Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An in situ visual analysis method for organic brominated compounds in soil

An analytical method and compound technology, applied in the field of organic pollutant analytical chemistry, can solve the problems of soil composition and structure disturbance and damage, and it is difficult to reflect the real distribution of pollutants in soil.

Inactive Publication Date: 2017-02-22
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods inevitably cause disturbance and damage to soil composition and structure, and it is difficult to reflect the true distribution of pollutants in soil.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An in situ visual analysis method for organic brominated compounds in soil
  • An in situ visual analysis method for organic brominated compounds in soil
  • An in situ visual analysis method for organic brominated compounds in soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Soil sample preparation:

[0034] Decabromodiphenyl ether (BDE-209) contaminates brown soil with a pollution concentration of 50mg Br / kg; after the soil is evenly mixed, add sterile water to the field water holding capacity, and prepare for slicing after overnight.

[0035] Select suitable size and stable microaggregates, use Microm HM525 cryostat, directly slice the microaggregates with a thickness of 2-15μm, and transfer them to Low-glass slides for spectroscopic analysis.

[0036] 2) FTIR microscopic imaging analysis:

[0037] like figure 1 As shown, using the Taiwan Light Source (NSRRC) 14A1 beamline to directly analyze BDE-209 polluted brown soil microsection samples, the analysis step size is 5-30μm, and the resolution is 1-4cm -1 , scanned 32-128 times; the imaging data was analyzed by Omnic 8.0 to obtain the organic carbon aromatic group (1613cm -1 ), carboxyl (1730cm -1 ), fat base (2922cm -1 ) functional groups and clay minerals (the main clay mineral ...

Embodiment 2

[0042] 1) Soil sample preparation:

[0043] Tetrabromobisphenol A (TBBPA) polluted brown soil: the pollution concentration is 50mg Br / kg; after the soil is evenly mixed, add sterile water to the field water capacity, and after overnight, prepare for slicing. The soil microsection preparation method is the same as Example 1.

[0044] 2) FTIR microscopic imaging analysis:

[0045] The main analytical instruments and parameters are the same as in Example 1. The imaging data was analyzed by Omnic 8.0 to obtain the organic carbon aromatic group (1613cm -1 ), carboxyl (1730cm -1 ), fat base (2922cm -1 ) functional groups and clay minerals (the main clay mineral in brown soil is illite, and its O-H position is 3621cm -1 ) on micro-section distribution map ( Figure 4 A, B, C, D shown).

[0046] 3) μ-XRF microscopic imaging analysis:

[0047] Using the Shanghai Light Source (SSRF) 15U1 beamline to analyze the micro-area distribution of TBBPA (Br as a tracer element) and other...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an in-situ visualized analysis method of an organic bromine compound in soil. The in-situ visualized analysis method comprises the steps of (1) contaminating soil by an organic bromine compound, selecting water saturated microaggregate of the soil, slicing a frozen microaggregate particle to obtain a micro slicing sample and transferring the sample onto a glass slide, (2) analyzing the composition and microcell distribution of carbonic functional groups and clay minerals in the micro slicing sample of the soil to be detected by a synchrotron radiation Fourier transformation infrared micro-imaging technology, (3) analyzing the same area, detected by the synchrotron radiation Fourier transformation infrared micro-imaging technology, of the micro slicing sample by a hard X-ray micro-focusing fluorescent micro-imaging technology, and analyzing the distribution of a tracer element Br and other mineral elements in the area to be detected and the occurrence modes of other mineral elements and Br, and (4) respectively obtaining microcell distribution spectrograms of the carbonic functional groups, the clay minerals, Br and the other mineral elements in the analysis area, and analyzing the spectrograms to obtain the microcell distribution character, related influence factors and other information of the organic bromine pollutant in the soil.

Description

technical field [0001] The invention belongs to the field of analytical chemistry of organic pollutants, and in particular relates to an in-situ visual analysis method for organic brominated compounds in soil. Background technique [0002] The interfacial migration and transformation behavior of organic pollutants in soil is closely related to their binding sites and storage forms on soil media. Research in this area has always been a hot spot in the field of environmental chemistry. Previous related research mainly relied on chemical extraction, mass spectrometry and other means. These methods inevitably cause disturbance and damage to soil composition and structure, and it is difficult to reflect the true distribution of pollutants in soil. Spectroscopy techniques based on synchrotron radiation sources have the characteristics of good spatial resolution and high sensitivity. With the development and application of synchrotron radiation spectroscopy technology, it is pos...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/84
Inventor 罗磊吕继涛温蓓张淑贞
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com