CN103472146A - Method for measuring content of chloridion and fluorinion in solid biomass fuel - Google Patents
Method for measuring content of chloridion and fluorinion in solid biomass fuel Download PDFInfo
- Publication number
- CN103472146A CN103472146A CN2013103627759A CN201310362775A CN103472146A CN 103472146 A CN103472146 A CN 103472146A CN 2013103627759 A CN2013103627759 A CN 2013103627759A CN 201310362775 A CN201310362775 A CN 201310362775A CN 103472146 A CN103472146 A CN 103472146A
- Authority
- CN
- China
- Prior art keywords
- sample
- biomass fuel
- chlorion
- solid biomass
- ion
- 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
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a method for measuring content of chloridion and fluorinion in solid biomass fuel. The method adopts a hydrothermal extraction-ion chromatography, and is characterized in that the sample collecting and preparation of solid biomass fuel, hydrothermal extraction and the ion chromatographic analysis method are adopted; the sample collecting and preparation of solid biomass fuel is realized in a manner that raw material is smashed into the size smaller than 1 mm, is blended, evened and then shrunk and obtained through the nine-point method, and is finally put into a sampling bottle for standby; the hydrothermal extraction is realized in a manner that about 0.60-1.40 g of a sample is added in a hydrothermal reaction kettle, 50 mL of deionized water is added, and heating is performed for 40-80 min at the temperature of 110-130 DEG C; separation and filtration after cooling are performed, and the content of chloridion and fluorinion in the obtained water solution is measured through the ion chromatography. The method can be used for effectively detecting the content of chloridion and fluorinion in solid biomass fuel, and has the advantages of high accuracy, simple steps and high convenience for operation.
Description
Technical field
The present invention relates to the assay method of chlorion and content of fluoride ion in a kind of solid biomass fuel.
Background technology
Biomass energy, as a kind of regenerative resource, has storage capacity and enriches and use the advantages such as nuisanceless, has been generally considered one of fundamental solution that solves the future source of energy crisis.Biomass fuel is sulfur-bearing not, do not produce sulphuric dioxide during burning, do not corrode boiler, can not cause acid rain to produce yet, raw material is mainly derived from stem shape crops, peanut shell, bark, sawdust and forest industry discarded object and agricultural wastes solid waste etc., and its dry basis moisture content is less than 10%～15%, and ash content is less than 1.5%, sulfur content and chlorinity all are less than 0.07%, and nitrogen content is less than 0.5%.
In biomass fuel, the content range of chlorine is larger, 0～2%.The meaning of its chlorine measurement is that chlorine and potassium, sodium etc. can cause gasification, generating set heavy corrosion as main harmful element, and in gasification, chlorine causes catalyst poisoning, and the chlorination oxygen evolution causes environmental problem to forming acid rain in atmosphere.Therefore, need set up the assay method of chlorine in biomass fuel accurately and reliably, chlorinity data accurately are provided, instruct and control combustion technique and process.
Current Countries is in the world being actively developed the formulation work of Test Research and the relevant criterion of solid biomass fuel characteristic.ISO (International Standards Organization) and China all also do not set up the method for inspection and relevant criterion ripe, prevailing for the time being in force.European Union has issued DDCEN/TS15289-2006 " full sulphur and Determination Method of Chlorine in solid biomass fuel " technical manual-research draft, attempts to form formal standard or technical manual after EU member country is on probation.
The method of measuring chlorine in solid fuel both at home and abroad has the potentiometric titration of the chromatography of ions, potassium rhodanide titrimetry and the CNS of European Union.Its measuring principle of high-temperature combustion hydrolytic-potentiometric titration is by sample burning and hydrolysis in oxygen and water vapor mixture stream, chlorine all is converted into chloride quantitatively soluble in water, take Ag as indicator electrode, Ag-AgCl is contrast electrode, with the chlorion in standard silver nitrate potential method direct titration condensed fluid, according to the silver nitrate consumption, calculate chlorinity in sample.
China is owing to can complying with without the solid biomass fuel inspection methods and criteria, and with reference to the method for inspection of coal, wherein the check of chlorine is undertaken by GB/T3558-1996 " assay method of chlorine (method A) in coal " at present.Although but solid biomass fuel and coal are all solid fuels, but obvious difference is arranged on structure and composition, therefore, directly adopt the assay method of chlorine in coal of the prior art to be measured biomass fuel, the accuracy of often measuring is lower, repeatability is poor, causes and measures the stability deficiency.
