CN113406060A - Method for measuring sodium content in slagging agent - Google Patents
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- CN113406060A CN113406060A CN202110864405.XA CN202110864405A CN113406060A CN 113406060 A CN113406060 A CN 113406060A CN 202110864405 A CN202110864405 A CN 202110864405A CN 113406060 A CN113406060 A CN 113406060A
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- 239000011734 sodium Substances 0.000 title claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 30
- 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 title claims abstract description 23
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004040 coloring Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 claims abstract description 10
- 230000003595 spectral effect Effects 0.000 claims abstract description 9
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000002835 absorbance Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 229910001414 potassium ion Inorganic materials 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 238000013211 curve analysis Methods 0.000 claims 1
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 150000002815 nickel Chemical class 0.000 claims 1
- 238000004458 analytical method Methods 0.000 abstract description 10
- 239000000243 solution Substances 0.000 description 36
- 238000010438 heat treatment Methods 0.000 description 20
- 239000000523 sample Substances 0.000 description 20
- 238000011088 calibration curve Methods 0.000 description 9
- 238000000354 decomposition reaction Methods 0.000 description 9
- 150000002500 ions Chemical class 0.000 description 9
- 238000001816 cooling Methods 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000012488 sample solution Substances 0.000 description 4
- 239000012086 standard solution Substances 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 230000005283 ground state Effects 0.000 description 3
- 238000009616 inductively coupled plasma Methods 0.000 description 3
- 238000012417 linear regression Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010813 internal standard method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910001631 strontium chloride Inorganic materials 0.000 description 1
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- 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
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/73—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using plasma burners or torches
-
- 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
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (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)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention provides a method for measuring sodium content in a slagging agent, which comprises the following steps: a. decomposing a slagging agent sample by aqua regia under the microwave condition of 200-220 ℃, dissolving the slagging agent sample in water, filtering to remove insoluble substances to obtain a target solution, and adding a potassium ion solution with the content of 0.01mg/mL into the target solution; b. selecting five parts of 2mL coloring liquid, sequentially adding 2-10 mL of target solution into the coloring liquid, and adding water to dilute the target solution to 200mL to obtain a solution to be detected; c. selecting the spectral line wavelength of the analytical element sodium as 589.5 as an analytical line; d. measuring the absorbance of the solution to be measured by adopting an inductively coupled plasma atomic emission spectrometry, and making a curve chart; e. and analyzing according to the graph to obtain the sodium concentration. The method has the advantages of high analysis speed, wide dynamic linear range and higher precision, and can be widely applied to modern metallurgical analysis.
Description
Technical Field
The invention belongs to the field of chemical detection, and particularly relates to determination of sodium content in a slagging agent.
Background
With the development of the steel-making industry in China and the increasing shortage of international iron ore resources, the usage amount of waste steel in the steel-making process is increased continuously, steel plants generally add different heating agents and a part of slag melting agents into a furnace according to smelting requirements at the initial stage of smelting, the heating agents are high-grade ferrosilicon, silicon-carbon synthetic balls and the like, and the conventional slag melting agents comprise magnesium oxide-containing slag-making materials such as light-burned magnesium balls and light-burned dolomite. The heat generating agent generally contains a certain amount of ferrosilicon, the production cost of the ferrosilicon is high, and the ferrosilicon can bring serious environmental load, and the slagging agent is a material with high slagging and slagging speed. Various reagents are adopted to dissolve reagents such as nitric acid, perchloric acid, hydrofluoric acid, strontium chloride and the like, the dissolving steps are complicated, the analysis period is long, and the labor intensity is high.
At present, elements in the slagging agent are basically detected by ICP-AES.
However, the detection method has the disadvantages of troublesome detection steps, slow reaction speed and low precision.
Disclosure of Invention
In order to solve the problems, the technical scheme of the invention is as follows: the slag former powder sample is simply and rapidly dissolved by adopting two reagents, and the measurement is carried out by utilizing an inductively coupled plasma emission spectrometer.
A method for measuring the sodium content in a slagging agent comprises the following steps:
a. decomposing a slagging agent sample by aqua regia under the microwave condition of 200-220 ℃, dissolving the slagging agent sample in water, filtering to remove insoluble substances to obtain a target solution, and adding a potassium ion solution with the content of 0.01mg/mL into the target solution;
b. selecting five parts of 2mL coloring liquid, sequentially adding 2-10 mL of target solution into the coloring liquid, and adding water to dilute the target solution to 200mL to obtain a solution to be detected;
c. selecting the spectral line wavelength of the analytical element sodium as 589.5 as an analytical line;
d. measuring the absorbance of the solution to be measured by adopting an inductively coupled plasma atomic emission spectrometry, and making a curve chart;
e. and analyzing according to the graph to obtain the sodium concentration.
