WO2007034663A1 - 試料中の循環炭素含有量の測定方法及び試料中の循環炭素物質の含有率測定法 - Google Patents
試料中の循環炭素含有量の測定方法及び試料中の循環炭素物質の含有率測定法 Download PDFInfo
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- WO2007034663A1 WO2007034663A1 PCT/JP2006/317082 JP2006317082W WO2007034663A1 WO 2007034663 A1 WO2007034663 A1 WO 2007034663A1 JP 2006317082 W JP2006317082 W JP 2006317082W WO 2007034663 A1 WO2007034663 A1 WO 2007034663A1
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 190
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 186
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000003575 carbonaceous material Substances 0.000 title claims description 10
- 125000004122 cyclic group Chemical group 0.000 title abstract description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 160
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 85
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 78
- 238000010306 acid treatment Methods 0.000 claims abstract description 44
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 98
- -1 carbonate ester Chemical class 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 19
- 238000005481 NMR spectroscopy Methods 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 150000004651 carbonic acid esters Chemical class 0.000 claims description 8
- 238000000691 measurement method Methods 0.000 claims description 5
- 125000005587 carbonate group Chemical group 0.000 claims description 2
- 238000001225 nuclear magnetic resonance method Methods 0.000 claims description 2
- 239000002253 acid Substances 0.000 abstract description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 57
- 239000002028 Biomass Substances 0.000 description 41
- 229910000019 calcium carbonate Inorganic materials 0.000 description 36
- 229920000515 polycarbonate Polymers 0.000 description 35
- 239000004417 polycarbonate Substances 0.000 description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 30
- 235000010216 calcium carbonate Nutrition 0.000 description 27
- 239000000126 substance Substances 0.000 description 17
- 238000011282 treatment Methods 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 229920000747 poly(lactic acid) Polymers 0.000 description 13
- 239000004626 polylactic acid Substances 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 9
- 238000004364 calculation method Methods 0.000 description 9
- 210000003278 egg shell Anatomy 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 238000006065 biodegradation reaction Methods 0.000 description 7
- 238000000921 elemental analysis Methods 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- IYKFYARMMIESOX-UHFFFAOYSA-N adamantanone Chemical compound C1C(C2)CC3CC1C(=O)C2C3 IYKFYARMMIESOX-UHFFFAOYSA-N 0.000 description 6
- 239000000654 additive Substances 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 102000002322 Egg Proteins Human genes 0.000 description 5
- 108010000912 Egg Proteins Proteins 0.000 description 5
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 150000002894 organic compounds Chemical class 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 241001465754 Metazoa Species 0.000 description 3
- 150000001720 carbohydrates Chemical class 0.000 description 3
- 235000011089 carbon dioxide Nutrition 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000002803 fossil fuel Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 229920001144 Hydroxy alpha sanshool Polymers 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- PSKIOIDCXFHNJA-UHFFFAOYSA-N Sanshool Natural products CC=CC=CC=CCCC=CC=CC(=O)NC(C)C PSKIOIDCXFHNJA-UHFFFAOYSA-N 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000004760 accelerator mass spectrometry Methods 0.000 description 1
- SBXYHCVXUCYYJT-UEOYEZOQSA-N alpha-Sanshool Chemical compound C\C=C\C=C\C=C/CC\C=C\C(=O)NCC(C)C SBXYHCVXUCYYJT-UEOYEZOQSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- ZJRWDIJRKKXMNW-UHFFFAOYSA-N carbonic acid;cobalt Chemical compound [Co].OC(O)=O ZJRWDIJRKKXMNW-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 229910000001 cobalt(II) carbonate Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
Definitions
- the present invention relates to a method for measuring the content of circulating carbon in a sample and a method for measuring the content of a circulating carbon material in a sample.
- biomass degree circulating carbon content
- the degree of nanomass refers to dividing the carbon contained in the sample into those in the food chain cycle in the biosphere (circulated carbon) and those derived from fossil fuels such as petroleum and lime (buried carbon).
- a material with a high ratio of circulating carbon that is, a material with a high biomass degree is evaluated as a material that suppresses the increase of carbon dioxide in the biosphere.
- a material with a high degree of biomass will only return to the atmospheric circulation when burned and diacid carbon, so it is thought that diacid carbon will not increase easily.
