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Integrated electrolytic tank system and method for in-situ electrochemical mass spectrum detection system

An in-situ electrochemical and mass spectrometry detection technology, applied in the field of electrochemical detection, can solve the problems of three-electrode electrolytic cells that are difficult to diversify, difficult to control temperature observation, etc., and achieve the effect of convenient and quick installation and disassembly, and simple overall operation

Active Publication Date: 2016-01-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the expansion of the application range of electrochemical mass spectrometry, it is difficult for ordinary three-electrode electrolytic cells to meet its diverse requirements.
However, because electrochemical mass spectrometry needs to collect electrochemical and mass spectrometry signals at the same time, it is difficult to ensure temperature control without affecting the observation of the electrodes.

Method used

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  • Integrated electrolytic tank system and method for in-situ electrochemical mass spectrum detection system

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Experimental program
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Effect test

specific Embodiment approach 1

[0021] Specific implementation mode one: as figure 1 As shown, the integrated electrolytic cell system for the in-situ electrochemical mass spectrometry detection system provided in this embodiment consists of three parts: a three-electrode electrolytic cell, an electrolyte replacement device and a built-in temperature control device, wherein:

[0022] The three-electrode electrolytic cell is composed of an auxiliary electrode electrolytic cell 6 , a research electrode electrolytic cell 4 and a reference electrode electrolytic cell 5 , and the research electrode electrolytic cell 4 communicates with the auxiliary electrode electrolytic cell 6 and the reference electrode electrolytic cell 5 respectively.

[0023] The electrolyte replacement device is composed of a liquid storage tank 1, a waste liquid tank 13, a peristaltic pump A2, a peristaltic pump B12 and a connecting pipe. The liquid storage tank 1 is connected to the peristaltic pump A2 through the connecting pipe, and the...

specific Embodiment approach 2

[0041] Specific implementation mode two: In order to detect and study the reaction mechanism of the electrode 3 to the electrooxidation of methanol, the electrode electrolytic cell 4 is injected with 0.5MH 2 SO 4 +0.1MCH 3 OH, auxiliary electrode electrolytic cell 6 and reference electrode electrolytic cell 5 injected with 0.5MH 2 SO 4 , so that the three-electrode electrolytic cell Unicom. Apply a potential to the research electrode 3, perform constant potential adsorption, and then turn on the peristaltic pump A2 and peristaltic pump B12, so that the flow rate of the peristaltic pump is 50mL / min, until the electrolyte flow in the storage tank 1 is the solution volume in the research electrode electrolytic cell 4 5 times or more, start the potential sweep experiment, and measure the mass spectrometry signal through the mass spectrometer inlet at the same time. Afterwards, a resistance wire 7 with a diameter of 1mm is used to spirally place it in a 1cm built-in glass tube,...

specific Embodiment approach 3

[0043] Specific implementation mode three: In order to detect and study the reaction mechanism of the electrode 3 to the electrooxidation of methanol, the electrode electrolytic cell 4 is injected with 0.5MH 2 SO 4 +0.5MCH 3 OH, inject 0.5MH into auxiliary electrode electrolytic cell 6 and reference electrode electrolytic cell 5 2 SO 4 , so that the three-electrode electrolytic cell Unicom. Apply a potential to the research electrode 3, perform constant potential adsorption, and then turn on the peristaltic pump A2 and peristaltic pump B12, so that the flow rate of the peristaltic pump is 200mL / min, until the excess electrolyte flow in the storage tank 1 is the solution volume in the research electrode electrolytic cell 4 5 times or more, start the potential sweep experiment, and measure the mass spectrometry signal through the mass spectrometer inlet at the same time. Afterwards, the resistance wire 7 with a diameter of 1 mm is used to spirally place it in the built-in gl...

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Abstract

The invention discloses an integrated electrolytic tank system and method for an in-situ electrochemical mass spectrum detection system. The system comprises a three-electrode electrolytic tank, an electrolyte replacement device and a built-in temperature control device. The three-electrode electrolytic tank is composed of an auxiliary electrode electrolytic tank, a research electrode electrolytic tank and a reference electrode electrolytic tank. The electrolyte replacement device is composed of a liquid storage tank, a waste liquid tank, a peristaltic pump and connecting pipes. The built-in temperature control device is composed of a built-in glass tube, a resistance wire, a thermocouple, a transformer and a relay. According to the system, smooth temperature control can be achieved; meanwhile, due to the built-in design, interference with sight can be avoided, and observation of an electrode and mass spectrum connection port will not be influenced; besides, electrolyte flow can be controlled by controlling switches of upper and lower electrolytic tank electrolyte ports, electrolyte replacement can be achieved through flowing of a certain quantity of electrolyte, and meanwhile circuit connection can be kept.

Description

technical field [0001] The invention belongs to the technical field of electrochemical detection, and relates to an electrolytic cell for simultaneously detecting electrochemical and mass spectrum signals, in particular to an electrolytic cell system capable of realizing built-in temperature control and replacement of electrolyte. Background technique [0002] In the development of electrochemical science, modern electrochemical analysis techniques for studying the products or intermediate products of electrochemical reactions have played a very important role. Among the many electrochemical spectroscopy techniques, in situ electrochemical mass spectrometry has the ability to analyze volatile products and intermediate products with the change of electrode potential, and the analysis results are intuitive and reliable, making in situ electrochemical mass spectrometry Become a very effective method of on-site analysis. With the expansion of the application range of electroche...

Claims

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Application Information

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IPC IPC(8): G01N27/28G01N27/62
Inventor 高云智屈云腾李灿王龙尹鸽平
Owner HARBIN INST OF TECH
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