Micro-total analysis system chip used for integral detection of heavy metal ions

A micro-total analysis system and technology of heavy metal ions, applied in the field of micro-electromechanical systems, can solve the problems of long detection time, cumbersome heavy metal ion detection process, poor real-time performance, etc., and achieve the effects of high sensitivity, rapid integrated detection, and small size.

Pending Publication Date: 2017-10-20
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

Solve the problems of cumbersome detection process of heavy metal

Method used

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  • Micro-total analysis system chip used for integral detection of heavy metal ions
  • Micro-total analysis system chip used for integral detection of heavy metal ions
  • Micro-total analysis system chip used for integral detection of heavy metal ions

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Embodiment Construction

[0042]Below in conjunction with accompanying drawing, the present invention will be further described:

[0043] Such as figure 1 As shown in , it is a schematic diagram of the main structure of the micro total analysis system chip. It is mainly composed of three functional modules: a micro-mixer 3 , a solid-phase extraction column 4 and a three-electrode amperometric detection sensor 12 . The sample and the buffer solution enter the chip from two liquid inlets 1 respectively, and are mixed at the micro-mixer 3 after passing through the Y-shaped liquid inlet channel 2 . The mixed liquid passes through the solid-phase extraction column 4, and the selective adsorbent 23 filled in the column is used to keep the tested ions in the sample in the solid-phase extraction column 4, while the interfering ions enter the waste liquid pool through the waste liquid channel 10 5, and finally discharged from the liquid outlet 6. Then, the eluent is passed through the liquid inlet 1 to wash ...

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Abstract

The invention belongs to the field of micro-electro-mechanical systems, and relates to a micro-total analysis system chip used for integral detection of heavy metal ions. Two liquid inlets of the chip communicate with a micro-mixer through a Y-shaped liquid inlet channel, the other end of the micro-mixer is connected with the liquid inlet end of a solid phase extraction column, the solid phase extraction column is filled with a selective adsorbent, the liquid outlet end of the solid phase extraction column is connected with a detection cell, the bottom of the detection cell is in contact with a three-electrode ampere detection sensor arranged in a sensor bin, the three-electrode ampere detection sensor is connected with an electrochemical workstation through an electrode lead wire arranged in an electrode lead wire bin and an Ag/AgCl electrode arranged in an internal filling solution cell, the detection cell communicates with a waste liquid channel through a waste liquid cell, and the waste liquid cell is provided with a liquid outlet. The micro-total analysis system chip has the advantages of small size, high sensitivity, good detection reappearance and stability, high integration degree and recoverable main components.

Description

technical field [0001] The invention belongs to the field of micro-electromechanical systems (Micro-electro Mechanical Systems, MEMS), and relates to a micro total analysis system chip for integrated detection of heavy metal ions. Background technique [0002] Water is the source of life, and the safety of drinking water is closely related to our life. With the rapid development of my country's economy, the mining, smelting, processing and heavy metal manufacturing industries are increasing, causing a large amount of heavy metals to enter the water body, resulting in frequent pollution incidents. Heavy metal refers to the density ≥ 5g / cm 3 There are 45 kinds of metals in total. Except for several types of heavy metals such as manganese, zinc, and iron, which are essential trace elements for life activities, most other heavy metal elements such as lead, mercury, and chromium are not essential elements for life activities. Due to their high stability, heavy metals are diffi...

Claims

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Application Information

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IPC IPC(8): G01N27/48
CPCG01N27/48
Inventor 张贺揣荣岩李新关艳霞夏贝贝
Owner SHENYANG POLYTECHNIC UNIV
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