Summary of the invention
Technical matters to be solved by this invention, be to provide the assay method of chlorion and content of fluoride ion in a kind of solid biomass fuel, has the high and reproducible characteristics of accuracy.
Solve the problems of the technologies described above, the technical solution used in the present invention is as follows:
The assay method of chlorion and content of fluoride ion in a kind of solid biomass fuel comprises the following steps:
(1) get and be crushed to the tested solid biomass fuel sample that is less than 1mm, be uniformly mixed, and get with 9 method contractings the sampling jar of packing into after shakeouing, using as sample;
(2) be successively to add sample and the 50mL deionized water of 0.60g～1.40g in 100mL, the liner hydrothermal reaction kettle that is teflon toward volume, and tightly cover airtight;
(3) hydrothermal reaction kettle of sample will be housed by starting heating under room temperature, firing rate is 5 ℃/min, after the temperature be heated between 110 ℃～130 ℃, keep constant temperature 40min～80min, this constant temperature time is corresponding to the thermostat temperature setting, with the chlorion by sample and the fluorine ion sample solution that becomes soluble in water with this understanding;
(4) after the hydrothermal reaction kettle that completes the constant temperature step is cooled to room temperature again, therefrom take out sample solution, and with the miillpore filter of 0.45 μ m, sample solution is carried out to separating and filtering, using and obtain the clear liquid as testing sample;
(5) by the condition of work of ion chromatograph, arrange as follows: chromatographic column is the i.e. 4 * 250mm anion-exchange column of AS23; Sample size is 10～15 μ L; Column temperature is 25～30 ℃; Autosynthesis rejector electric current is 45mA; Leacheate is 4.5mM Na
2cO
3/ 8mM NaHCO
3solution; Flow velocity is 0.5～1.5mL/min;
(6) chlorion and the fluorine ion standard solution of preparation variable concentrations, with this standard solution of ion-chromatographic determination, obtain typical curve and the typical curve regression equation of chlorion and fluorine ion according to peak area and ion concentration under the described condition of work of step (5);
(7) use the ion-chromatographic determination testing sample under the described condition of work of step (5), obtain corresponding peak area, correspond to again typical curve or by the typical curve regression equation, obtain testing sample and be the concentration of chlorion and fluorine ion in tested solid biomass fuel.
As the first preferred version of the present invention, in step (2), described sample is 0.8g, and in step (3), described thermostat temperature is 110 ℃, and constant temperature time is 80min.
As the second preferred version of the present invention, in step (2), described sample is 1.4g, and in step (3), described thermostat temperature is 110 ℃, and constant temperature time is 80min.
As the 3rd preferred version of the present invention, in step (2), described sample is 0.6g, and in step (3), described thermostat temperature is 130 ℃, and constant temperature time is 40min.
As the 4th preferred version of the present invention, in step (2), described sample is 1.2g, and in step (3), described thermostat temperature is 130 ℃, and constant temperature time is 40min.
As the 5th preferred version of the present invention, in step (2), described sample is 0.6g, and in step (3), described thermostat temperature is 110 ℃, and constant temperature time is 80min.
As the 6th preferred version of the present invention, in step (2), described sample is 1.4g, and in step (3), described thermostat temperature is 130 ℃, and constant temperature time is 40min.
As the preferred arrangement of intermediate ion chromatograph condition of work of the present invention, in step (5), described sample size is 10 μ L, and column temperature is 25 ℃, and flow velocity is 1.0mL/min.
Be below experimental data:
Preparation chlorion and fluorine ion standard solution, then under the described condition of work of step (5) with this standard solution of ion-chromatographic determination, obtain respectively the typical curve regression equation of chlorion as shown in table 1 below and fluorine ion according to area and concentration.From table 1, the correlativity of equation is good.
Table 1 chlorion and fluorine ion typical curve test findings
Preferred arrangement by the invention described above the 4th preferred version and ion chromatograph condition of work, it is the condition in embodiment 4, the solid bio-fuel sample of getting respectively same batch carries out replicate determination, result is as shown in table 2, as shown in Table 2, (RSD) is little for the relative standard deviation of this replicate determination, shows the reproducible of assay method of the present invention.