- animal and plant-derived substances typified by polylactic acid are materials that have a biomass degree of 100% and do not involve the emission of carbon dioxide generated from reserve carbon.
- polyolefins made from fossil fuels are evaluated as having a biomass degree of 0%.
- high molecular weight substances represented by polylactic acid such as polylactic acid
- polylactic acid generally give plasticity and rigidity when used as a highly brittle material.
- the added components are not limited to high biomass, but because the components of V, B, and B are used, the biomass levels of the composition materials actually used will differ. .
- Patent Document 1 and Patent Document 2 described above relate to a method for measuring the biodegradation rate of a non-natural organic compound, and a specific method for determining the content of a circulated carbon substance. It was a force known to you.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-185634
- Patent Document 2 JP 2004-198239 A
- the present invention has been made in view of the above-mentioned problems, and corrects the influence of the additive contained in the sample, and more accurately measures the content of circulating carbon in the sample.
- the purpose is to provide a method that can easily measure how much of the material used to circulate carbon (biomass component).
- the amount of 14 C measured by the acid treatment is considered to be the amount of 14 C derived from carbonate contained in the sample, and the portion of the sample excluding carbonate and the amount of circulating carbon in the Z or carbonate portion 2.
- the amount of 14 c measured by the acid treatment is the amount of 14 C derived from carbonate and carbonate contained in the sample. From the amount of 14 c measured by the acid treatment, the amount of 14 C derived from the carbonate 2.
- the amount of carbon dioxide gas derived from the carbonic acid ester in the carbon dioxide gas generated by the acid treatment is calculated, and the carbonic acid ester is calculated from the carbon dioxide gas generated by the acid treatment. 6.
- the circulation in the sample A method for measuring the content of circulating carbon material in a sample to calculate the content (% by mass) of the carbon material.
- the circulating carbon content can be individually determined for the materials constituting the sample, specifically, the rosin component and the carbonate.
- the mass ratio (wt%) of the biomass component in the sample can be measured by the method for measuring the content rate of the circulating carbon material in the sample.
- the mass fraction (wt%) of eggshells, etc. belonging to the biomass component of the carbonate can also be measured.
- FIG. 1 A flow chart of a method for measuring the content of circulating carbon in a sample excluding the carbonate of the present invention is shown.
- FIG. 2 is a schematic view showing an example of a solid sample diacid-containing carbonization apparatus.
- the method for measuring the circulating carbon content of the present invention comprises the following steps.
- FIG. 1 shows a flowchart of a method for measuring the content of circulating carbon in a sample of the present invention.
- a sample to be measured is first burned to convert all the carbon elements contained in the sample into carbon dioxide. This conversion can be performed, for example, using the solid sample carbon dioxide converter shown in FIG.
- the air for burning the sample 11 is blown to the combustor 12 that burns the sample.
- the combustor 12 includes a heating means 13, a quartz tube 14 in which the sample 11 is disposed, and a ceramic boat 15.
- carbon dioxide is removed in advance. Carbon dioxide can be removed, for example, by passing air through a trap 16 of a basic substance such as an aqueous sodium hydroxide solution.
- the combustion of the sample is preferably performed by heating the sample 11 to 900 to 1000 ° C. in the combustor 12 while sending air from which carbon dioxide has been removed. By burning at this temperature, almost all of the carbon in the sample can be converted to carbon dioxide.
- the combustion gas containing the carbon dioxide generated from the sample cartridge is sent to a basic substance trap 17 such as a sodium hydroxide aqueous solution, where the carbon dioxide is recovered.
- the total 14 C concentration of the sample is measured from the recovered carbon dioxide.
- the total 14 C concentration can be measured, for example, with an accelerator mass spectrometer.
- the total carbon content can be calculated by measuring the carbon dioxide concentration absorbed by the basic substance trap by elemental analysis and multiplying the mass of the basic substance trap by the carbon dioxide concentration.
- the sample is burned to measure the presence or absence of ash.
- the sample contains an inorganic component additive! / ⁇ , so the circulating carbon content is determined by the total 14 C concentration measured in step (A). It can be calculated. That is, the circulating carbon content of the sample can be calculated by the following formula (1).