Preferably, aqua regia in the step a is hydrochloric acid and nitric acid according to the volume ratio: 3: 1.
Preferably, the coloring liquid in the step b is a mono-nickel salt coloring liquid, which has electrolytic properties.
Preferably, the flow rate of plasma gas in the inductively coupled plasma atomic emission spectrometry in the step d is 15L/min.
Preferably, the experimental water in step b is deionized water.
The method has the advantages of high analysis speed, wide dynamic linear range and higher precision, and can be widely applied to modern metallurgical analysis.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of the method for determining the sodium content in the slagging agent according to the present invention.
Detailed Description
The main instruments and parameters used in the examples were as follows:
optima-8000DV inductively coupled plasma atomic emission spectrometer: an acid-etching resistant atomizer and an argon purifier;
when the device is used, a solution to be detected is sprayed into fog through the acid-corrosion-resistant atomizer, enters flame along with a carrier, and is dissociated into ground state ions in the flame, when the inductively coupled plasma atomic emission spectrometer radiates characteristic wavelength light of an element to be detected to pass through the flame, the characteristic wavelength light is absorbed by the flame, and under a certain condition, the change of the light intensity of the characteristic wavelength and the concentration of the ground state atoms of the element to be detected in the flame have a quantitative relation, so that the quantitative relation is formed between the change of the light intensity of the characteristic wavelength and the concentration of the ground state atoms of the element to be detected in a sample, and the percentage content of the element in the solution to be detected can be calculated through a standard addition method.
The first embodiment is as follows:
weighing 0.1g of a slagging agent sample in a 250mL beaker, adding 20mL of aqua regia, adding a potassium ion solution with the content of 0.01mg/mL (the high-concentration ion peak can be prevented from covering a low-concentration ion peak and being not detected), slightly shaking, putting the sample on a microwave heating device for heating, heating by adopting microwave heating compared with the traditional heating plate, wherein the microwave heating has better decomposition capacity so as to improve the uniformity degree of decomposition and ensure the completeness of the decomposition, the microwave temperature is controlled at 200 ℃, the volume is kept unchanged, taking down and cooling after boiling for about 15min, dissolving the sample in a 500mL volumetric flask, shaking uniformly, and filtering a test solution to a 100mL volumetric flask by using medium-speed filter paper for later use, wherein the solution is called as a target solution.
Selecting five parts of 2mL coloring liquid, sequentially adding 2-10 mL of target solution into the coloring liquid, and adding water to dilute the target solution to 200mL to obtain a solution to be detected;
specifically, five parts of 2mL electrolytic mono-nickel salt coloring solution are selected, specifically, the first part is not added with the target solution, and the second part to the fifth part are respectively added with 2mL, 5mL, 8mL and 10 mL;
measuring 1.00mL, 2.00mL, 4.00mL, 6.00mL and 8.00mL respectively, measuring to 5 conical flasks added with 10mL of water, adding 20mL of aqua regia respectively, taking down, cooling, and shaking to a volume of 100 mL. The concentrations are respectively 10mg/L, 20mg/L, 40mg/L, 60mg/L and 80 mg/L;
selecting the wavelength of a spectral line of an analytical element sodium as 589.5 as an analytical line, obtaining the analytical line through experiments, carrying out detection on the analytical line with the wavelength of 589.5 to obtain the highest accuracy, measuring the absorbance of a solution to be detected by adopting an inductively coupled plasma atomic emission spectrometry, and making a curve;
and (3) measuring the standard solution series according to the working conditions set by the instrument, and drawing a calibration curve by taking the mass concentration of the Na element as an abscissa and the emission intensity as an ordinate. The linear range, linear regression equation and correlation coefficient of the calibration curve are shown in table 1.
