CN106442022A - Method for solidifying and sampling carbon element in gas-phase carbon dioxide - Google Patents
Method for solidifying and sampling carbon element in gas-phase carbon dioxide Download PDFInfo
- Publication number
- CN106442022A CN106442022A CN201610780179.6A CN201610780179A CN106442022A CN 106442022 A CN106442022 A CN 106442022A CN 201610780179 A CN201610780179 A CN 201610780179A CN 106442022 A CN106442022 A CN 106442022A
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- Prior art keywords
- solution
- carbon dioxide
- caco
- sampling
- air
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 35
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 23
- 238000005070 sampling Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 31
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 239000013049 sediment Substances 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 claims description 2
- 239000011575 calcium Substances 0.000 abstract description 20
- 239000002244 precipitate Substances 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 7
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 5
- 239000000920 calcium hydroxide Substances 0.000 abstract description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 3
- 230000000155 isotopic effect Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
-
- 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
- G01N1/40—Concentrating samples
- G01N1/4044—Concentrating samples by chemical techniques; Digestion; Chemical decomposition
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a method for solidifying and sampling carbon element in gas-phase carbon dioxide, which comprises the following steps: step 1, preparation of CO-free2The pure water of (4); step 2, preparing unsaturated Ca (OH)2A solution; step 3, reacting the unsaturated Ca (OH)2The solution is placed in the air environment needing sampling in an open way, and the solution is kept in full contact with the air, so that CaCO3Separating out a precipitate; step 4, carrying CaCO3Ca (OH) of the precipitate2Filtering the solution to collect CaCO3And (4) precipitating. According to the characteristic that carbon dioxide reacts with calcium hydroxide to generate calcium carbonate solid precipitate, the rare carbon dioxide in the air is concentrated and fixed in the calcium carbonate for further analysis, detection and test.
Description
Technical field
The invention belongs to chemistry and geology, especially relate to carbon in a kind of gas phase carbon dioxide solidification and
Sampling method.
Background technology
The aerial concentration of carbon dioxide is about 0.0003～0.0004 atmospheric pressure, i.e. accounts for 0.03～0.04%, soil
Carbon dioxide content in earth air is more much higher than in air, can account for the 0.74～9.74% of volume.Carbon dioxide is in atmosphere
Ratio is very little, but its role and influence are very prominent, and it is greenhouse gases, is also the Source of life of plant.Carbon is often in all kinds of inspections
Survey and in research as a kind of tracer element, how to obtain representational sample, be an important problem, particularly to dilute
The sampling of thin and ratio Carbon Dioxide in Air little again, finds no relatively simple and effectively concentrates and solidify sampling side
Method.
Content of the invention
It is an object of the invention to generate the sedimentary feature of calcium carbonate solid according to carbon dioxide with calcium hydroxide reaction, will
Rare gas phase carbon dioxide in air, concentrates and is fixed in stable calcium carbonate, in order to be further analyzed,
Detection and test, can be applicable in the correlation test of karst area fundamental research and engineering Application Research, it is possible to be applied to
Other samplings relating to gas phase carbon dioxide and detection field.
The present invention is realized in：
Calcium hydroxide (Ca (OH)2) dissolved carbon dioxide (CO in solution2) there is chemical reaction afterwards, generate calcium carbonate
(CaCO3) sediment, chemical equation is as follows.
Ca(OH)2+CO2→CaCO3↓+H2O
CO in atmosphere2Concentration be about 0.0003～0.0004 atmospheric pressure, i.e. account for 0.03～0.04%, soil air
In CO2In content ratio air much higher, the 0.74～9.74% of volume can be accounted for.CO in air2Content is few, but source is steady
Fixed.
Pure water CO between 10～30 DEG C, in atmospheric environment2Meltage is 0.765～0.415mg/L.Put down according to carbonic acid
Weighing apparatus theory, CO in water2With Ca (OH)2Continual supplementing will be obtained from air after reaction.
