Carbon dioxide biochemical analysis dry plate and preparation method thereof
A carbon dioxide and biochemical analysis technology, applied in the field of blood gas biochemical sensors, can solve problems affecting potential stability and response time, poor response lower limit of ion-selective membrane, insufficient purity of metal layer, etc., to improve measurement accuracy and long-term stability, Suitable for large-scale industrial production and easy to integrate
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[0033] The present invention will be described in detail in conjunction with the accompanying drawings and specific embodiments.
[0034] Such as figure 1 As shown, the carbon dioxide biochemical analysis dry film includes a support layer 1 , a carbon dioxide selective electrode 2 , an insulating layer 3 , and a salt bridge 4 .
[0035] Such as figure 2 As shown, the carbon dioxide selective electrode includes: a silver layer 21 , a silver chloride layer 22 , a reference layer 23 , a carbonate ion selective membrane 24 , and a buffer layer 25 .
[0036] The specific implementation steps are as follows.
[0037] A silver layer is plated on the surface of the polyethylene terephthalate by electroless plating to prepare the silver layer 21 .
[0038] The first 2 / 3 of the silver layer 21 is oxidized by chemical method. After immersing the contact electrode at the site to be oxidized in 0.1 mol / L ferric chloride solution for 60 seconds, take it out, wash it with pure water and d...
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