CN112577941A - Method for detecting organic pollutants in soil - Google Patents
Method for detecting organic pollutants in soil Download PDFInfo
- Publication number
- CN112577941A CN112577941A CN202011267351.0A CN202011267351A CN112577941A CN 112577941 A CN112577941 A CN 112577941A CN 202011267351 A CN202011267351 A CN 202011267351A CN 112577941 A CN112577941 A CN 112577941A
- Authority
- CN
- China
- Prior art keywords
- soil
- sample
- raman
- raman spectrum
- detection method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002689 soil Substances 0.000 title claims abstract description 73
- 239000002957 persistent organic pollutant Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 44
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 41
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000001069 Raman spectroscopy Methods 0.000 claims abstract description 37
- 238000001237 Raman spectrum Methods 0.000 claims abstract description 37
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 9
- 238000005360 mashing Methods 0.000 claims abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 29
- 230000005284 excitation Effects 0.000 claims description 12
- 238000004445 quantitative analysis Methods 0.000 claims description 9
- 229910001873 dinitrogen Inorganic materials 0.000 claims 4
- 239000000575 pesticide Substances 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 238000000149 argon plasma sintering Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 150000003071 polychlorinated biphenyls Chemical group 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 150000004657 carbamic acid derivatives Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 210000000750 endocrine system Anatomy 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003993 organochlorine pesticide Substances 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- QIIPQYDSKRYMFG-UHFFFAOYSA-N phenyl hydrogen carbonate Chemical class OC(=O)OC1=CC=CC=C1 QIIPQYDSKRYMFG-UHFFFAOYSA-N 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000004614 tumor growth Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a method for detecting organic pollutants in soil, which comprises the following steps: collecting soil to be detected, mashing, and drying and dehydrating at low temperature; weighing 1g of soil as a sample, grinding the soil into powder, and placing the powder in a sample bin for sealing; vacuumizing the sample bin to ensure that the internal air pressure of the sample bin is 1 kPa; heating the sample bin at 85 deg.C for 5 min; detecting gas components in the sample bin by using a Raman integrating sphere to obtain a Raman spectrum peak of isopropanol and a Raman spectrum peak of nitrogen, and quantitatively analyzing the content of the isopropanol by using a gas chromatograph; heating the sample bin again, wherein the temperature is 115 ℃, and keeping the constant temperature for 5 min; detecting gas components in the sample bin by using a Raman integrating sphere to obtain Raman spectrum peaks of toluene and isopropanol and a Raman spectrum peak of nitrogen, and quantitatively analyzing the content of toluene by using a gas chromatograph; and measuring the content of the organic pollutants in the soil to be measured.
Description
Technical Field
The invention relates to the technical field of soil detection, in particular to a method for detecting organic pollutants in soil.
Background
The organic pollutants in the soil mainly comprise volatile organic pollutants and semi-volatile organic pollutants. The main categories of soil organic pollutants in China comprise: petroleum hydrocarbon pollutants, halogenated hydrocarbon pollutants, pesticide pollutants, polycyclic aromatic hydrocarbons, polychlorinated biphenyl, dioxin, phthalate and other organic pollutants.
The organic pollutants in soil are chemical pesticides in the first place. Currently, about 50 kinds of chemical pesticides are widely used, and mainly comprise organophosphorus pesticides, organochlorine pesticides, carbamates, phenoxy carboxylic acids, phenols and amines. In addition, petroleum, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, methane, harmful microorganisms and the like are also common organic pollutants in soil. Currently, the production of pesticides in China is second in the world, but the commodity structure is unreasonable, the quality is low, 70% of pesticides, 70% of organophosphorus pesticides and 70% of highly toxic species in organophosphorus pesticides cause a lot of pesticide residues, and a severe soil pollution problem is caused. Organic pollutants in soil can affect the biochemical and physiological reactions of human body, thereby affecting metabolism, development and reproductive functions, possibly affecting the intelligence development level of human body and destroying the nervous system and the endocrine system. Organic pollutants may also promote tumor growth after entering the human body, resulting in increased incidence of cancer. Therefore, the organic matters in the soil are extremely harmful, and the pollutants in the soil need to be qualitatively and quantitatively measured, so that the polluted soil is conveniently and comprehensively treated.
