Application of poly-melamine modified electrode
A technology of polymelamine and modified electrodes, applied in the research fields of electroanalytical chemistry and food chemistry, can solve problems such as unreported, and achieve the effect of good current response
Active Publication Date: 2019-09-17
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 electrodes are used as working electrodes, platinum sheet electrodes are used as counter electrodes, saturated calomel electrodes are used as reference electrodes, and the electrolyte solution 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 an application of a poly-melamine modified electrode. A method comprises the following steps: preparing the poly-melamine modified electrode, and simultaneously detecting nitrite and lemon yellow by the poly-melamine modified electrode. The method has the beneficial effects that the poly-melamine modified electrode has good current response to the nitrite and the lemon yellow.
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...
Claims
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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