- Sample circulating carbon content (%) (total 14 C concentration) ⁇ 110 ⁇ ⁇ ⁇ (1)
- the 14 c concentration measured here is mainly the 14 C concentration derived from carbonate and Z or carbonate contained in the sample. Therefore, by correcting the total 14 C concentration of the sample measured in step (A) with the 14 C concentration measured in this step, it is possible to calculate the cyclic carbon content excluding the influence of carbonate and the like in the sample. .
- sample processing method for example, after sealing a flask containing a certain amount of sample, the inside of the flask is replaced with nitrogen or the like to remove carbon dioxide and carbon in the system, and then the acid is removed. There is a method of recovering carbon dioxide generated by calories. Concentrated hydrochloric acid, phosphoric acid, etc. can be used as the acid used when the sample is acid-treated.
- the 14 C concentration of the sample is measured from the collected carbon dioxide.
- the C concentration can be measured with an accelerator mass spectrometer as in step (A). In this step, as in step (A), it is preferable to measure the total carbon content (TOC) of the sample.
- C quantity power Calculate the carbon content in the sample Examples of correction methods include the following methods (1) and (2).
- the sample for measuring the circulating carbon content is often composed of a biomass component and an additive (non-biomass component) added as an extender or reinforcing material.
- additives it can be presumed that carbonic acid gas is generated by acid treatment mainly from carbonates represented by calcium carbonate and carbonates represented by polycarbonate. Therefore, when the carbonate ester is not added or only a very small amount is added, or when it is judged that the degree of acid decomposition is small and the generation of carbonic acid-derived carbon dioxide is small, the above-mentioned By making assumptions, it is possible to calculate the carbon content of the sample excluding carbonate and the carbon content of Z or carbonate.
- the 14 C concentration (pMC: F%) excluding carbonate is also expressed by the following formula (3).
- the circulating carbon content of this portion can be calculated from the following formula (4).
- the presence or absence of carbonate ester can be measured by, for example, 13 C nuclear magnetic resonance method and infrared absorption measurement method. Specifically, in the spectrum obtained by 13 C nuclear magnetic resonance (solid 13 C NMR), 150 ⁇ ! Measure the presence or absence of absorption between ⁇ 180ppm. Further, in the spectrum obtained by infrared absorptiometry to measure the presence or absence of absorption between 1600 ⁇ 1800cm _1. As a result of these measurements, if absorption is confirmed in both measurements, it can be judged that carbonate ester is present.
- the amount of carbonate ester in the sample can be calculated from the NMR integrated value obtained by preparing a standard substance calibration curve and performing the above measurement.
- the amount of 14 C derived from carbonate is calculated from the amount of 14 C measured by acid treatment.
- 14 C amount measured by acid treatment pMC: D%)
- total carbon amount derived from carbonate (Sg) and From the total carbon content (Tg) derived from the carbonate ester the 14 C concentration (pMC: E,%) of the carbonate can be calculated from the following equation (5).
- the total 14 C concentration (pMC: B%) of the sample measured in the above-described step (A), the total carbon content (U g) of the sample, and the 14 C concentration of carbonate (pMC: E '%) and The 14 C concentration (pMC: F ′%) can be calculated from the following formula (6) by removing the carbonate from the total carbon amount (Sg) derived from the carbonate.
- the circulating carbon content of this portion can be calculated from the following formula (7).
- Circulating carbon content of the sample excluding carbonate (%) (F 'X 100) / 110
- polylactic acid as a polymer substance derived from animals and plants
- PC polycarbonate
- CaCO calcium carbonate
- the amount of carbon dioxide derived from carbonate can be calculated from the following equation (8).
- Carbonic acid ester carbon dioxide ⁇ X PC content (wt%) X calcium carbonate content (wt%) — (8)
- M is the formula amount of calcium carbonate (100), and Mc is the amount of elemental carbon (12).
- the corrected circulating carbon content in which the influence of carbon derived from carbonate is corrected that is, the sample
- the carbonate content can be removed and the circulating carbon content can be measured.
- biomass carbonate those mainly consisting of circulating carbon (biomass carbonate) include eggshells and shells, and those consisting mainly of non-circulating carbon (non-biomass carbonate) include stone limestone.
- non-biomass carbonate include stone limestone.
- the following formula (10) is established when the pMC of the 14 C amount of nano carbonate in the sample is G%.
