Application of a polymelamine modified electrode
A polymelamine-modified electrode technology, which is applied in the research fields of electroanalytical chemistry and food chemistry, can solve problems that have not been reported, and achieve good current response
Active Publication Date: 2021-04-27
CHANGZHOU UNIV
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Problems solved by technology
There have been reports on the determination of nitrite and tartrazine respectively on polymers, but there has been no report on the simultaneous detection of nitrite and tartrazine on polymelamine
Method used
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Embodiment 1
[0019] The invention simultaneously detects nitrite and tartrazine, adopts a three-electrode system, polymelamine-modified electrode is a working electrode, a platinum plate electrode is a counter electrode, a saturated calomel electrode is a reference electrode, and the electrolyte is 0.1 of pH 4.0 M phosphate buffer solution, under the above conditions, use differential pulse voltammetry to detect nitrite and tartrazine simultaneously, from figure 1 It can be seen that the oxidation peaks of nitrite and tartrazine appeared at the same time. It can be concluded that the polymelamine modified electrode is effective for simultaneous detection of nitrite and tartrazine.
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The invention relates to the application of a polymelamine modified electrode. The method comprises the following steps: preparation of a polymelamine modified electrode, simultaneous detection of nitrite and tartrazine by the polymelamine modified electrode. The beneficial effect of the invention is that the polymelamine modified electrode has good current response to nitrite and tartrazine.
Description
technical field [0001] The invention relates to the application of a polymelamine modified electrode, belonging to the research fields of electroanalytical chemistry and food chemistry. [0002] technical background [0003] Nitrite is often used as a preservative in food because it prevents bacterial growth. The World Health Organization and the EU Food Science Committee set the maximum intake of nitrite per person per day as 0.07 mg nitrite ion / kg. Excess nitrite can combine with divalent iron hemoglobin to form trivalent iron hemoglobin, resulting in a A condition called "blue baby syndrome". Therefore, it is necessary for the determination of nitrite in food. [0004] Tartrazine is an orange monoazopyrazolone dye and a widely used food coloring agent, often found in foods such as beverages and candies. Excess tartrazine can not only cause multiple adverse reactions such as allergies and ADHD in children, but also have serious effects on the liver and kidneys in the hum...
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IPC IPC(8): G01N27/32G01N27/26
CPCG01N27/26G01N27/32
Inventor 孔泳王雪青吴大同
Owner CHANGZHOU UNIV