Because the composition of soil is complicated and mostly the solid of difficult volatility, consequently to the detection of soil organic pollutant be the volatile matter that detects organic matter usually, in order to improve detection efficiency, heat soil sample usually, make organic matter wherein fully volatilize, improve detection efficiency and degree of accuracy.
There are many methods for detecting the volatile gas components and concentration of soil organic compounds, but all have many limitations. For example, although detection of gas components can be realized by a gas chromatography method, the time is slow and changes in the concentration of gas components cannot be reflected in time. In addition, the gas chromatography method cannot detect all organic pollutants in the soil, the detected organic pollutants are inaccurate in quantification and are not subjected to nondestructive detection, and the detected samples are consumed. The infrared absorption method adopts the excitation light corresponding to the absorption wavelength of a single gas to pass through the sample area, and the gas components and concentration are deduced by utilizing the attenuation coefficient of the excitation light, although the sensitivity is high, only one gas can be detected by one excitation wavelength, and the limitation is large.
Therefore, the method for detecting the whole gas molecules in the prior art is generally low in efficiency and difficult to popularize.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a soil organic pollutant detection method which has wide detection range and high efficiency and can carry out nondestructive detection on a soil sample to be detected.
Therefore, the invention provides a method for detecting soil organic pollutants, which comprises the following steps:
s01, collecting a certain amount of soil to be detected, and mashing and drying the soil to be detected;
s02, weighing a certain amount of air-dried soil sample, grinding the soil sample into powder, and placing the powder in a sample bin for sealing;
s03, vacuumizing a sample bin;
s04, heating the sample bin to enable the soil sample in the sample bin to volatilize organic gas;
s05, collecting Raman spectra of nitrogen and organic gas in a sample bin by using a Raman integrating sphere, sending a detection signal to a Raman spectrometer, judging the type of the organic gas based on the Raman spectrum peak position of the organic gas, and carrying out quantitative analysis on the organic gas based on the ratio of the Raman spectrum peak intensity of the organic gas to the Raman spectrum peak intensity of the nitrogen;
and S06, obtaining a quantitative analysis result and giving the components and the content of the organic pollutants in the soil sample to be detected.
In the above technical solution, preferably, in S02, 1g of the sample to be tested is weighed.
In the above-described embodiment, preferably, in S03, the internal pressure of the sample chamber is 1 kPa.
In the foregoing technical solution, preferably, in S03, the sample chamber is communicated with a vacuum extraction device through an air path, and the vacuum extraction device extracts air in the sample chamber.
In the above technical solution, preferably, in S04, the heating temperature is 50 to 260 ℃.
In the above technical solution, preferably, in S04, the heating temperature is 85 ℃, and the temperature is kept constant for 5 min.
In the above technical solution, preferably, in S05, raman spectrum peaks of isopropyl alcohol and nitrogen are obtained, and the content of isopropyl alcohol is quantitatively analyzed based on a ratio of the raman spectrum peak intensity of isopropyl alcohol to the raman spectrum peak intensity of nitrogen.
In the above technical solution, preferably, in S04, the heating temperature is 115 ℃, and the temperature is kept constant for 5 min.
In the above technical solution, preferably, in S05, raman spectrum peaks of toluene, isopropanol, and nitrogen are obtained, and the content of toluene is quantitatively analyzed based on a ratio of the raman spectrum peak intensity of toluene to the raman spectrum peak intensity of nitrogen.
In the above-described aspect, preferably, in S05, the sample chamber includes a light-transmitting portion through which the excitation light and the raman signal of the raman integrating sphere pass to and from the sample chamber.
Compared with the prior art, the invention has the following advantages:
1. all organic contaminants in the soil can be detected, even including isomers and isotopes.
