A mno-based 2 Method for detecting pentachlorophenol in wood products by nanorods

A technology of pentachlorophenol and nanorods, which is applied in the field of analysis and detection, can solve the problems of long detection cycle, complicated operation, and huge equipment, and achieve the effects of simple operation, high sensitivity, and improved transmission rate

Active Publication Date: 2022-04-08
南京海关工业产品检测中心
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  • Application Information

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Problems solved by technology

[0003] Although a variety of methods for detecting pentachlorophenol have been developed, such as gas chromatography, high performance liquid chromatography, liquid chromatography-mass spectrometry, etc., there are still disadvantages such as complicated operation, huge equipment, long detection period and high cost.

Method used

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  • A mno-based <sub>2</sub> Method for detecting pentachlorophenol in wood products by nanorods
  • A mno-based <sub>2</sub> Method for detecting pentachlorophenol in wood products by nanorods
  • A mno-based <sub>2</sub> Method for detecting pentachlorophenol in wood products by nanorods

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Embodiment 1

[0031] Test Instruments and Consumables

[0032] MnSO 4 ·H 2 O, (NH 4 ) 2 S 2 o 8 , absolute ethanol, polyethyleneimine, trishydroxymethylaminomethane, hydrochloric acid (aladdin chemical reagent company); pentachlorophenol (Sigma chemical reagent company). Electrochemical experiments were carried out on an electrochemical workstation CHI-650E (Shanghai Chenhua Instrument Co., Ltd.). The reagents used for the screen-printed electrodes (SPE) were all analytically pure; the experimental water was ultrapure water.

[0033] MnO 2 Synthesis of Nanomaterials

[0034] 6.70g of MnSO 4 ·H 2 O and 13.69g of (NH 4 ) 2 S 2 o 8 Dissolve in 40mL of distilled water, blow N at room temperature 2 and stirred for 1 hour. The resulting mixed solution was then transferred to a Teflon-lined stainless steel autoclave (40 mL), and heated at 140° C. for 24 hours. After the reaction, the mixture was cooled to room temperature. The product was then centrifuged, washed with distilled wa...

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Abstract

The invention discloses a MnO-based 2 The invention discloses a method for detecting pentachlorophenol in wood products by nanorods, belonging to the field of analysis and detection. This method first prepares MnO 2 nanomaterials, followed by the preparation of MnO 2 Nanorod dispersion modified screen-printed electrodes by differential pulse voltammetry using MnO 2 The screen-printed electrode modified by the nanorod dispersion was used to detect the Tris-HCl buffer solution containing different concentrations of pentachlorophenol, and the relationship between the oxidation peak current of pentachlorophenol and the concentration was obtained; Standard recovery test, the content in the sample to be tested can be measured. The electrochemical detection method established by the invention has high sensitivity, safety, simple operation and low requirements for operators, and can be used for rapid detection of pentachlorophenol in wood products.

Description

technical field [0001] The invention relates to the field of analysis and detection, in particular to a MnO-based 2 A nanorod method for the detection of pentachlorophenol in wood products. Background technique [0002] Pentachlorophenol (pentach lorophenol, referred to as PCP) is an important preservative used to prevent the growth of fungi and inhibit the corrosion of bacteria. It is widely used as a wood preservative in indoor and outdoor house construction; it can also be used in cotton Anti-corrosion of natural fibers such as wool and wool during storage and transportation; it can also be used as a stabilizer for anti-corrosion and anti-mold of printing paste, and used in textile processing. It not only has strong carcinogenic, teratogenic and mutagenic effects, but also releases dioxin-like compounds when burned, causing persistent damage to the environment. It is listed as a priority pollutant and persistent pollutant by many countries including my country. Blacklist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26G01N27/30
CPCG01N27/26G01N27/30
Inventor 封亚辉潘生林戴东情袁敏许仁富张秀
Owner 南京海关工业产品检测中心
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