- the amount of biomass carbonate (wt%) can be calculated by calculating the carbon amount of the neutral carbonate and dividing it by the carbon content (M c / M) of the carbonate.
- the amount of each biomass carbonate in the sample can be calculated if the carbonate composition and each pMC in the sample are known.
- the circulating carbon content in the sample obtained by the above-described method and the total carbon amount of the sample, or the total carbon amount of the sample and the total carbon amount generated by acid treatment are included in the sample. From the carbon content of each material, the content (mass%) of the circulating carbon material (biomass component) in the sample can be calculated.
- the circulating carbon mass (wt%) contained in the sample is calculated by multiplying the circulating carbon content (%) in the sample by the total carbon content (g) of the sample, and this is used as the sample. By dividing by the carbon content of each material contained, the mass% of the nitrogen component can be calculated.
- the carbon content (wt%) of each material can be measured by elemental analysis. For example, polylactic acid has a carbon content of 50 wt% and cellulose has 44.45 wt%.
- the content (mass%) of each component can be calculated if the carbon content (atomic%) and the mixing ratio of each material are known.
- Treatment 1 Total carbon content and ash content of the sample by combustion
- Samples were processed using the solid sample carbon dioxide generator shown in Figure 2 to measure carbon dioxide recovery and the presence or absence of ash.
- Sample 1000 Omg was placed on a ceramic board and burned at 900-1000 ° C for 6 hours in a quartz tube of a combustor.
- the quartz tube was supplied with air from which carbon dioxide was removed at a rate of 1-5 liters Z minutes.
- carbon dioxide was removed by passing air through a trap using 1 liter of 2N NaOH aqueous solution.
- the combustion gas was passed through a trap using 1 liter of 1N NaOH aqueous solution to absorb all the carbon dioxide generated from the sample.
- X (g) be the mass of NaOH aqueous solution that has absorbed carbon dioxide.
- the total carbon content in sample lOOOmg is XXAX 10 _3 (mg), and the mass ratio of carbon is 10 _ 4 XXXA (wt%).
- Treatment 2 Measurement of total 14 C content (pMC) in sample
- Treatment 3 Determination of presence or absence of carbonate in sample
- Sample 50 Omg and NaCl (diluent) mixing 50.
- Omg what was pulverized, measured by infrared absorption measurement (diffuse reflection mode), to confirm the presence or absence of the absorption between 1600 ⁇ 1800cm _1.
- Omg and 2-adamantanone (internal standard substance) lOOmg mixed and pulverized were measured by 13 C nuclear magnetic resonance (solid 13 C NMR), and the presence or absence of absorption between 150 ppm and 180 ppm was confirmed. did.
- Treatment 4 Measurement of total carbon content and 14 C content (pMC) of the sample by acid treatment
- Sample 10 OOOg was placed in a flask. At this time, the inside of the reaction apparatus was purged with nitrogen with a nitrogen purge and reduced pressure so that atmospheric carbon dioxide and carbon dioxide were not mixed, and nitrogen purge was performed even when concentrated hydrochloric acid was added dropwise. Concentrated hydrochloric acid (34-36wt%) 15g was added dropwise to the sample to generate carbon dioxide and carbon dioxide.
- This diacid carbon was passed through a trap using 1 liter of 1N NaOH aqueous solution to absorb the total amount of diacid carbon that also generated sample force.
- Y (g) be the mass of NaOH aqueous solution that has absorbed carbon dioxide.
- the total carbon content of the sample 10g is YXCX10 _3 (mg), the mass ratio of diacid I ⁇ arsenide, YXCX10 _6 (g) X ( M ZMc) ZlO (g) X100 (wt%), i.e., ( M / Mc) X
- the total carbon content in sample lOOOmg is XXAX 10 _3 (mg), and from treatment 2, the total 14 C concentration of the sample is%.
- the 14 C content of a sample having a circulating carbon content of 100% is 110 (%)
- the circulating carbon content H of the sample is expressed by the following equation.
- the mass ratio of polylactic acid contained in the sample is as follows.
- the biomass component contained in the sample is cellulose
- the carbon content is 44.45 wt% from the elemental analysis value
- the mass ratio of polylactic acid contained in the sample is as follows.
- the mass ratio of cellulose ( w t %) lZO.4445
- Treatment 4 it can be assumed that all the carbon dioxide generated by the acid treatment is derived from carbonate. Therefore, in the 10g sample, the total amount of carbon derived from carbonate is YXCX 10 _3 (mg), and the 14 C concentration derived from carbonate is 0%.
