Method for preparing electropolymerized sulfosalicylic acid modified glassy carbon electrode and application of glassy carbon electrode in measurement of tryptophan
A technology of sulfosalicylic acid and glassy carbon electrodes, applied in the field of electrochemical analysis and detection, to achieve the effects of easy operation, improved sensitivity, good reproducibility and stability
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[0017] The preparation method and steps of the modified carbon paste electrode in the present embodiment are as follows:
[0018] (1) Pretreatment of the glassy carbon electrode: firstly, the glassy carbon electrode is coated with 0.05 μm Al 2 o 3 The polishing powder and suede are polished to a mirror surface, and then ultrasonically cleaned with distilled water, dilute nitric acid solution, absolute ethanol and double distilled water in sequence, and then used.
[0019] (2) A use and method of use as an electrochemical sensor for tryptophan in the process of detecting the concentration of tryptophan, the use of which is: the modified glassy carbon electrode can be directly used for the electrochemical determination of tryptophan; its use The method and measurement method are as follows: the glassy carbon electrode modified by electropolymerization sulfosalicylic acid is used as the working electrode, the saturated calomel electrode is used as the reference electrode, and th...
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