Detection method of polybromodiphenyl ether

A technology for polybrominated diphenyl ethers and a detection method is applied in the detection field of polybrominated diphenyl ethers, and can solve problems such as narrowing of distances and no SERS yet seen.

Inactive Publication Date: 2015-09-23
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

It is theoretically feasible to use SERS active substrates for the monitoring and analysis of PBDEs, but a major problem limiting its application is how to reduce the distance between non-polar PBDEs and metal nanoparticles, so that the SERS effect occurs
So far, there have been no reports about the application of SERS in the detection of BDE47 at home and abroad

Method used

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  • Detection method of polybromodiphenyl ether
  • Detection method of polybromodiphenyl ether
  • Detection method of polybromodiphenyl ether

Examples

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Embodiment 1

[0019] Preparation of embodiment 1Au nanoparticles: get 1mL2% HAuCl 4 The solution was added to 23 mL of deionized water, and the above solution was heated under mechanical stirring in an oil bath. When the temperature rose to 100°C, 1 mL of an aqueous solution containing 75 mg of sodium citrate was added to the above solution. After reacting for 20 minutes, the heating was stopped, and the product was continued to stir and cooled to room temperature to obtain Au nanoparticles.

Embodiment 2

[0020] Example 2 Enrichment and detection of PBDEs: After mixing 0.5mL Au nanoparticles and 0.5mL BDE47 solution in a 1.5mL centrifuge tube, centrifuge at 8000rpm for 20min. The remaining substances were mixed, and 5 μL of the sample was dropped on a silicon chip, and a portable Raman spectrometer was used for signal acquisition, with a scanning time of 5 s and a scanning wavelength of 785 nm, to obtain the SERS spectrum of polybrominated diphenyl ethers.

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Abstract

According to the invention, Au nano-particles are synthesized; polybromodiphenyl ether is enriched on the surface of the Au nano-particles by a sample pretreatment method of firstly mixing and then centrifuging; and Raman characteristic lines of polybromodiphenyl ether are observed through a portable Raman spectrometer. It proves through a series of experiments that a sample preparation method and a target pollutant analysis method are simple to operate and rapid detection of polybromodiphenyl ether in an ambient substrate can be realized.

Description

technical field [0001] The invention belongs to the field of environmental analysis, in particular to a detection method of polybrominated diphenyl ethers. technical background [0002] In 1928, the Indian physicist Raman discovered the Raman scattering effect, and the Raman spectroscopy (RS) technology established on this basis has a wide range of applications in the fields of molecular structure and analytical chemistry. In 1974, Fleischmann et al first observed the Surface Enhanced Raman Scattering (SERS) phenomenon of pyridine on a rough silver electrode. By 1997, the SERS effect realized single-molecule detection. Subsequently, due to the rapid development of nanotechnology , the research on SERS has also achieved certain results. As a technology with high detection sensitivity, high resolution, inert to water, quenchable fluorescence, and good stability, SERS has been widely used in the direction of adsorbate interface orientation and configuration, conformational res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
Inventor 景传勇孙振丽杜晶晶
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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