Special electrogenerated chemiluminescence detection cell for screen printing electrodes

Abstract

The invention discloses a special electrogenerated chemiluminescence detection cell for screen printing electrodes. The special electrogenerated chemiluminescence detection cell comprises a reaction cell, a connecting plate and a bracket for fixing the reaction cell and the connecting plate, wherein the bracket sleeves outside the reaction cell; a lead wire end of a screen printing electrode to bedetected is fixed on the connecting plate, and an electrode end is folded in an L shape and suspended at the lower part of the connecting plate; and when the lower part of the connecting plate is inserted into the bracket and fixed to the bracket, the electrode face of the screen printing electrode completely extends into the reaction cell and is placed facing towards a light window. Because theelectrode face is placed facing towards the light window, light generated by a luminescent substance on the electrode surface by virtue of electrochemical / chemical reaction is completely projected onto a detector through the light window and the signal response is great; and the position of the screen printing electrode in the reaction cell is fixed by virtue of the bracket and the connecting plate, conditions of unsteady fixation and change of position of the electrode cannot occur in detection, induction of optical signals is stable and testing errors are small.

Description

technical field [0001] The invention relates to an electrochemiluminescence detection device, in particular to a special electrochemiluminescence detection cell for screen printing electrodes. Background technique [0002] Electrochemiluminescence (ECL) is a chemiluminescence phenomenon caused directly or indirectly by an electrochemical reaction. A certain voltage or a certain current is applied to a system containing a chemiluminescent substance through an electrode, and the electrode product or the electrode product and the system A chemical reaction occurs between other additional coexisting substances in the electrode to produce chemiluminescence, or the luminescent substance directly undergoes a redox reaction on the electrode to produce a certain unstable intermediate state substance that decomposes and emits light. It is the product of the combination of electrochemistry and chemiluminescence, and has the advantages of both. Its operation is simple and fast, with hi...

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Problems solved by technology

[0005] Purpose of the invention: The present invention aims at problems such as weak light signal and unstable fixation during ECL detection of existing sheet-shaped printed electrodes, and provides a special electrochemiluminescence detection cell for screen-printed electrodes. The detection device can use The light generated by the electrochemical / chemical reaction of the luminescent substance on the electrode surface is all projected onto the detector through the light window, and the signal response is large.

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