The replicate determination result of chlorion and content of fluoride ion in table 2 solid biomass fuel
| Sample number into spectrum | Chlorine ion concentration (mg/L) | Fluorinion concentration (mg/L) |
| 1 | 21.2937 | 0.2279 |
| 2 | 21.1862 | 0.2479 |
| 3 | 20.6640 | 0.2568 |
| 4 | 20.9926 | 0.2374 |
| 5 | 21.1453 | 0.2731 |
| 6 | 21.2892 | - |
| Mean value | 21.0952 | 0.2486 |
| Relative standard deviation (RSD), % | 1.13 | 5.02 |
By the preferred arrangement of the invention described above the 4th preferred version and ion chromatograph condition of work, the condition in embodiment 4, get the solid bio-fuel sample and carry out recovery of standard addition mensuration.Add the 50mL deionized water in sample after, add respectively again 2.000mg/mL, 3.000mg/mL, the chlorion standard solution of 4.000mg/mL is tested, the actual content of middle chlorion and the mark liquid measure that adds are calculated respectively the recovery of chlorion per sample, and test findings is as shown in table 3.From table 3, the accuracy of assay method of the present invention is high.
The recovery of standard addition measurement result of chloride ion content in table 3 solid biomass fuel
To any one in the 6th preferred version and the preferred arrangement of ion chromatograph condition of work, carry out above-mentioned experiment by the invention described above first, can obtain equally to table 1 to the similar data of table 3, obtain same conclusion.
In sum, the present invention has following beneficial effect: in solid biomass fuel of the present invention, the assay method of chlorion and content of fluoride ion can effectively detect chlorion and content of fluoride ion in solid biomass fuel, has reproduciblely, and accuracy is high, step is simple, easy to operate advantage.
Embodiment
The assay method of chlorion and content of fluoride ion in solid biomass fuel of the present invention comprises the following steps:
(1) get and be crushed to the tested solid biomass fuel sample that is less than 1mm, be uniformly mixed, and get with 9 method contractings the sampling jar of packing into after shakeouing, using as sample;
(2) be successively to add sample and the 50mL deionized water of 0.60g～1.40g in 100mL, the liner hydrothermal reaction kettle that is teflon toward volume, and tightly cover airtight;
(3) hydrothermal reaction kettle of sample will be housed by starting heating under room temperature, firing rate is 5 ℃/min, and after the temperature be heated between 110 ℃～130 ℃, keep constant temperature 40min～80min, this constant temperature time is corresponding to the thermostat temperature setting, with the chlorion by sample and the fluorine ion sample solution that becomes soluble in water with this understanding;
(4) after the hydrothermal reaction kettle that completes the constant temperature step is cooled to room temperature again, therefrom take out sample solution, and with the miillpore filter of 0.45 μ m, sample solution is carried out to separating and filtering, using and obtain the clear liquid as testing sample;
(5) by the condition of work of ion chromatograph, arrange as follows: chromatographic column is the i.e. 4 * 250mm anion-exchange column of AS23; Sample size is 10～15 μ L; Column temperature is 25～30 ℃; Autosynthesis rejector electric current is 45mA; Leacheate is 4.5mM Na
2cO
3/ 8mM NaHCO
3solution; Flow velocity is 0.5～1.5mL/min;
(6) chlorion and the fluorine ion standard solution of preparation variable concentrations, with this standard solution of ion-chromatographic determination, according to peak area and ion concentration, obtain the typical curve of chlorion and fluorine ion and the regression equation of typical curve under the described condition of work of step (5);
(7) use the ion-chromatographic determination testing sample under the described condition of work of step (5), obtain corresponding peak area, correspond to again typical curve or by the regression equation of typical curve, obtain testing sample and be the concentration of chlorion and fluorine ion in tested solid biomass fuel.
Below in conjunction with embodiment, the present invention is further described, this description is just in order better to illustrate the present invention rather than to be limited.The present invention is not limited to particular example as described herein and embodiment.Any those of skill in the art are easy to be further improved without departing from the spirit and scope of the present invention and perfect, all fall into protection scope of the present invention.
Embodiment 1
Accurately take the solid biomass fuel 0.8002g after pulverizing, add in the hydrothermal reaction kettle that volume is 100mL, add again the 50mL deionized water, after hydrothermal reaction kettle is airtight, speed with 5 ℃/minute from room temperature heats up, heat 80min under 110 ℃, the miillpore filter separating and filtering of cooling rear use 0.45 μ m, obtain solution to be measured.
With ion chromatograph, solution to be measured is analyzed.During analysis, chromatographic column: AS23(4 * 250mm) anion-exchange column; Sample size: 10 μ L; Column temperature: 25 ℃; Autosynthesis rejector electric current: 45mA; Leacheate: 4.5mM Na
2cO
3/ 8mM NaHCO
3solution; Flow velocity: 1.0mL/min, finally obtain peak area.
