An in situ visual analysis method for organic brominated compounds in soil
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
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
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
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
Property
Measurement
Unit
particle diameter
aaaaa
aaaaa
thickness
aaaaa
aaaaa
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
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
Login to view more