CN116148243A - A kind of detection method of total amount of inorganic carbon in organic decarburization solution - Google Patents

Abstract

The invention discloses a method for detecting the total amount of inorganic carbon in an organic decarburization solution, and relates to the technical field of detection and analysis of element content. liquid mixed solution; the gas-liquid mixed solution is separated by gas separation technology to obtain carbon dioxide gas and decarburized liquid; the carbon dioxide gas is loaded into the ICP-AES instrument for the detection of carbon element content, and the decarburized Liquid drains. The method of the invention is simple and easy to operate, reduces the detection and analysis time, improves the detection precision and accuracy, expands the detection range, and greatly reduces the detection cost.

Description

A kind of detection method of total amount of inorganic carbon in organic decarburization solution

technical field

The invention relates to the technical field of detection and analysis of element content, in particular to a detection method for the total amount of inorganic carbon in an organic decarburization solution.

Background technique

In order to cope with global warming and promote sustainable economic development, in view of the fact that the global fossil fuel energy structure is difficult to change in a short period of time, resulting in high carbon dioxide emissions in the environment, countries around the world have reached a consensus that they are attaching great importance to carbon dioxide in industrial flue gas It is urgent to control and solve the problem of carbon dioxide emissions in industrial flue gas, especially in industries with large carbon dioxide emissions such as iron and steel metallurgy, thermal coal and electricity.

At present, the mainstream technology for removing carbon dioxide in flue gas is to use chemical solvent method, physical solvent method, membrane separation method and other absorption methods. Among them, due to the characteristics of large absorption, good effect, low cost, recyclable detergent, and full recovery and utilization to produce high-purity carbide products, organic amines are widely used in high-temperature, large-volume, and complex-composition cigarettes. gas treatment.

The organic amine solution can effectively absorb carbon dioxide in the flue gas, and the absorbed carbon dioxide mainly exists in the absorption liquid in the form of inorganic carbonic acid. The concentration of carbon plays an important guiding role in reflecting the absorption performance and absorption mechanism of the absorption liquid.

At present, the methods for determining carbonate and bicarbonate in the absorption liquid mainly include: titration, colorimetry, ion chromatography, etc. The titration method has the disadvantages that the titration end point is difficult to judge and the error is large; the colorimetric method is based on the color reaction of colored compounds, and the detection process is easily disturbed; the chromatography method integrates separation and analysis, and has high separation efficiency and analysis speed. It has the advantages of fast detection and high detection sensitivity, but its qualitative ability is poor and the upper limit of detection is low. It is not suitable for the detection of high-concentration carbon dioxide absorbed by organic amine solutions, and complex methods need to be used to eliminate the interference of complex metal cations coexisting in the solution.

To this end, a sample pretreatment preparation method and element content detection method for determining the total concentration of inorganic carbon in organic decarburization solutions based on gas generation separation technology combined with inductively coupled plasma atomic emission spectroscopy (ICP-AES) detection technology were established. .

Since the carbon element in the organic decarburization solution exists in two completely different forms, including the carbon element existing in the form of organic carbon in the decarburization organic components such as organic amines, and the carbon element in the form of inorganic carbon in carbonate ions and bicarbonate ions Carbon exists in the form of carbon. Therefore, the conventional Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) can only measure the total content of all two forms of carbon in the solution, and cannot obtain the inorganic carbon in the solution alone. concentration content.

Contents of the invention

The purpose of the present invention is to provide a method for detecting the total amount of inorganic carbon in an organic decarburization solution, which is simple and easy to operate, reduces the detection and analysis time, improves the precision and accuracy of detection, expands the detection range, and greatly reduces the detection time. cost. To achieve the above object, the present invention provides the following technical solutions:

The invention discloses a method for detecting the total amount of inorganic carbon in an organic decarburization solution. The detection method comprises the following steps:

The organic decarburization solution is pretreated and then reacted with a dilute acid solution to obtain a gas-liquid mixture;

The gas-liquid mixture is separated by gas generation separation technology to obtain carbon dioxide gas and decarbonized liquid;

The carbon dioxide gas is loaded into the ICP-AES instrument to detect the carbon element content, and the decarburized liquid is discharged.