Utilize respectively typical curve regression equation y=0.100x-0.001 and y=0.099x-0.169,
Wherein, x is peak area, and y is respectively fluorinion concentration or chlorine ion concentration, and unit is mg/L,
Calculate fluorinion concentration or chlorine ion concentration, again according to the volume of fluorinion concentration and chlorine ion concentration and testing sample, calculate respectively the total amount of fluorine ion and chlorion, again divided by the solid biomass fuel quality 0.8002g taken, obtain respectively the massfraction of fluorine ion and chlorion in solid biomass fuel.
Embodiment 2
Accurately take the solid biomass fuel 1.3995g after pulverizing, add in the hydrothermal reaction kettle that volume is 100mL, add again the 50mL deionized water, after hydrothermal reaction kettle is airtight, speed with 5 ℃/minute from room temperature heats up, heat 80min under 110 ℃, the miillpore filter separating and filtering of cooling rear use 0.45 μ m, obtain solution to be measured.
With ion chromatograph, solution to be measured is analyzed.During analysis, chromatographic column: AS23(4 * 250mm) anion-exchange column; Sample size: 10 μ L; Column temperature: 25 ℃; Autosynthesis rejector electric current: 45mA; Leacheate: 4.5mM Na
2cO
3/ 8mM NaHCO
3solution; Flow velocity: 1.0mL/min, finally obtain peak area.
Utilize respectively typical curve regression equation y=0.100x-0.001 and y=0.099x-0.169,
Wherein, x is peak area, and y is respectively fluorinion concentration or chlorine ion concentration, and unit is mg/L,
Calculate fluorinion concentration or chlorine ion concentration, again according to the volume of fluorinion concentration and chlorine ion concentration and testing sample, calculate respectively the total amount of fluorine ion and chlorion, again divided by the solid biomass fuel quality 1.3995g taken, obtain respectively the massfraction of fluorine ion and chlorion in solid biomass fuel.
Embodiment 3
Accurately take the solid biomass fuel 0.5997g after pulverizing, add in the hydrothermal reaction kettle that volume is 100mL, add again the 50mL deionized water, after hydrothermal reaction kettle is airtight, speed with 5 ℃/minute from room temperature heats up, heat 40min under 130 ℃, the miillpore filter separating and filtering of cooling rear use 0.45 μ m, obtain solution to be measured.
With ion chromatograph, solution to be measured is analyzed.During analysis, chromatographic column: AS23(4 * 250mm) anion-exchange column; Sample size: 10 μ L; Column temperature: 25 ℃; Autosynthesis rejector electric current: 45mA; Leacheate: 4.5mM Na
2cO
3/ 8mM NaHCO
3solution; Flow velocity: 1.0mL/min, finally obtain peak area.
Utilize respectively typical curve regression equation y=0.100x-0.001 and y=0.099x-0.169,
Wherein, x is peak area, and y is respectively fluorinion concentration or chlorine ion concentration, and unit is mg/L,
Calculate fluorinion concentration or chlorine ion concentration, again according to the volume of fluorinion concentration and chlorine ion concentration and testing sample, calculate respectively the total amount of fluorine ion and chlorion, again divided by the solid biomass fuel quality 0.5997g taken, obtain respectively the massfraction of fluorine ion and chlorion in solid biomass fuel.
Embodiment 4
Accurately take the solid biomass fuel 1.1995g after pulverizing, add in the hydrothermal reaction kettle that volume is 100mL, add again the 50mL deionized water, after hydrothermal reaction kettle is airtight, speed with 5 ℃/minute from room temperature heats up, heat 40min under 130 ℃, the miillpore filter separating and filtering of cooling rear use 0.45 μ m, obtain solution to be measured.
With ion chromatograph, solution to be measured is analyzed.During analysis, chromatographic column: AS23(4 * 250mm) anion-exchange column; Sample size: 10 μ L; Column temperature: 25 ℃; Autosynthesis rejector electric current: 45mA; Leacheate: 4.5mM Na
2cO
3/ 8mM NaHCO
3solution; Flow velocity: 1.0mL/min, finally obtain peak area.
Utilize respectively typical curve regression equation y=0.100x-0.001 and y=0.099x-0.169,
Wherein, x is peak area, and y is respectively fluorinion concentration or chlorine ion concentration, and unit is mg/L,
Calculate fluorinion concentration or chlorine ion concentration, again according to the volume of fluorinion concentration and chlorine ion concentration and testing sample, calculate respectively the total amount of fluorine ion and chlorion, again divided by the solid biomass fuel quality 1.1995g taken, obtain respectively the massfraction of fluorine ion and chlorion in solid biomass fuel.