2. The Raman spectrum technology is called as molecular fingerprint spectrum, so that the organic pollutants can be accurately qualitatively and quantitatively analyzed, each organic pollutant has the characteristic spectrum, the detection result is visual, all the organic pollutants can be detected at one time, and the speed is high.
3. Does not contact with the sample and cannot damage or pollute the sample.
Detailed Description
It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structures and implementations can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description is merely illustrative of the technical solutions of the present invention, and should not be construed as being all of the present invention or limiting or restricting the technical solutions of the present invention.
The invention provides a method for detecting organic pollutants in soil, which comprises the following steps:
s01, collecting a certain amount of soil to be detected, and mashing and drying the soil to be detected;
s02, weighing a certain amount of air-dried soil sample, grinding the soil sample into powder, and placing the powder in a sample bin for sealing;
s03, vacuumizing a sample bin;
s04, heating the sample bin at 50-260 ℃, preferably 85-115 ℃ to volatilize organic gas from the soil sample in the sample bin;
s05, collecting Raman spectra of nitrogen and organic gas in a sample bin by using a Raman integrating sphere, sending a detection signal to a Raman spectrometer, judging the type of the organic gas based on the Raman spectrum peak position of the organic gas, and carrying out quantitative analysis on the organic gas based on the ratio of the Raman spectrum peak intensity of the organic gas to the Raman spectrum peak intensity of the nitrogen;
and S06, obtaining a quantitative analysis result, and giving the components and the pollution degree (organic pollutant content) of the organic pollutants in the soil sample to be detected.
The specific steps of the process of the present invention will be illustrated by specific examples.
Example 1 detection method of organic contaminants in soil I
Collecting a certain amount of soil to be detected, mashing the soil, and airing and dehydrating at low temperature. Then weighing 1g of sample to be detected from the dry soil to be detected, placing the sample to be detected in a closed sample bin, and then vacuumizing the sample bin to enable the internal air pressure to reach 1 kPa. The sample chamber was heated at 85 ℃ for 5 min. Volatilizing organic gas isopropanol in a soil sample, collecting Raman spectrum peaks of the organic gas isopropanol and residual gas (mainly nitrogen) in a sample bin by using a Raman integrating sphere, sending signals to a Raman spectrometer, carrying out quantitative analysis on the content of the isopropanol by using the Raman spectrometer based on the ratio of the Raman spectrum peak intensity of the isopropanol to the Raman spectrum peak intensity of the nitrogen, obtaining the components and the content of organic matters in the soil sample to be detected, and finally giving out the components and the pollution degree of pollutants in the soil.
Example 2 detection method of soil organic contaminants II
Collecting a certain amount of soil to be detected, mashing the soil, and airing and dehydrating at low temperature. Then weighing 1g of sample to be detected from the dry soil to be detected, placing the sample to be detected in a closed sample bin, and then vacuumizing the sample bin to enable the internal air pressure to reach 1 kPa. The sample chamber was heated at 115 ℃ for 5 min. Volatilizing organic gas isopropanol and toluene in a soil sample, collecting Raman spectrum peaks of the organic gas isopropanol, toluene and residual gas (mainly nitrogen) in a sample bin by using a Raman integrating sphere, sending signals to a Raman spectrometer, carrying out quantitative analysis on the content of the toluene by using the Raman spectrometer based on the ratio of the Raman spectrum peak intensity of the toluene to the Raman spectrum peak intensity of the nitrogen, obtaining the component and the content of organic matters in the soil sample to be detected, and finally giving out the component and the pollution degree of pollutants in the soil.
In the above embodiment, the soil to be measured includes dry soil such as powder and block, and the mud containing a large water content of the soil needs to be dehydrated and then analyzed. The sample bin is communicated with a vacuum extraction device through an air path, and air in the sample bin is extracted by the vacuum extraction device such as a vacuum pump. The sample bin is provided with a light-transmitting part, and the excitation light and the Raman signal of the Raman integrating sphere pass through the light-transmitting part to enter and exit the sample bin.