- the carbon mass ratio ⁇ (wt%) derived from circulating carbon (biomass component) can be calculated by the following equation.
- the blending amount of each material in the sample is calculated from the carbon content of the biomass component.
- PC polycarbonate
- ADO 2-adamantanone
- PCwt% PC integral value ⁇ ⁇ X (ADOwt%)
- Carbonate-derived diacid-carbon content in the diacid-carbon generated by acid treatment is composed of polylactic acid as animal and plant-derived polymer material, polycarbonate (PC) as carbonate, and calcium carbonate (CaCO) as carbonate.
- Carbonic acid ester-derived carbon dioxide (wt%) ⁇ XPC (wt%) X calcium carbonate content (wt%)
- M is the formula amount of calcium carbonate (100), and Mc is the amount of elemental carbon (12).
- the amount of carbon dioxide derived from carbonate can be calculated as follows.
- Carbon dioxide content derived from carbonate (wt%) (M / Mc) X 10 ° XPCX
- the amount of carbonic acid-derived diacid carbon is (M — M XPCX ⁇
- Mass ratio of carbon 10 _4 XXXA-10 _5 X (1- PCX j8 X (M / M) XYXC
- the carbon dioxide generated by the acid treatment is derived from carbonates and carbonates contained in the sample.
- carbonic acid ester is a fossil fuel-derived material
- the amount of 14 C is 0%.
- the amount of 14 C derived from carbonate is assumed to be E%.
- those mainly composed of circulating carbon include eggshells and shells.
- the amount of biomass carbonate (egg shell) (wt%) can be calculated by calculating the amount of carbon in the carbonate and dividing it by the carbon content of the carbonate (M c / M).
- Circulating carbon content H '(%) (F' X 100) / 110
- the carbon mass ratio ⁇ (wt%) derived from circulating carbon (biomass component) can be calculated by the following formula.
- I '(wt%) (XXAX 10—6— YXCX 10 _7 ) XH,
- PC (wt%) NMR integrated value x internal standard ⁇ : NAHA PC integrated value Z [FCwt% / internal standard wt%]
- 7557 is the carbon content (wt / wt) of PolyPoison.
- the degree of noise can be determined by subdividing the components in the sample into five. Therefore, since the measurement method takes into account the influence of the inorganic filler contained in the sample, the biomass degree of the sample can be accurately measured.
- Sample 1 is a chalk containing about 60% eggshell (mass ratio to the whole sample, the same shall apply hereinafter) and cellulose.
- Sample 2 is a tea bowl made of resin containing about 40% eggshell and about 10% corn pole (carbohydrate). is there. The results are shown in Table 3.
- the 14 C concentration (pMC) of eggshell is 104.66%, n 2n n of carbohydrate (CHO) and cellulose.
- the circulating carbon content of the entire sample can be determined more accurately even for samples containing substances having different circulating carbon contents.
- mass ratio (wt%) of the biomass component in the sample can be measured, it is easy to determine whether the measurement sample is a material with a low environmental impact. Therefore, it can be used to certify low environmental impact materials (biomass materials).