Claims (8)
1. the assay method of chlorion and content of fluoride ion in a solid biomass fuel comprises the following steps:
(1) get and be crushed to the tested solid biomass fuel sample that is less than 1mm, be uniformly mixed, and get with 9 method contractings the sampling jar of packing into after shakeouing, using as sample;
(2) be successively to add sample and the 50mL deionized water of 0.60g～1.40g in 100mL, the liner hydrothermal reaction kettle that is teflon toward volume, and tightly cover airtight;
(3) hydrothermal reaction kettle of sample will be housed by starting heating under room temperature, firing rate is 5 ℃/min, and after the temperature be heated between 110 ℃～130 ℃, keep constant temperature 40min～80min, this constant temperature time is corresponding to the thermostat temperature setting, with the chlorion by sample and the fluorine ion sample solution that becomes soluble in water with this understanding;
(4) after the hydrothermal reaction kettle that completes the constant temperature step is cooled to room temperature again, therefrom take out sample solution, and with the miillpore filter of 0.45 μ m, sample solution is carried out to separating and filtering, using and obtain the clear liquid as testing sample;
(5) by the condition of work of ion chromatograph, arrange as follows: chromatographic column is the i.e. 4 * 250mm anion-exchange column of AS23; Sample size is 10～15 μ L; Column temperature is 25～30 ℃; Autosynthesis rejector electric current is 45mA; Leacheate is 4.5mM Na
2cO
3/ 8mM NaHCO
3solution; Flow velocity is 0.5～1.5mL/min;
(6) chlorion and the fluorine ion standard solution of preparation variable concentrations, with this standard solution of ion-chromatographic determination, according to peak area and ion concentration, obtain the typical curve of chlorion and fluorine ion and the regression equation of typical curve under the described condition of work of step (5);
(7) use the ion-chromatographic determination testing sample under the described condition of work of step (5), obtain corresponding peak area, correspond to again typical curve or by the regression equation of typical curve, obtain testing sample and be the concentration of chlorion and fluorine ion in tested solid biomass fuel.
2. the assay method of chlorion and content of fluoride ion in solid biomass fuel according to claim 1, it is characterized in that: in step (2), described sample is 0.8g, and in step (3), described thermostat temperature is 110 ℃, and constant temperature time is 80min.
3. the assay method of chlorion and content of fluoride ion in solid biomass fuel according to claim 1, it is characterized in that: in step (2), described sample is 1.4g, and in step (3), described thermostat temperature is 110 ℃, and constant temperature time is 80min.
4. the assay method of chlorion and content of fluoride ion in solid biomass fuel according to claim 1, it is characterized in that: in step (2), described sample is 0.6g, and in step (3), described thermostat temperature is 130 ℃, and constant temperature time is 40min.
5. the assay method of chlorion and content of fluoride ion in solid biomass fuel according to claim 1, it is characterized in that: in step (2), described sample is 1.2g, and in step (3), described thermostat temperature is 130 ℃, and constant temperature time is 40min.
6. the assay method of chlorion and content of fluoride ion in solid biomass fuel according to claim 1, it is characterized in that: in step (2), described sample is 0.6g, and in step (3), described thermostat temperature is 110 ℃, and constant temperature time is 80min.
7. the assay method of chlorion and content of fluoride ion in solid biomass fuel according to claim 1, it is characterized in that: in step (2), described sample is 1.4g, and in step (3), described thermostat temperature is 130 ℃, and constant temperature time is 40min.