The raman integrating sphere may adopt a structure known in the art, which has a gas molecule raman signal excitation function and a gas molecule raman signal collection function. The Raman spectrometer can be connected with the Raman integrating sphere and records and stores the Raman signals collected by the Raman integrating sphere. The analysis system of the Raman spectrometer is provided with a Raman standard database, can identify the Raman spectrum of the gas stored by the Raman spectrometer, judge the component types of the gas, compare the intensity of the volatile gas in the soil with the intensity of the Raman spectrum peak of the nitrogen in the residual air, namely calculate the peak intensity ratio of different gases according to the mixed spectrum of the different gases, and carry out quantitative analysis according to the peak intensity ratio.
Specifically, the raman integrating sphere focuses excitation light to a sample point for multiple times through light path design, so that the use efficiency of the power of the excitation light is improved, and raman signals scattered to a three-dimensional space are collected and transmitted to one direction, so that the collection efficiency of the raman signals is improved, and the detection limit of detecting gas and solution by using a raman spectroscopy technology is improved. Has the advantages of qualitative, quantitative, nondestructive, rapid, non-contact, multi-component simultaneous detection and the like. The method is mainly applied to the fields of chemical reaction in-situ monitoring, environmental monitoring and the like. The application examples of the raman integrating sphere are: the transparent sample light scattering signal collecting device and the corresponding signal analyzing device with the publication number of CN208013077U have the advantages that exciting light enters a system, is reflected for many times by 2 right-angle reflecting mirror groups and is focused on a focus of a sample to be detected for many times by 2 confocal light beam converging devices, the energy of an exciting light source is fully utilized, and light scattering signals of the sample are obviously improved. Can be used with the existing Raman spectrometer, and greatly improves the sensitivity of detection signals. In a four-cube-corner mirror optical path increasing system disclosed in CN108563006A, parallel light enters the system and is reflected by an inner cube-corner mirror group for multiple times to increase the optical path in a 2-dimensional space. After the parallel light exits the inner rectangular mirror group and enters the outer rectangular mirror group, the 2-dimensional reflecting surface is subjected to three-dimensional deflection by the outer rectangular mirror group. The device can reflect light beams hundreds of times in a limited space, greatly increase the contact optical path between the light beams and the acted substance, improve the use efficiency of the device, reduce the space required by the device, and promote the development of miniaturization of optical devices and the improvement of the precision of detection devices. When the light scattering confocal excitation collecting system with the publication number of CN107831142A is applied to raman equipment and the like, a light scattering signal that an excitation light source emitted by an emission device of the excitation light source passes through a focus of the equipment and excites a sample at the focus of the equipment is collected by an oblique reflection optical device, a terminal reflection optical device and a source reflection optical device, transmitted to an analysis device and a conversion device, and processed and recorded by a data processing device. This section is a known art in the prior art, and is intended to understand the present invention and will not be described in detail.
The technical scope of the present application is not limited to the contents in the above description, and those skilled in the art can make various changes and modifications to the above embodiments without departing from the technical spirit of the present application, and these changes and modifications should fall within the protective scope of the present application.
Claims (10)
1. A soil organic pollutant detection method is characterized by comprising the following steps:
s01, collecting a certain amount of soil to be detected, and mashing and drying the soil to be detected;
s02, weighing a certain amount of air-dried soil sample, grinding the soil sample into powder, and placing the powder in a sample bin for sealing;
s03, vacuumizing a sample bin;
s04, heating the sample bin to enable the soil sample in the sample bin to volatilize organic gas;
s05, collecting Raman spectra of nitrogen and organic gas in a sample bin by using a Raman integrating sphere, sending a detection signal to a Raman spectrometer, judging the type of the organic gas based on the Raman spectrum peak position of the organic gas, and carrying out quantitative analysis on the organic gas based on the ratio of the Raman spectrum peak intensity of the organic gas to the Raman spectrum peak intensity of the nitrogen;
and S06, obtaining a quantitative analysis result and giving the components and the content of the organic pollutants in the soil sample to be detected.