The Ca in 100g pure water (OH) between 10～30 DEG C2Solubility is 0.176～0.153g, i.e. 1.76～1.53g/
L.CaCO in pure water in the atmospheric environment of 10～30 DEG C3Solubility is about 0.057g/L.Ca (OH) under same condition2Ratio
CaCO3Solvability in water is much bigger, it is ensured that unsaturated Ca (OH)2Solution produces the CaCO of q.s3Precipitation
Thing, will not mix Ca (OH) simultaneously in sediment2Solid, also will not be mixed into other impurity.
According to above-mentioned reaction principle, can configure and unsaturated eliminate CO2Ca (OH)2Solution, is placed in and needs concentration to take
In the air ambient of sample, retain the sufficiently long time, the CO in air2CaCO can be generated with solution generation chemical reaction3Precipitation
Thing, collects sediment, can realize to CO in air2Concentration solidification sampling, in error allowed band, sedimentary carbon unit
Element, is only derived from the CO in sampling environment air2.
Therefore in the gas phase carbon dioxide of the present invention, solidification and the sampling method of carbon comprise the following steps that：
Step 1, preparation are without CO2Pure water；
Step 2, configure undersaturated Ca (OH)2Solution；
Step 3, by described undersaturated Ca (OH)2Solution opens wide and is placed in the air ambient needing sampling, keeps solution
It is fully contacted with air, make CaCO3Sediment separates out；
Step 4, CaCO will be carried3Sedimentary Ca (OH)2Solution filters, and collects CaCO3Sediment.
Wherein, step 1 is prepared without CO2The method of pure water be to inject distilled water in flask, boil 10min, immediately
Stopper with the plug equipped with soda lime pipe, obtain after cooling.
Step 2 configures undersaturated Ca (OH)2The method of solution is to weigh analytically pure Ca (OH)2Put into step 1 to prepare
Without CO2Pure water in, closing shakes up, and is placed in the vial with plug standby.
The invention have the advantages that：The present invention generates calcium carbonate solid according to carbon dioxide with calcium hydroxide reaction
Sedimentary feature, by the rare carbon dioxide in air, concentrates and is fixed in calcium carbonate, further to be divided
Analysis, detection and test, can be applicable in the correlation test of karst area fundamental research and engineering Application Research, it is possible to application
Relate to gas phase carbon dioxide or the sampling producing gas phase carbon dioxide and detection field in other.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1：
In the power station seepage preventing curtain grouting gallery of carbonate rock area, common substantial amounts of white precipitate, its material becomes
Divide predominantly CaCO3, multiple saying is had to its source, the dissolving of limestone and recrystallization formation may be.It is likely to as antiseepage
Ca (OH) in cement calculus in curtain2After dissolving, take, by permeating current, the CO meeting in air out of2Rear recrystallization is formed.Need for this
CaCO to be followed the trail of3The source of C in precipitate, according to above-mentioned carbon dioxide fixation and sampling method, achieves seepage preventing curtain grouting
CO in gallery air2Sample, carry out C isotope test.Test procedure and method are as follows：
1. prepare in the lab without CO2Pure water, inject distilled water in flask, boil 10min, immediately with equipped with sodium
The plug of lime pipe stoppers, cooling.Amount to preparation 5 bottles of each 1L without CO2Pure water.
2. the undersaturated Ca (OH) of laboratory configuration2Solution, respectively weighs the analytically pure Ca of 1.2g (OH) respectively2Put into 1L
Above-mentioned without CO2Pure water in, closing shakes up, and is placed in the vial with plug standby.Amount to the Ca (OH) preparing 3 1L volumes2
Solution.
3. by above-mentioned 3 undersaturated Ca (OH)2Solution is transported in some hydropower station seepage preventing curtain grouting gallery, opens wide and is placed in
The more gallery section of precipitate, keeps solution to be fully contacted with air, to CaCO3Sediment collects solution after fully separating out, close
Envelope takes back laboratory.
4. by above-mentioned band CaCO3Sedimentary Ca (OH)2Solution filters in the lab, collects CaCO3Sediment,
Send the detection that laboratory is related to of C isotope detection and research.
