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Manual sample injector capable of controlling sample injection volume and sample injection method and application thereof

A technology of manual injection and injection volume, applied in chemical instruments and methods, laboratory containers, instruments, etc., can solve the problems of complex equipment and large volume, reduce volume and complexity, and increase convenience , The effect of preventing sample overflow

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 sampler with a controllable injection volume, a sampler method and its application in order to overcome the complex and large volume of the sampler device in the prior art. Furthermore, the method of increasing the pressure is used to inject samples, and the pressure change is moderate and controllable, which avoids the phenomenon of unstable sample injection caused by pressure fluctuations, and avoids the use of external sampling equipment, greatly reducing the volume and system complexity of the sampling device

Method used

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  • Manual sample injector capable of controlling sample injection volume and sample injection method and application thereof
  • Manual sample injector capable of controlling sample injection volume and sample injection method and application thereof
  • Manual sample injector capable of controlling sample injection volume and sample injection method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This example is used to illustrate the injection of a sample of known volume.

[0058] use as Figure 1-2 The manual sampler with controllable injection volume shown, the manual sampler includes a sample cell 2, a sample cell cover 1 and a sample outlet part 3; the sample cell cover 1 and the sample cell 2 are both cylindrical , transparent glass material, and detachably screwed to form a sleeve structure so as to seal and form a sample cavity with a volume of 100 μL. The sample outlet 3 is located on the opposite side of the sample cell 2 to the sample cell cover 1, through The movement of the sample cell cover 1 can change the volume of the sample chamber, and the sample in the sample chamber is pressed out through the sample outlet 3, the sample outlet 3 includes a straight tubular sample outlet channel 8, and one end of the sample outlet channel is The sample cell is connected, and the other end is used as a sample outlet, and an external thread is provided at the ...

Embodiment 2

[0063] This example is used to illustrate sample injection of unknown volume.

[0064] The same manual injector and microfluidic chip as in Example 1 were used.

[0065] Before starting the process, first add the sample into the manual injector, then seal the sample cell 2 with the sample cell cover 1, and make the lower end of the sample cell cover coincide with the 0 scale line of the sample cell. Then screw the external thread of the sample outlet 3 to the internal thread at the sampling port 5 of the microfluidic chip, so that the manual injector is connected to the microfluidic chip, and rotate the sample cell cover 1 to move the sample cell cover 1 downward. , the volume of the sample chamber decreases and the pressure increases. Under the action of the pressure, the sample enters the microfluidic chip through the sample outlet channel 8, observes the reading of the scale while injecting the sample, and stops when the sample cell cover coincides with the scale 2 of the s...

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Abstract

The invention relates to the field of a sample injector, and discloses a manual sample injector capable of controlling sample injection volume and a sample injection method and an application thereof.The manual sample injector comprises a sample tank (2), a sample tank cover (1) and a sample discharging part (3); the sample tank cover (1) seals the sample tank (2) to form a sample cavity; the sample discharging part (3) is located on one side, opposite to the sample tank cover (1), of the sample tank (2); and the volume of the sample cavity can be changed through the movement of the sample tank cover (1), and a sample in the sample cavity is pressed out through the sample discharging part (3). According to the manual sample injector, the pressure intensity is increased through manual airpressure to realize sample injection, so that the pressure change is mild and controllable, a phenomenon of unstable sample injection caused by pressure fluctuation is avoided, the use of external sample injection equipment is avoided, and the size and the system complexity of the sample injector are greatly reduced.

Description

technical field [0001] The invention relates to the field of sample injectors, in particular to a manual sample injector with controllable sample injection volume, a 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 detection. [0003] Micro-full analysis system, also known as lab-on-a-chip, is an anal...

Claims

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Application Information

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IPC IPC(8): G01N35/10B01L3/00
CPCG01N35/1016B01L3/5027B01L3/502715B01L2200/14B01L2200/0689
Inventor 姜慧芸孙冰金艳冯俊杰赵磊张铁
Owner CHINA PETROLEUM & CHEM CORP
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