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/066,458 US20090233371A1 (en) | 2005-09-21 | 2006-08-30 | Method of determining cyclic carbon content in sample and method of determining content of cyclic carbon material in sample |
NZ566692A NZ566692A (en) | 2005-09-21 | 2006-08-30 | Method of determining cyclic carbon content in sample and method of determining content of cyclic carbon material in sample |
BRPI0616314-9A BRPI0616314A2 (pt) | 2005-09-21 | 2006-08-30 | mÉtodo para determinaÇço de teor de carbono cÍclico em amostra e mÉtodo para determinaÇço de teor de material de carbono cÍclico em amostra |
CA002620669A CA2620669A1 (en) | 2005-09-21 | 2006-08-30 | Method of determining cyclic carbon content in sample and method of determining content of cyclic carbon material in sample |
EP06797055A EP1927857A4 (en) | 2005-09-21 | 2006-08-30 | METHOD FOR DETERMINING THE CYCLIC CARBON CONTENT IN A SAMPLE AND METHOD FOR DETERMINING THE CONTENT OF CYCLIC CARBON MATERIAL IN A SAMPLE |
AU2006293290A AU2006293290A1 (en) | 2005-09-21 | 2006-08-30 | Method of determining cyclic carbon content in sample and method of determining content of cyclic carbon material in sample |
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JP2005-274690 | 2005-09-21 | ||
JP2005274690A JP2007085874A (ja) | 2005-09-21 | 2005-09-21 | 試料中の循環炭素含有量の測定方法及び試料中の循環炭素物質の含有率測定法 |
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CN110456024A (zh) * | 2019-08-23 | 2019-11-15 | 中国石油大学(华东) | 一种分析天然气水合物稳定区边界处碳循环过程的方法及系统 |
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JP2010155913A (ja) * | 2008-12-26 | 2010-07-15 | Ono Kensetsu:Kk | 木本類の不完全燃焼ガスの製造方法、不完全燃焼ガス、木酢、融雪剤、蟻酸金属塩混合物の製造方法、蟻酸金属塩混合物 |
KR101470363B1 (ko) * | 2012-12-26 | 2014-12-10 | 한국표준과학연구원 | 연소전처리-동위원소희석질량분석법 |
WO2015122475A1 (ja) | 2014-02-12 | 2015-08-20 | 積水メディカル株式会社 | 炭素同位体分析装置および炭素同位体分析方法 |
CN104777181B (zh) * | 2014-12-31 | 2017-05-10 | 中国石油天然气股份有限公司 | 致密油核磁共振t2截止值及流体饱和度确定方法、装置 |
KR20170122812A (ko) | 2015-03-04 | 2017-11-06 | 고쿠리츠 다이가쿠 호우징 나고야 다이가쿠 | 탄소 동위체 분석 장치 및 탄소 동위체 분석 방법 |
CN105651724A (zh) * | 2015-12-30 | 2016-06-08 | 东旭科技集团有限公司 | 一种利用红外碳硫分析仪测定玻璃中硫含量的方法 |
CN108226274A (zh) * | 2018-01-26 | 2018-06-29 | 中国科学院地球环境研究所 | 14c-ams快速在线分析仪 |
CN110646457B (zh) * | 2019-10-15 | 2022-04-22 | 中国科学院广州地球化学研究所 | 一种区分碳质气溶胶组分的碳质来源的核磁共振方法 |
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JP2003185634A (ja) | 2001-12-20 | 2003-07-03 | Idemitsu Petrochem Co Ltd | 非天然系有機化合物の生分解率の測定方法 |
JP2004198239A (ja) | 2002-12-18 | 2004-07-15 | Idemitsu Petrochem Co Ltd | 非天然系有機化合物の生分解率の測定方法 |
JP2005017018A (ja) * | 2003-06-24 | 2005-01-20 | Mitsubishi Heavy Ind Ltd | 廃棄物組成の計測方法及び装置 |
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JP2003185634A (ja) | 2001-12-20 | 2003-07-03 | Idemitsu Petrochem Co Ltd | 非天然系有機化合物の生分解率の測定方法 |
JP2004198239A (ja) | 2002-12-18 | 2004-07-15 | Idemitsu Petrochem Co Ltd | 非天然系有機化合物の生分解率の測定方法 |
JP2005017018A (ja) * | 2003-06-24 | 2005-01-20 | Mitsubishi Heavy Ind Ltd | 廃棄物組成の計測方法及び装置 |
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Cited By (2)
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CN110456024A (zh) * | 2019-08-23 | 2019-11-15 | 中国石油大学(华东) | 一种分析天然气水合物稳定区边界处碳循环过程的方法及系统 |
CN110456024B (zh) * | 2019-08-23 | 2022-02-15 | 中国石油大学(华东) | 一种分析天然气水合物稳定区边界处碳循环过程的方法及系统 |
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CA2620669A1 (en) | 2007-03-29 |
EP1927857A1 (en) | 2008-06-04 |
US20090233371A1 (en) | 2009-09-17 |
AU2006293290A1 (en) | 2007-03-29 |
KR20080049059A (ko) | 2008-06-03 |
NZ566692A (en) | 2010-03-26 |
EP1927857A4 (en) | 2009-02-11 |
BRPI0616314A2 (pt) | 2011-06-14 |
JP2007085874A (ja) | 2007-04-05 |
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