2. The soil organic pollutant detection method according to claim 1, characterized in that: in S02, 1g of a sample to be tested is weighed.
3. The soil organic pollutant detection method according to claim 1, characterized in that: in S03, the internal pressure of the sample chamber was 1 kPa.
4. The soil organic pollutant detection method according to claim 3, characterized in that: at S03, the sample chamber is connected to a vacuum extractor via a gas path, and air in the sample chamber is extracted by the vacuum extractor.
5. The soil organic pollutant detection method according to claim 1, characterized in that: in S04, the heating temperature is 50-260 ℃.
6. The soil organic pollutant detection method of claim 5, wherein: in S04, the heating temperature was 85 ℃ and the temperature was kept constant for 5 min.
7. The soil organic pollutant detection method of claim 6, characterized in that: in S05, raman spectrum peaks of isopropyl alcohol and nitrogen gas are obtained, and the content of isopropyl alcohol is quantitatively analyzed based on the ratio of the raman spectrum peak intensity of isopropyl alcohol to the raman spectrum peak intensity of nitrogen gas.
8. The soil organic pollutant detection method of claim 5, wherein: in S04, the heating temperature was 115 ℃ and the temperature was kept constant for 5 min.
9. The soil organic pollutant detection method of claim 8, wherein: in S05, raman spectrum peaks of toluene, isopropyl alcohol, and nitrogen gas are obtained, and the content of toluene is quantitatively analyzed based on the ratio of the raman spectrum peak intensity of toluene to the raman spectrum peak intensity of nitrogen gas.
10. The soil organic pollutant detection method according to claim 1, characterized in that: in S05, the sample chamber has a light-transmitting section through which the excitation light and the raman signal of the raman integrating sphere pass to and from the sample chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011267351.0A CN112577941A (en) | 2020-11-13 | 2020-11-13 | Method for detecting organic pollutants in soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011267351.0A CN112577941A (en) | 2020-11-13 | 2020-11-13 | Method for detecting organic pollutants in soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112577941A true CN112577941A (en) | 2021-03-30 |
Family
ID=75122697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011267351.0A Pending CN112577941A (en) | 2020-11-13 | 2020-11-13 | Method for detecting organic pollutants in soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112577941A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023022825A1 (en) * | 2021-08-20 | 2023-02-23 | Tokyo Electron Limited | Raman sensor for supercritical fluids metrology |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6947132B1 (en) * | 2000-06-14 | 2005-09-20 | The United States Of America As Represented By The Secretary Of The Navy | Thermo-electrically cooled surface-enhanced raman spectroscopy sensor system to detect volatile organic compounds |
| CN205449593U (en) * | 2015-12-22 | 2016-08-10 | 北京高能时代环境技术股份有限公司 | Soil organic matter sampling device |
| CN106338557A (en) * | 2016-08-18 | 2017-01-18 | 浙江华才检测技术有限公司 | Method for determination of 55 volatile organic pollutants in soil |
| CN108563006A (en) * | 2018-02-01 | 2018-09-21 | 深圳海纳光科技有限公司 | A kind of four corner cube mirrors add lustre to journey system |
| CN109387401A (en) * | 2017-08-11 | 2019-02-26 | 上海环境节能工程股份有限公司 | A kind of analysis method that space enrironment tentatively samples |
| CN109827946A (en) * | 2019-02-28 | 2019-05-31 | 华北水利水电大学 | Soil constituent in-situ analysis system and method |
| CN110736727A (en) * | 2019-10-30 | 2020-01-31 | 中徽绿管家科技(北京)有限公司 | soil pollution detection method |
-
2020
- 2020-11-13 CN CN202011267351.0A patent/CN112577941A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6947132B1 (en) * | 2000-06-14 | 2005-09-20 | The United States Of America As Represented By The Secretary Of The Navy | Thermo-electrically cooled surface-enhanced raman spectroscopy sensor system to detect volatile organic compounds |