8. according to the assay method of chlorion and content of fluoride ion in the described solid biomass fuel of claims 1 to 3 any one, it is characterized in that: in step (5), described sample size is 10 μ L, and column temperature is 25 ℃, and flow velocity is 1.0mL/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103627759A CN103472146A (en) | 2013-08-19 | 2013-08-19 | Method for measuring content of chloridion and fluorinion in solid biomass fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103627759A CN103472146A (en) | 2013-08-19 | 2013-08-19 | Method for measuring content of chloridion and fluorinion in solid biomass fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103472146A true CN103472146A (en) | 2013-12-25 |
Family
ID=49797074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103627759A Pending CN103472146A (en) | 2013-08-19 | 2013-08-19 | Method for measuring content of chloridion and fluorinion in solid biomass fuel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103472146A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142591A (en) * | 2018-11-06 | 2019-01-04 | 国家烟草质量监督检验中心 | The hydro-thermal extracting method and Liquid Chromatography-Tandem Mass Spectrometry measuring method of maleic hydrazide are remained in a kind of tobacco |
| CN109387461A (en) * | 2018-12-07 | 2019-02-26 | 吉林宏日新能源股份有限公司 | Biomass molding fuel quality inspection system and its method |
| CN110398564A (en) * | 2019-06-24 | 2019-11-01 | 广东省特种设备检测研究院中山检测院 | The detection method of chlorinity in a kind of solid biomass fuel |
| CN114200039A (en) * | 2021-11-25 | 2022-03-18 | 天津海嘉斯迪新材料合伙企业(有限合伙) | Method for detecting HF content in fluorine gas |
-
2013
- 2013-08-19 CN CN2013103627759A patent/CN103472146A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| MARCUS NAGLE，ET AL: "Fruit processing residues as an alternative fuel for drying in Northern Thailand", 《FUEL》 * |
| 史明志: "《固体生物质燃料中氯的测定方法研究》", 31 December 2011, 煤炭工业出版社 * |
| 熊文明等: "微波浓缩／离子色谱法测定印刷电路板表面的7种痕量无机阴离子", 《分析测试学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142591A (en) * | 2018-11-06 | 2019-01-04 | 国家烟草质量监督检验中心 | The hydro-thermal extracting method and Liquid Chromatography-Tandem Mass Spectrometry measuring method of maleic hydrazide are remained in a kind of tobacco |
| CN109387461A (en) * | 2018-12-07 | 2019-02-26 | 吉林宏日新能源股份有限公司 | Biomass molding fuel quality inspection system and its method |
| CN110398564A (en) * | 2019-06-24 | 2019-11-01 | 广东省特种设备检测研究院中山检测院 | The detection method of chlorinity in a kind of solid biomass fuel |
| CN114200039A (en) * | 2021-11-25 | 2022-03-18 | 天津海嘉斯迪新材料合伙企业(有限合伙) | Method for detecting HF content in fluorine gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102368065B (en) | Device for determining mercury content with different forms in coal-burning flue gas and its application | |
| CN103472146A (en) | Method for measuring content of chloridion and fluorinion in solid biomass fuel | |
| CN103149271A (en) | Method for simultaneously measuring heavy metals with different forms in coal-fired flue gas | |
| CN103529162A (en) | Determination method for total organic carbon (TOC) of solid combustible matters | |
| CN101281178A (en) | Quantitative detecting method of trace amount phosphine gas and enriching apparatus thereof | |
| CN202814873U (en) | Detector for volatile sulphides in surface seawater and atmosphere | |
| CN103226137B (en) | Method for determination of low-concentration H2S in air | |
| CN103512858A (en) | Measuring method of carbon, hydrogen and nitrogen contents in biomass fuel | |
| CN107941718A (en) | flue gas pollutant environment monitoring system | |
| CN111007167A (en) | Method for measuring volatile organic compounds in fixed pollution source | |
| CN102590375A (en) | Method for extracting anions from plant medicine by alkali fusion method performing ion chromatographic detection | |
| CN112198266A (en) | Method for measuring chlorine content in coal and coal gasification products | |
| CN103335991B (en) | Method for separating and detecting complicated mixed state arsenic in coal | |
| CN101241067A (en) | Total organic carbon total nitrogen combined measuring instrument | |
| CN101275931B (en) | Method for detecting trace quantity SOX in hydrogen using adsorption concentration | |
| CN102768191B (en) | Method for easily detecting trace thallium in water | |
| CN108593606B (en) | Method for testing germanium content in coal by utilizing atomic fluorescence spectroscopy | |
| CN113804810A (en) | Chromatographic separation column and method for detecting VOCs gas chromatography | |
| CN115343387B (en) | Method for detecting content of nonmetallic elements in organic hazardous waste | |
| CN100399018C (en) | Capillary electrophoretic testing method for soil inorganic anion | |
| CN202837136U (en) | Acid salt content analysis device | |
| CN202614673U (en) | Movable flue gas monitoring and analyzing device | |
| CN101477087B (en) | Quantitative measuring method for trace amount of foreign gas in chlorine | |
| Yang et al. | Gas dispersion concentration of trace inorganic contaminants from fuel gas and analysis using head-column field-amplified sample stacking capillary electrophoresis | |
| Pfeffer et al. | Contribution of wood burning to the exceedance of PM10 limit values in North Rhine-Westphalia |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131225 |