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Sample pretreatment device capable of automatically identifying liquid level height and sample treatment device

A technology of sample pretreatment and liquid level height, applied in the field of analytical chemistry, can solve the problems of many operations required, high cost, complicated centrifugation operation, etc., and achieve the effect of avoiding centrifugation operation, precise pipetting, and simple operation

Pending Publication Date: 2020-04-24
天津博纳艾杰尔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the centrifugation operation is more complicated, and the centrifugation process takes a long time. During the solid-liquid separation after centrifugation, there will be problems such as adsorbent particles entering the upper liquid.
In addition, the existing QuEChERS needs to transfer the liquid from the previous step to the container of the next step by pipetting between each step, which requires many operations and makes the cost of automation relatively high

Method used

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  • Sample pretreatment device capable of automatically identifying liquid level height and sample treatment device
  • Sample pretreatment device capable of automatically identifying liquid level height and sample treatment device
  • Sample pretreatment device capable of automatically identifying liquid level height and sample treatment device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] A sample pretreatment device that automatically recognizes the liquid level, such as figure 1 As shown, the main pipe 1 made of polypropylene material, the primary pipe 2 and the secondary pipe 3 are connected in parallel, the distance between the main pipe 1 and the primary pipe 2, the primary pipe 2 and the secondary pipe 3 A through hole is provided; the top of the main pipe 1 is covered with a top cover 11 on which an electrode 12 is connected; the bottom of the main pipe 1 is connected with a piston 13 .

[0079] The main pipe 1 is a hollow cylindrical structure, and the hollow interior is also a cylindrical structure with a vertical axis and an inner diameter of 5 cm. The top of the main pipe 1 is covered with a top cover 11 (polypropylene material). The top cover 11 is a cylindrical groove structure with an open end, the opening is vertically downward, and the thickness of the bottom surface of the groove is 5mm. Bottom abutment. Two independent and parallel el...

Embodiment 2

[0086] A sample pretreatment device that automatically recognizes the liquid level, such as figure 2 Shown, the difference with embodiment 1 is:

[0087] (1) Two wire electrodes 12 are respectively located on both sides of the pipe wall of the main pipe 1, and can be in contact with the solution in the main pipe 1. One of the wire electrodes 12 is inserted in the first through hole 21, and the other wire electrode 12 is inserted into the first through hole 21. Located in the side wall of the main pipe 1 opposite to the first through hole 21, the lengths of the two wire electrodes 12 are both 10 mm;

[0088] (2) the inner diameter of the main pipe 1 is 4cm, the groove bottom surface thickness of the top cover 11 is 3mm, the peripheral length of the first-level attached pipe 2 and the second-level attached pipe 3 is 2cm, and 200mg C18, 150mgPSA, 50mg graphitized carbon adsorbent.

[0089] Except above-mentioned difference, the structure of all the other parts and connection r...

Embodiment 3

[0092] A sample pretreatment device that automatically recognizes the liquid level, such as image 3 As shown, the main pipe 1 made of polypropylene material and the first-stage attached pipe 2 are connected in parallel, and a first through hole 21 is arranged between the main pipe 1 and the first-stage attached pipe 2; the top of the main pipe 1 is covered with a top cover 11, and the top An electrode 12 is connected to the cover 11 ; an inner plug 14 is arranged under the top cover 11 , and a piston 13 is connected to the bottom of the main pipe 1 .

[0093] The main pipe 1 is a hollow cylindrical structure, and the hollow interior is also a cylindrical structure with a vertical axis and an inner diameter of 3 cm. The top of the main pipe 1 is covered with a top cover 11. The top cover 11 is a cylindrical groove structure with one end open. The opening is vertically downward. Two independent and parallel electrodes 12 are vertically disposed on the top surface of the top co...

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Abstract

The invention provides a sample pretreatment device capable of automatically identifying liquid level height and a sample treatment device, and relates to the technical field of analytical chemistry.The sample pretreatment device comprises a main pipe and one or more auxiliary pipes connected with the main pipe in parallel, wherein through holes are formed between the adjacent main pipe and the auxiliary pipe and between the adjacent auxiliary pipes, and filtering pieces for preventing an adsorbent from escaping are arranged on the through holes; and the bottom of the main pipe is connected with a driving piece for driving the bottom to move up and down, and the upper end of the main pipe is connected with a detection piece for identifying the liquid level height. Optionally, the main pipe is filled with an extracting solution. The sample pretreatment device can rapidly realize extraction, pipetting and collection of a sample solution, so that the separation effect of the sample solution and the adsorbent is better, and the sample pretreatment device has the advantages of capability of realizing accurate pipetting, simplicity in operation, low automation cost and the like.

Description

technical field [0001] The invention relates to the technical field of analytical chemistry, in particular to a sample pretreatment device and a sample processing device for automatically identifying liquid level heights. Background technique [0002] The detection of chemical and biological components in the fields of food safety, environmental protection, and pharmaceutical research and development has gradually become a content closely related to people's daily life. This includes the determination of the blood concentration of the drug after the patient takes the medicine, the determination of the metabolites in the urine; the determination of the pesticide residues or other harmful substances in the food (such as malachite green, Sudan red), the determination of nutrients; the determination of harmful substances in water and air determination. Regardless of the detection method used in all the above detection processes, most of them must first undergo sample pretreatme...

Claims

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Application Information

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IPC IPC(8): G01N33/02G01N1/38G01N1/34
CPCG01N33/025G01N33/02G01N1/38G01N1/34
Inventor 王宛王茹意李艳爽许豪威赵阳高鸣黄明吴晓爽
Owner 天津博纳艾杰尔科技有限公司
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