| CN205449593U (en) * | 2015-12-22 | 2016-08-10 | 北京高能时代环境技术股份有限公司 | Soil organic matter sampling device |
| CN106338557A (en) * | 2016-08-18 | 2017-01-18 | 浙江华才检测技术有限公司 | Method for determination of 55 volatile organic pollutants in soil |
| CN109387401A (en) * | 2017-08-11 | 2019-02-26 | 上海环境节能工程股份有限公司 | A kind of analysis method that space enrironment tentatively samples |
| CN108563006A (en) * | 2018-02-01 | 2018-09-21 | 深圳海纳光科技有限公司 | A kind of four corner cube mirrors add lustre to journey system |
| CN109827946A (en) * | 2019-02-28 | 2019-05-31 | 华北水利水电大学 | Soil constituent in-situ analysis system and method |
| CN110736727A (en) * | 2019-10-30 | 2020-01-31 | 中徽绿管家科技(北京)有限公司 | soil pollution detection method |
Non-Patent Citations (1)
| Title |
|---|
| 黄保坤等: "拉曼积分球设计及其在气体检测中的应用", 《光散射学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023022825A1 (en) * | 2021-08-20 | 2023-02-23 | Tokyo Electron Limited | Raman sensor for supercritical fluids metrology |
| US11664283B2 (en) | 2021-08-20 | 2023-05-30 | Tokyo Electron Limited | Raman sensor for supercritical fluids metrology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wittkamp et al. | Determination of BTEX compounds in water by solid-phase microextraction and Raman spectroscopy | |
| Vo-Dinh | Synchronous luminescence spectroscopy: methodology and applicability | |
| Hsu | Infrared spectroscopy | |
| Chudyk et al. | Remote detection of groundwater contaminants using far-ultraviolet laser-induced fluorescence | |
| KR900008954B1 (en) | Method of discrimination between containinated and uncontaminated container | |
| Vo-Dinh et al. | Monitoring and characterization of polyaromatic compounds in the environment | |
| US7295308B1 (en) | Air sampling method and sensor system for spectroscopic detection and identification of chemical and biological contaminants | |
| EP2976620B1 (en) | System for and method of combined libs and ir absorption spectroscopy investigations | |
| Malley et al. | Analysis of diesel fuel contamination in soils by near-infrared reflectance spectrometry and solid phase microextraction-gas chromatography | |
| Ali et al. | Raman spectroscopy and security applications: the detection of explosives and precursors on clothing | |
| Witkiewicz et al. | Analysis of the precursors, simulants and degradation products of chemical warfare agents | |
| CN107064084A (en) | Microminiature laser fluorescence spectrum instrument and spectral method of detection | |
| Ogrizek et al. | Critical review on the development of analytical techniques for the elemental analysis of airborne particulate matter | |
| Chemnitzer | Strategies for achieving the lowest possible detection limits in ICP-MS | |
| CN112577941A (en) | Method for detecting organic pollutants in soil | |
| CN113189082B (en) | Trace organic pollutant analytical spectrometer based on double-pulse-width laser and detection method | |
| Xia et al. | Study on fluorescence interaction between humic acid and PAHs based on two-dimensional correlation spectroscopy | |
| CN107703222B (en) | Method for determining trace organic amine in atmospheric particulates | |
| Jackie et al. | Rapid and Sensitive Direct Detection of Endotoxins by Pyrolysis–Gas Chromatography–Mass Spectrometry | |
| Stuart et al. | Spectroscopic measurement of used lubricating oil quality | |
| CN100491974C (en) | Combined chemical spectral detection system | |
| Kenney et al. | Applications of fourier-transform infrared spectroscopy in geomicrobiology | |
| El Haddad et al. | Functional group composition of organic aerosol from combustion emissions and secondary processes at two contrasted urban environments | |
| CN109781660A (en) | Oil pollution object detecting method in soil based on multi-photon electron extraction spectrum | |
| Tzing et al. | A simple and rapid method for identifying the source of spilled oil using an electronic nose: confirmation by gas chromatography with mass spectrometry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210330 |