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Pentachlorophenol detection method

A pentachlorophenol and detection method technology, which is applied in the detection field of pentachlorophenol, can solve the problems of damaged instruments, polluted chromatographic columns, complicated environmental samples, etc., and achieves the effects of high detection sensitivity and shortened analysis time

Active Publication Date: 2016-01-13
WEIFANG MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These detection methods generally have high sensitivity. However, the environmental samples are complex, and impurities often contaminate the chromatographic column and even damage the instrument. The complicated sample pretreatment process is still inevitable.

Method used

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Examples

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Embodiment 1

[0033] A method for detecting pentachlorophenol, the method comprising the following steps:

[0034] S1. Preparation of solid phase microextraction silk

[0035] (1) Cleaning of silver wire: Take a silver wire, cut the silver wire short, and cut it into a silver wire with a length of 5cm. First use acetone for ultrasonic cleaning, then ethanol for ultrasonic cleaning, and finally ultra-pure Ultrasonic cleaning with water;

[0036] (2) Electrochemical roughening of silver wire: the electrochemical roughening method is used to form silver nanostructures on the surface of the cleaned silver wire. The steps are as follows: silver wire with a purity of 99.9% and a diameter of 0.40 mm is used as the working electrode , Ag / AgCl electrode as the reference electrode, 99.9% pure silver piece as the counter electrode, constitute a three-electrode system, 0.1M hydrochloric acid solution as electrolyte, scan rough by cyclic voltammetry at 2.5mV / s Make 20 turns of the silver wire, take out the r...

Embodiment 2

[0042] A method for detecting pentachlorophenol, the method comprising the following steps:

[0043] S1. Preparation of solid phase microextraction silk

[0044] (1) Cleaning of silver wire: Take a silver wire and cut the silver wire into a length of 10cm. First use acetone for ultrasonic cleaning, then ethanol for ultrasonic cleaning, and finally ultra-pure Ultrasonic cleaning with water;

[0045] (2) Electrochemical roughening of silver wire: The electrochemical roughening method is used to form silver nanostructures on the surface of the cleaned silver wire. The steps are as follows: silver wire with a purity of 99.9% and a diameter of 0.40 mm is used as the working electrode , Ag / AgCl electrode is used as the reference electrode, 99.9% pure silver piece is used as the counter electrode to form a three-electrode system, 0.1M hydrochloric acid solution is used as the electrolyte, and cyclic voltammetry is used to scan rough at 2.5mV / s scanning speed Make 20 turns of the silver wi...

Embodiment 3

[0051] A method for detecting pentachlorophenol, the method comprising the following steps:

[0052] S1. Preparation of solid phase microextraction silk

[0053] (1) Cleaning of silver wire: Take a silver wire, cut the silver wire short, and cut it into a silver wire with a length of 15cm. First use acetone for ultrasonic cleaning, then ethanol for ultrasonic cleaning, and finally ultra-pure Ultrasonic cleaning with water;

[0054] (2) Electrochemical roughening of silver wire: The electrochemical roughening method is used to form silver nanostructures on the surface of the cleaned silver wire. The steps are as follows: silver wire with a purity of 99.9% and a diameter of 0.40 mm is used as the working electrode , Ag / AgCl electrode is used as the reference electrode, 99.9% pure silver piece is used as the counter electrode to form a three-electrode system, 0.1M hydrochloric acid solution is used as the electrolyte, and cyclic voltammetry is used to scan rough at 2.5mV / s scanning spe...

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Abstract

The present invention belongs to the technical field of pentachlorophenol detection, and particularly relates to a pentachlorophenol detection method, which comprises: S1, solid phase micro extraction wire preparation: (1) silver wire washing, (2) electrochemical roughening of the silver wire, and (3) silver wire modification; and S2, pentachlorophenol detection: (1) extraction, and (2) surface enhanced Raman detection. According to the present invention, the SPME-SERS combined technology is used, such that the complex sample pre-treatment process can be reduced or even be eliminated, and the analysis time can be shortened; and the detection sensitivity is high, the detection limit is 6.4*10<-8>M, and the method is the online detection method.

Description

Technical field [0001] The invention belongs to the technical field of pentachlorophenol detection, and particularly relates to a detection method of pentachlorophenol. Background technique [0002] Pentachlorophenol and its salts (PCP) are mainly used in the wood preservation industry and are also a common insecticide. When an emergency occurs, its toxicity will become the main consideration for disaster relief. It is listed as one of the environmentally toxic pollutants for priority control by the US Environmental Protection Agency (EPA). There may be pentachlorophenol in the air, water, soil bottom mud, vegetable meat, and even the human body. Studies have shown that long-term exposure to pentachlorophenol can cause its accumulation in the environment and organisms. In addition, pentachlorophenol is also carcinogenic and can interfere with the human endocrine system. Based on the damage of pentachlorophenol to the environment and the human body, it is urgent to establish a...

Claims

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Application Information

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IPC IPC(8): G01N21/65G01N1/28
Inventor 边玮玮
Owner WEIFANG MEDICAL UNIVERSITY
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