A kind of manufacturing method of printed electrode for portable heavy metal detection
A printing electrode and manufacturing method technology, applied in the direction of printed circuit manufacturing, printed circuit, electrical components, etc., can solve problems such as errors, poor electrode repeatability, hydrogen ion interference of printed electrodes, etc., to achieve the effect of ensuring stability and improving production efficiency
Active Publication Date: 2016-09-21
浙江扬清芯片技术有限公司
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Problems solved by technology
However, the electrodes prepared by the current printing electrode manufacturing process still have technical problems of poor repeatability. The main reasons for this problem are the following two aspects: first, the printing process is backward, and too many manual operations lead to errors
Secondly, the stability of the reference electrode of the printed electrode has not been good, which not only easily causes the interference of hydrogen ions generated by the printed electrode during the enrichment process, but also the degree of negative shift between different electrodes is not the same, causing the heavy metal detector to automatically take peak not allowed
Method used
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[0023] as attached figure 1 Shown, a kind of manufacturing method of the printed electrode that is used for portable heavy metal detection, it comprises the following several steps: First, print the conductive layer of carbon paste on PC base material by roll-to-roll printing technology, dry in oven; Overprint again The Ag / AgCl reference electrode is dried in an oven; finally, the electrode insulating layer is overprinted to determine the area of the working electrode; the printed electrode is connected to a multi-channel electrochemical workstation, and a bismuth film is electroplated on the surface of the working electrode, and the deposition solution is bismuth nitrate 2×10 -3 mol / L, potassium bromide 0.1mol / L, hydrochloric acid 1mol / L, deposition time is 30s. Finally, rinse the pretreated printed electrode with a large amount of distilled water, dry it, and put it into a sealed bag. When measurement is needed in the field, the printed electrode is unpacked and connecte...
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The invention relates to a manufacturing method of a printing electrode for portable heavy metal detection. The manufacturing method is characterized by comprising the following steps: printing a carbon paste conductive layer, chromatographing a Ag / AgCl reference electrode, chromatographing an electrode insulation layer, electroplating a Bismuth film on a surface, washing out, airing, and filling into a hermetic bag. According to the manufacturing method of the printing electrode for portable heavy metal detection, the repeatability of printing carbon electrodes in batches can be greatly improved, and the problem of poor repeatability of the printing electrode when the printing electrode is used for carrying out voltammetry test on heavy metal ions with same concentration is solved. The printing electrode can be packaged directly, preprocess has no need to be carried out while field test is carried out, and the printing electrode can be used for detecting heavy metal ions such as plumbum, cadmium, copper and zinc in water quality.
Description
technical field [0001] The invention belongs to the technical field of heavy metal detection equipment, and specifically relates to a method for manufacturing a printed electrode of a portable heavy metal meter, which realizes field rapid detection of heavy metal ions such as lead, cadmium, copper, and zinc. Background technique [0002] Heavy metal ions can have harmful effects on the environment and the human body. It is of great significance to detect the content of heavy metals in the environment. environmental protection equipment. The ability to display the changes in the content of heavy metal elements contained in the liquid in real time has extremely important reference value for people to grasp the environmental safety. [0003] At present, there are many types of portable heavy metal detectors on the market, but the operation steps of most of them are cumbersome, the working electrode needs to be polished, and the reference electrode needs to be maintained, so it...
Claims
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IPC IPC(8): H05K3/00G01N27/26
Inventor 叶嘉明董明建浦鹏
Owner 浙江扬清芯片技术有限公司