Measure the C isotopics in precipitate, it was demonstrated that the C isotopics in precipitate and CO in gallery simultaneously2Middle C
Isotopics are consistent, thus confirm that in gallery, precipitate source is Ca (OH) in cement calculus2Dissolving.
Certainly, more than be the present invention concrete exemplary applications, the present invention also has other embodiment, all employings be equal to
The technical scheme that replacement or equivalent transformation are formed, all falls within protection domain of the presently claimed invention.
Claims (3)
1. the solidification of carbon and sampling method in a gas phase carbon dioxide, it is characterised in that comprise the steps：
Step 1, preparation are without CO2Pure water；
Step 2, configure undersaturated Ca (OH)2Solution；
Step 3, by described undersaturated Ca (OH)2Solution opens wide and is placed in the air ambient needing sampling, keeps solution and air
It is fully contacted, make CaCO3Sediment separates out；
Step 4, CaCO will be carried3Sedimentary Ca (OH)2Solution filters, and collects CaCO3Sediment.
2. the solidification of carbon and sampling method in gas phase carbon dioxide according to claim 1, it is characterised in that：Step
Described in 1, preparation is without CO2The method of pure water be to inject distilled water in flask, boil 10min, immediately with equipped with soda lime pipe
Plug stoppers, and obtains after cooling.
3. the solidification of carbon and sampling method in gas phase carbon dioxide according to claim 2, it is characterised in that：Step
Undersaturated Ca (OH) is configured described in 22The method of solution is to weigh analytically pure Ca (OH)2Put into step 1 prepare without CO2's
In pure water, closing shakes up, and is placed in the vial with plug standby.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610780179.6A CN106442022A (en) | 2016-08-31 | 2016-08-31 | Method for solidifying and sampling carbon element in gas-phase carbon dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610780179.6A CN106442022A (en) | 2016-08-31 | 2016-08-31 | Method for solidifying and sampling carbon element in gas-phase carbon dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106442022A true CN106442022A (en) | 2017-02-22 |
Family
ID=58090285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610780179.6A Pending CN106442022A (en) | 2016-08-31 | 2016-08-31 | Method for solidifying and sampling carbon element in gas-phase carbon dioxide |
Country Status (1)
| Country | Link |
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| CN (1) | CN106442022A (en) |
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|---|---|---|---|---|
| CN1466675A (en) * | 2000-09-25 | 2004-01-07 | ��V��ҩ��ʽ���� | Isotope gas analyzer and method for determining absorption capacity of carbon dioxide absorbent |
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| CN101379388A (en) * | 2006-02-03 | 2009-03-04 | 大塚制药株式会社 | Exhaled gas determination and analysis method and device |
| CN101419208A (en) * | 2008-11-29 | 2009-04-29 | 太原理工大学 | Method for resolving collinearity problem in origin parse for particles in air |
| CN101959574A (en) * | 2007-12-28 | 2011-01-26 | 缠绕机公司 | Method of removing and solidifying carbon dioxide from a fluid stream and fluid separation assembly |
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| CN103143256A (en) * | 2011-12-06 | 2013-06-12 | 财团法人工业技术研究院 | Recycle of CO2Deactivated absorbent and sequestered CO of capture system2Method (2) |
| CN103226128A (en) * | 2013-04-10 | 2013-07-31 | 太原理工大学 | Method for analyzing source of secondary organic carbon in ambient air fine particles |
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2016
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| CN101959574A (en) * | 2007-12-28 | 2011-01-26 | 缠绕机公司 | Method of removing and solidifying carbon dioxide from a fluid stream and fluid separation assembly |
| CN101419208A (en) * | 2008-11-29 | 2009-04-29 | 太原理工大学 | Method for resolving collinearity problem in origin parse for particles in air |
| CN103988073A (en) * | 2011-11-02 | 2014-08-13 | 贝科技术有限公司 | Measurement device and method for detecting the hydrocarbon content in gases |
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