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Method for detecting pentachlorophenol in wood products based on MnO2 nanorods

A pentachlorophenol and nanorod technology, applied in the field of analysis and detection, can solve the problems of long detection period, huge equipment, complicated operation, etc., and achieve the effects of simple operation, high sensitivity and low operator requirements

Active Publication Date: 2021-07-23
南京海关工业产品检测中心
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  • Abstract
  • Description
  • Claims
  • 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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  • Method for detecting pentachlorophenol in wood products based on MnO2 nanorods
  • Method for detecting pentachlorophenol in wood products based on MnO2 nanorods
  • Method for detecting pentachlorophenol in wood products based on MnO2 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. Then the resulting mixed solution was transferred to a polytetrafluoroethylene-lined stainless steel autoclave (40 mL), and heated at 140 °C for 24 h. After the reaction, the mixture was cooled to room temperature. The product was then centrifuged, washed with ...

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Abstract

The invention discloses a method for detecting pentachlorophenol in wood products based on MnO2 nanorods, and belongs to the field of analysis and detection. The method comprises the following steps: firstly preparing a MnO2 nano material, then preparing a MnO2 nanorod dispersion liquid modified screen-printed electrode, and detecting Tris-HCl buffer solutions containing pentachlorophenol with different concentrations by using the MnO2 nanorod dispersion liquid modified screen-printed electrode by using differential pulse voltammetry to obtain the relationship between the pentachlorophenol oxidation peak current and the concentration; and pretreating a to-be-detected sample, and carrying out standard recovery test to obtain the content of the to-be-detected sample. The electrochemical detection method established by the invention is high in sensitivity, safe, simple to operate and low in requirements on operators, and can be used for rapidly detecting 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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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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