TABLE 1 calibration Curve first off parameters
| Element(s) | Analysis line/nm | Linear range mg/L | Correlation coefficient |
| Na | 589.5 | 2-20mg/L | 0.9991 |
The content of sodium in the slag melting agent is measured according to a test method, the precision is examined, the results are shown in the following table 2, and the relative deviation of the results calculated and measured in the table 2 is less than 0.5 percent
TABLE 2 precision of analytical results
| Element(s) | Average value of measurement results x (mg/L) | Standard deviation s (%) | Relative standard deviation RSD (%) |
| Na | 15.14 | 0.072 | 0.47 |
Therefore, the RSD of the sample measured by the method is less than 5 percent, and the precision is higher.
In ICP-AES, there is less chemical interference due to the higher temperature of the plasma, the main ones being physical and spectral interference. The physical interference can be eliminated by adopting a matrix matching method and an internal standard method, namely, the difference of test data caused by different matrixes is eliminated by adding hydrochloric acid and nitric acid into a standard solution, and the interference caused by the fluctuation of the sampling amount and the atomization efficiency of an atomizer due to the fluctuation of argon gas and the fluctuation of conditions such as instrument environment and the like is eliminated by the internal standard method. Spectral interference can be avoided by selecting less interfering spectral lines and selecting appropriate background subtraction points.
Example two
Weighing 0.1g of a slagging agent sample in a 250mL beaker, adding 20mL of aqua regia, adding a potassium ion solution with the content of 0.01mg/mL (the high-concentration ion peak can be prevented from covering the low-concentration ion peak so that the low-concentration ion peak cannot be detected), slightly shaking, putting the sample on a microwave heating device for heating, heating by adopting microwave heating compared with the traditional heating plate, wherein the microwave heating has better decomposition capacity so as to improve the uniformity degree of decomposition and ensure the completeness of the decomposition, the microwave temperature is controlled at 220 ℃, the volume is kept unchanged, taking down the sample for cooling after boiling for about 15min, dissolving the sample in a 500mL volumetric flask, shaking up the sample, and filtering the sample solution into a 100mL volumetric flask by using filter paper for later use, wherein the sample solution is called as a target solution.
Selecting five parts of 2mL coloring liquid, sequentially adding 2-10 mL of target solution into the coloring liquid, and adding water to dilute the target solution to 200mL to obtain a solution to be detected;
specifically, five parts of 2mL electrolytic mono-nickel salt coloring solution are selected, specifically, the first part is not added with the target solution, and the second part to the fifth part are respectively added with 2mL, 5mL, 8mL and 10 mL;
measuring 1.00mL, 2.00mL, 4.00mL, 6.00mL and 8.00mL respectively, measuring to 5 conical flasks added with 10mL of water, adding 20mL of aqua regia respectively, taking down, cooling, and shaking to a volume of 100 mL. The concentrations are respectively 10mg/L, 20mg/L, 40mg/L, 60mg/L and 80 mg/L;
selecting the wavelength of a spectral line of an analytical element sodium as 589.5 as an analytical line, obtaining the analytical line through experiments, carrying out detection on the analytical line with the wavelength of 589.5 to obtain the highest accuracy, measuring the absorbance of a solution to be detected by adopting an inductively coupled plasma atomic emission spectrometry, and making a curve;
and (3) measuring the standard solution series according to the working conditions set by the instrument, and drawing a calibration curve by taking the mass concentration of the Na element as an abscissa and the emission intensity as an ordinate. The linear range, linear regression equation and correlation coefficient of the calibration curve are shown in table 3.
TABLE 3 calibration Curve first off parameters
| Element(s) | Analysis line/nm | Linear range mg/L | Correlation coefficient |
| Na | 589.5 | 2-20mg/L | 0.9991 |
The content of sodium in the slag melting agent is measured according to a test method, the precision is examined, the results are shown in the following table 2, and the relative deviation of the results calculated and measured in the table 4 is less than 0.5 percent
TABLE 4 precision of analytical results
| Element(s) | Average value of measurement results x (mg/L) | Standard deviation s (%) | Relative standard deviation RSD (%) |
| Na | 15.12 | 0.0711 | 0.45 |
Therefore, the RSD of the sample measured by the method is less than 5 percent, and the precision is higher.
Example two
Weighing 0.1g of a slagging agent sample in a 250mL beaker, adding 20mL of aqua regia, adding a potassium ion solution with the content of 0.01mg/mL (the high-concentration ion peak can be prevented from covering the low-concentration ion peak so that the low-concentration ion peak cannot be detected), slightly shaking, putting the sample on a microwave heating device for heating, heating by adopting microwave heating compared with the traditional heating plate, wherein the microwave heating has better decomposition capacity so as to improve the uniformity degree of decomposition and ensure the completeness of the decomposition, the microwave temperature is controlled at 220 ℃, the volume is kept unchanged, taking down the sample for cooling after boiling for about 15min, dissolving the sample in a 500mL volumetric flask, shaking up the sample, and filtering the sample solution into a 100mL volumetric flask by using filter paper for later use, wherein the sample solution is called as a target solution.
