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Preparation method and application of current type electrochemical sensor for detecting bisphenol A

An electrochemical and sensor technology, applied in the field of rapid detection of bisphenol A in water samples, can solve the problems of poor electrochemical response and low detection sensitivity, and achieve the effects of strong conductivity, high sensitivity and rapid detection

Inactive Publication Date: 2013-07-24
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bisphenol A molecule contains phenolic hydroxyl groups, which can be electrochemically oxidized under certain conditions, but its electrochemical response on the bare glassy carbon electrode is poor, and the measurement sensitivity is low. The present invention uses a three-dimensional bicontinuous nanoporous alloy modified electrode, Significantly increase the oxidation current of bisphenol A, providing a sensitive and accurate method for the determination of bisphenol A

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of PtRu nanoporous alloy suspension

[0027] Put PtRuAl ternary alloy in 1.5 mol / L sodium hydroxide solution, corrode for 4 h, wash with ultrapure water until neutral, and dry to obtain PtRu nanoporous alloy; weigh 2.5 mg PtRu nanoporous alloy, add 5mL Ultrapure water, ultrasonic 3min, makes PtRu nanoporous alloy suspension; Wherein, PtRu nanoporous alloy, the mass ratio of Pt and Ru is 1: 0.5, and the Al mass fraction in ternary alloy is 81%.

[0028] (2) Chitosan solution preparation

[0029] Chitosan and NaCl were added into 0.3% glacial acetic acid aqueous solution to dissolve to prepare a chitosan solution. The solution contained 0.5% chitosan and 0.3 mol / L NaCl.

Embodiment 2

[0031] (1) Preparation of PtRu nanoporous alloy suspension

[0032] Put PtRuAl ternary alloy in 1.6 mol / L sodium hydroxide solution, corrode for 3 h, wash with ultrapure water until neutral, and dry to obtain PtRu nanoporous alloy; weigh 7.5 mg PtRu nanoporous alloy, add 5mL Ultrapure water, ultrasonic 3min, standby; wherein, the PtRu nanoporous alloy, the mass ratio of Pt and Ru is 1: 1; the mass fraction of Al in the ternary alloy is 83%.

[0033] (2) Chitosan solution preparation

[0034] Chitosan and NaCl were added into 0.3% glacial acetic acid aqueous solution to dissolve to prepare a chitosan solution, the solution contained 0.5% chitosan and 0.4mol / L NaCl.

Embodiment 3

[0036] (1) Preparation of PtRu nanoporous alloy suspension

[0037] Put PtRuAl ternary alloy in 1.8 mol / L sodium hydroxide solution, corrode for 2 h, wash with ultrapure water until neutral, and dry to obtain PtRu nanoporous alloy; weigh 15 mg PtRu nanoporous alloy, add 5 mL Ultrapure water, ultrasonic 3min, standby; wherein, the PtRu nanoporous alloy, the mass ratio of Pt and Ru is 1:2, and the mass fraction of Al in the ternary alloy is 85%.

[0038] (2) Chitosan solution preparation

[0039] Chitosan and NaCl were added into 0.3% glacial acetic acid aqueous solution to dissolve to prepare chitosan solution, the solution contained chitosan mass fraction of 0.5% and NaCl concentration of 0.5mol / L.

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PUM

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Abstract

The invention provides a preparation method and an application of a current type electrochemical sensor for detecting bisphenol A, belonging to the field of a nano functional material and environmental detection. The preparation method of the bisphenol A electrochemical sensor utilizes an electrode surface modification technology to modify a prepared PtRu nano porous alloy material and a chitosan solution on the surface of an electrode, and takes the electrode which is successfully modified as a working electrode to be connected to an electrochemical work station, so as to detect the bisphenol A. The electrochemical sensor disclosed by the invention has the advantages of strong selectivity, high sensitivity, and simplicity and rapidness in operation, and is suitable for detecting the bisphenol A in a water sample.

Description

technical field [0001] The invention belongs to the field of nano functional materials and environmental detection, and provides a preparation method and application of an amperometric electrochemical sensor for detecting bisphenol A, which is used for rapid detection of bisphenol A in water samples. Background technique [0002] Bisphenol A, scientific name 2, 2-bis(4-hydroxyphenyl) propane, is a very important chemical raw material, belongs to environmental hormones, and is the main raw material for the production of epoxy resin, polycarbonate and polyoxyphenol. Animal experiments have found that bisphenol A has the effect of simulating estrogen, even at a very low dose, it can cause precocious female puberty, decreased sperm count, and prostate growth in animals. In addition, some data show that bisphenol A has certain embryotoxicity and teratogenicity, which can significantly increase the occurrence of ovarian cancer, prostate cancer, leukemia and other cancers in animal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
Inventor 李燕李贺魏琴杜斌于海琴朱宝存张勇吴丹马洪敏
Owner UNIV OF JINAN
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