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Seven-channel molecularly imprinted polymer sensor array, method for detecting azopigment by using sensor array and application of seven-channel molecularly imprinted polymer sensor array in detection of azopigment

A sensor array and molecular imprinting technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problem that the sensor is rarely seen

Inactive Publication Date: 2014-09-10
XINJIANG UYGUR AUTONOMOUS REGION PROD QUALITY SUPERVISION & INSPECTION RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, little is known about sensors that distinguish between structurally similar pigments

Method used

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  • Seven-channel molecularly imprinted polymer sensor array, method for detecting azopigment by using sensor array and application of seven-channel molecularly imprinted polymer sensor array in detection of azopigment
  • Seven-channel molecularly imprinted polymer sensor array, method for detecting azopigment by using sensor array and application of seven-channel molecularly imprinted polymer sensor array in detection of azopigment
  • Seven-channel molecularly imprinted polymer sensor array, method for detecting azopigment by using sensor array and application of seven-channel molecularly imprinted polymer sensor array in detection of azopigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: Synthesis of Imprinted Polymer P1

[0044] N 2 Under purging, 0.33mmol of template B1 was added to 100mL Schlenk bottles, and then 40mL of propylene glycol-ethanol mixture (v:v=1:3) was injected, and methacrylic acid (MAA, 0.27mL, 3.2mmol ) and ethylene glycol dimethacrylate (EDMA, 2.5mL, 12.80mmol), stirred overnight at room temperature to dissolve, and the solution was transparent. Place the Schlenk bottle in a 60 °C water bath, N 2 Under protection, the initiator AIBN (108mg, 0.32mmol) was added, stirred vigorously for 4h, and then kept for 6h. The mixture in the Schlenk bottle was poured into a sand core funnel and filtered, and the filtrate was discarded. The polymers were respectively transferred into Soxhlet extractors, and the eluent was reflux washing with 100 mL of glacial acetic acid-methanol mixture (v:v=1:9) for 24 h, and then reflux washing with 100 mL of acetonitrile for 24 h. The polymer was dried in a vacuum oven at 50°C for 48 hours. Im...

Embodiment 2

[0045] Example 2: Synthesis of Imprinted Polymer P2

[0046] The experimental procedure is the same as in Example 1, except that the template B1 is replaced by B2.

Embodiment 3

[0047] Example 3: Synthesis of Imprinted Polymer P3

[0048] The experimental procedure is the same as in Example 2, except that the template B1 is replaced by B3.

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PUM

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Abstract

The invention discloses a seven-channel molecularly imprinted polymer sensor array which is characterized by comprising 6 imprinted polymers and a non-imprinted polymer, wherein the imprinted polymers P1-P6 are prepared by reacting templates B1-B6 with a functional monomer, a cross-linking agent and an initiating agent in a solvent at an inert atmosphere; the non-imprinted polymer P0 is prepared by reacting the functional monomer, the cross-linking agent and the initiating agent in the solvent at the inert atmosphere; the templates B1-B6 are amaranth, tartrazine, sunset yellow, acid orange 2, basic orange 2 and para red respectively; the functional monomer is an olefinic bond type unsaturated monomer. The invention also relates to a method for detecting an azopigment and application of the seven-channel molecularly imprinted polymer sensor array in selective identifying and distinguishing of the azopigment.

Description

technical field [0001] The invention relates to a seven-channel molecularly imprinted polymer sensor array and a method and application thereof for detecting azo pigments. Background technique [0002] Industrial dyes and certain nitrogen-substituted aromatic ring biotransformation products are toxic and even carcinogenic, so once these substances enter the food, they will seriously affect health. At present, more than 20 kinds of harmful pigments have been detected in food, including Sudan Red I to V, Para Red, Rhodamine B, Acid Orange II, Acid Red 7B, Metaramine Yellow, Auramine, Congo Red, Cream Yellow, Solvent Red I, Malachite Green, Leuco Malachite Green, Ponceau 3R, Ponceau MX and Acid Orange SS. The detection of various pigments remains highly challenging by traditional chromatographic methods. Therefore, it is of high application value to develop an effective and low-cost detection method to carry out various pigment detection. [0003] Molecularly imprinted polym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/33C08F222/14C08F220/06C08J9/26
Inventor 龙泽荣鹿毅
Owner XINJIANG UYGUR AUTONOMOUS REGION PROD QUALITY SUPERVISION & INSPECTION RES INST
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