Selecting five parts of 2mL coloring liquid, sequentially adding 2-10 mL of target solution into the coloring liquid, and adding water to dilute the target solution to 200mL to obtain a solution to be detected;
specifically, five parts of 2mL electrolytic mono-nickel salt coloring solution are selected, wherein the first part is not added with the target solution, and the second part to the fifth part are respectively added with 3mL, 4mL, 7mL and 9 mL;
respectively measuring 1.00mL, 2.00mL, 4.00mL, 6.00mL and 8.00mL to 5 conical flasks added with 10mL of water, respectively adding 20mL of aqua regia, taking down and cooling, fixing the volume to 100mL of volumetric flasks, and shaking up to obtain concentrations of 10mg/L, 20mg/L, 40mg/L, 60mg/L and 80 mg/L;
selecting the wavelength of a spectral line of an analysis element sodium as 589.5 as an analysis line, measuring the absorbance of the solution to be measured by adopting an inductively coupled plasma atomic emission spectrometry, and making a curve;
and (3) measuring the standard solution series according to the working conditions set by the instrument, and drawing a calibration curve by taking the mass concentration of the Na element as an abscissa and the emission intensity as an ordinate. The linear range, linear regression equation and correlation coefficient of the calibration curve are shown in table 5.
TABLE 5 calibration Curve first off parameters
| Element(s) | Analysis line/nm | Linear range mg/L | Correlation coefficient |
| Na | 589.5 | 2-20mg/L | 0.9991 |
The content of sodium in the slag melting agent is measured according to a test method, the precision is examined, the results are shown in the following table 2, and the relative deviation of the results calculated and measured in the table 6 is less than 0.5 percent
TABLE 6 precision of analytical results
| Element(s) | Average value of measurement results x (mg/L) | Standard deviation s (%) | Relative standard deviation RSD (%) |
| Na | 15.12 | 0.0711 | 0.45 |
Therefore, the RSD of the sample measured by the method under the condition that the temperature is 220 ℃ is smaller and has higher precision.
The invention has been described in an illustrative manner, and it is to be understood that the invention is not limited to the precise form disclosed, and that various insubstantial modifications of the inventive concepts and solutions, or their direct application to other applications without such modifications, are intended to be covered by the scope of the invention.
Claims (5)
1. A method for measuring the sodium content in a slagging agent is characterized in that,
a. decomposing a slagging agent sample by aqua regia under the microwave condition of 200-220 ℃, dissolving the slagging agent sample in water, filtering to remove insoluble substances to obtain a target solution, and adding a potassium ion solution with the content of 0.01mg/mL into the target solution;
b. selecting five parts of 2mL coloring liquid, sequentially adding 2-10 mL of target solution into the coloring liquid, and adding water to dilute the target solution to 200mL to obtain a solution to be detected;
c. selecting the spectral line wavelength of the analytical element sodium as 589.5 as an analytical line;
d. measuring the absorbance of the solution to be measured by adopting an inductively coupled plasma atomic emission spectrometry, and making a curve;
e. sodium concentration was obtained from curve analysis.
2. The method for determining the sodium content in the slagging agent according to claim 1, wherein: in the step a, aqua regia is hydrochloric acid and nitric acid according to the volume ratio: 3: 1.
3. The method for determining the sodium content in the slagging agent according to claim 1, wherein: the coloring liquid in the step b is a single nickel salt coloring liquid which has electrolysis property.
4. The method for determining the sodium content in the slagging agent according to claim 1, wherein: and d, in the step d, the flow of plasma gas in the inductively coupled plasma atomic emission spectrometry is 15L/min.
5. The method for determining the sodium content in the slagging agent according to claim 1, wherein: the experimental water in step b is deionized water.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112710650A (en) * | 2019-12-24 | 2021-04-27 | 科之杰新材料集团有限公司 | Method for rapidly and accurately measuring main chemical component content of cement |
| CN112304925A (en) * | 2020-09-15 | 2021-02-02 | 广东韶钢松山股份有限公司 | Method for detecting manganese oxide in composite slag melting agent |
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