is used to illustrate a manual sampler for filtration pretreatment.

[0055] The manual sample injector used comprises a piston 1, a sample pool 2, a pretreatment part 3 and a sample outlet part 4, and the piston 1, the sample pool 2 and the pretreatment part 3 are all cylindrical and transparent glass materials.

[0056] The preprocessing unit 3 is a filter module. The filter module is structured as figure 2 As shown, a polypropylene fiber filter disc is arranged inside; a sample inlet is arranged on the top, and an internal thread is arranged on the side wall of the sample inlet. A sample outlet is set at the bottom of the sample pool 2, an external thread is provided on the side wall of the sample outlet, the sample inlet of the pretreatment part 3 is screwed with the sample outlet of the sample pool 2, and the pretreatment part 3 and the sample pool 2 are screwed together. Removably sealed connection.

[0057] The sample outlet of the pretreatment p...

Embodiment 2

[0061] This example is used to illustrate the manual sampler for enrichment pretreatment.

[0062] The same manual injector as in Example 1 was used, except that the pretreatment part 3 was an enrichment module, and functional silica gel for enriching organic matter in the sample was provided inside.

[0063] Before starting the sample injection, open the piston 1, inject 1mL of turbid water sample into the sampler, close the piston 1, screw the sampler with the inlet of the micro-analysis chip, and then push the piston 1 to make the volume of the sample chamber Shrinking, the sample enters the micro total analysis chip for parameter analysis after being enriched with functional silica gel in the pretreatment part 3.

[0064] Remove the sampler from the micro-analysis chip and install it on another micro-analysis chip, open the piston 1, inject a certain amount of organic solvent such as methanol into the sample pool, cover the piston again and rotate it downwards. Pushing fo...

Embodiment 3

[0066] This example is used to illustrate a manual injector for pretreatment reactions.

[0067] The same manual injector as in Example 1 is used, the difference is that the pretreatment part 3 is a reaction reagent module, which is provided with mercury sulfate reagent for removing chloride in the water sample, and the reagent is sealed by a sieve plate.

[0068] Before starting the sample injection, open the piston 1 and inject 1mL of turbid water sample into the injector. The water sample contains the oxygen-consuming organic matter to be detected (the detection index is COD). The sample inlet of the chip is screwed, and then the piston 1 is pushed to reduce the volume of the sample chamber. The sample to be tested enters the pretreatment part under pressure, and the solid impurities in the water are removed through the filter module, and the chlorine in the water sample is removed through the reaction module. After compounding, enter the micro total analysis chip for analy...

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Abstract

The invention relates to the field of sample injectors, and discloses a manual sample injector for sample pretreatment, a sample injection method and an application of the manual sample injector. Themanual sample injector comprises a piston, a sample cell, a pretreatment part and a sample-out part, wherein the pretreatment part and the sample cell are detachably and hermetically connected; the pretreatment part is connected with the sample-out part and is used for carrying out sample pretreatment; the piston seals the sample cell to form a sample cavity; the sample-out part is located on theside, opposite to the piston, of the pretreatment part; and through the movement of the piston, the capacity of the sample cavity can be changed and the sample in the sample cavity passes through thepretreatment part and then is pressed out through the sample-out part. The manual sample injector is internally provided with the pretreatment part, so that the pretreatment process is completed during the sample injection, thereby saving the operation of carrying out pretreatment separately, simplifying the device and saving the time.

Description

technical field [0001] The invention relates to the field of sample injectors, in particular to a manual sample injector for sample pretreatment, a manual sample injection method and an application thereof. Background technique [0002] While the development of the world economy and industry has brought great convenience to human beings, it has also increased the number and types of pollutant emissions, and environmental protection problems have become increasingly serious. While vigorously developing all kinds of sophisticated analytical instruments and detection technologies, small, portable, simple and fast analytical technologies have also become a major research hotspot, to complement large instruments due to cumbersome operation, heavy maintenance workload, and the impact on the laboratory environment. The requirements are high, and it is difficult to be used for on-site testing. [0003] Micro-full analysis system, also known as lab-on-a-chip, is an analysis technolo...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N35/10
CPCG01N1/28G01N35/10
Inventor 姜慧芸孙冰朱红伟姜杰赵磊石宁
Owner CHINA PETROLEUM & CHEM CORP
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