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Multi-parameter detecting device for water quality based on manual injector and detecting method

A testing equipment and manual sampling technology, applied in chemical instruments and methods, preparation of test samples, instruments, etc., can solve the problems of reducing the volume of the sampling device, the complexity of the system, the complexity of the device, the large volume, etc. Volume and complexity, increasing ease of loading and unloading, preventing sample spillage

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 water quality multi-parameter detection equipment and detection method and its application based on the manual sampler in order to overcome the complex and bulky problems 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 sample injection equipment, greatly reducing the volume of the sample injection device and the complexity of the system

Method used

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  • Multi-parameter detecting device for water quality based on manual injector and detecting method
  • Multi-parameter detecting device for water quality based on manual injector and detecting method
  • Multi-parameter detecting device for water quality based on manual injector and detecting method

Examples

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Effect test

Embodiment 1

[0065] This example is used to illustrate the injection of a sample of known volume.

[0066] Using a water quality multi-parameter detection device based on a manual sampler, the device includes such 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...

Embodiment 2

[0071] This example is used to illustrate sample injection of unknown volume.

[0072] Use the same water quality multi-parameter detection equipment as in Example 1.

[0073]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 ...

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Abstract

The invention relates to the field of micro total analysis chips, and discloses a multi-parameter detecting device for water quality based on a manual injector and a detecting method. The multi-parameter detecting device for water quality comprises a manual injector capable of controlling a injection volume. The manual injector comprises a sample cell (2), a sample cell cover (1) and a sample outlet (3). The sample cell cover ( 1) seals the sample cell (2) to form a sample chamber, and the sample outlet (3) is located on one side of the sample cell (2) opposite to the sample cell cover (1). Bymoving the sample cell cover (1), the volume of the sample chamber can be changed and a sample in the sample chamber is extruded out of the sample outlet (3). The manual injector of the invention injects the sample by means of manually compressing air to increase a pressure, so that change of the pressure is gentle and controllable, thereby avoiding phenomenon of unsteady injection caused by thepressure fluctuation, and avoiding use of an external injection device, and greatly reducing volume of the injector and complexity of the system.

Description

technical field [0001] The invention relates to the field of micro-full analysis chips, in particular to a water quality multi-parameter detection device and detection method based on a manual sample injector. 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 analysis tec...

Claims

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Application Information

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IPC IPC(8): G01N33/18G01N35/10G01N1/28B01L3/00
CPCG01N33/18G01N35/10G01N1/28B01L3/502707B01L2200/027
Inventor 孙冰姜慧芸金艳朱红伟王林姜杰徐伟
Owner CHINA PETROLEUM & CHEM CORP
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