In a possible implementation, the pretreatment of the organic decarburization solution and the reaction with the dilute acid solution to obtain a gas-liquid mixture specifically includes:

Dilute the organic decarburization solution with water by 0 to 100 times to obtain the diluted organic decarburization solution;

The diluted organic decarburization solution is mixed and reacted with the dilute acid solution to obtain a gas-liquid mixture.

In a possible implementation manner, the mixing ratio of the diluted organic decarburization solution to the dilute acid solution is 1:1-2;

Wherein, the dilute acid solution is one of dilute hydrochloric acid solution, dilute nitric acid solution or dilute sulfuric acid solution.

In a possible implementation, the preparation method of the dilute acid solution is specifically:

According to the volume ratio, 1 to 3 parts of concentrated hydrochloric acid, concentrated nitric acid or concentrated sulfuric acid are added to 1 part of water and mixed evenly;

Wherein, the mass percentage concentration of the concentrated hydrochloric acid is 36%-38%, the mass percentage concentration of the concentrated nitric acid is 65%-68%; the mass percentage concentration of the concentrated sulfuric acid is 95%-98%.

In a possible implementation, the gas-liquid mixture is separated by gas generation separation technology to obtain carbon dioxide gas and decarbonized liquid, which specifically includes:

The gas-liquid mixed solution is continuously transported to the gas-liquid separation device through the standard peristaltic pump and pump tube of the ICP-AES instrument for separation to obtain carbon dioxide gas and decarbonized liquid.

In a possible implementation manner, the rotation speed of the peristaltic pump is 1.0-2.0 mL/min.

In a possible implementation, the carbon dioxide gas is loaded into the ICP-AES instrument to detect the carbon element content, and the decarburization liquid is discharged, which specifically includes:

The carbon dioxide gas is loaded into the ICP-AES instrument through the argon gas in a swirl state;

Using ICP-AES to measure the spectral signal intensity of the carbon element analysis line;

The total concentration of inorganic carbon in the organic decarburization solution is obtained by calculating the calibration curve, and the detection of the carbon element content is completed;

The decarburized liquid is discharged through a waste liquid pipeline.

In a possible implementation manner, the argon flow rate is 0.2-0.6 L/min.

In a possible implementation, the calibration curve is directly drawn from a carbon element standard solution with a concentration gradient and a content level covering 0-500 mg/L;

Wherein, the configuration method of described standard solution is specifically:

Weigh sodium carbonate or sodium bicarbonate and directly dissolve in water at room temperature to dilute to constant volume, and prepare to contain inorganic carbon concentrations of 0mg/L, 10mg/L, 100mg/L, 200mg/L, 300mg/L, 400mg/L Standard solutions of L, 500mg/L, 600mg/L and 720mg/L.

In a possible implementation manner, the detection parameters of the ICP-AES instrument are:

The RF power is 1150-1250W, the auxiliary gas flow rate is 0.2-0.4L/min, the observation height is 11-12mm, the measurement integration time is 2-10s, and the analysis line is C 193.030nm and/or C 247.856nm.

Technical effect and advantage of the present invention:

The combined application of gas generation separation technology and ICP-AES detection technology simply and effectively eliminates the interference of organic compounds and their complex coexistence combinations in the organic decarburization solution system on the determination of inorganic carbon content. It has the advantages of no more than 3 minutes, high precision and accuracy, and the detection range is 1mg/L-70g/L. At the same time, the dilution ratio of the method is controlled within the range of 0-100 times, so the upper limit of its determination can be further expanded by expanding the dilution ratio. , to meet the needs of efficient, rapid, precise and accurate detection of the total concentration of inorganic carbon in the organic decarburization solution, to provide accurate and quantitative guidance data for evaluating the absorption performance of the decarbonization absorption solution, and to provide support for the development and industrial application of the decarburization solution Detection technical support.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure pointed out in the written description, claims hereof as well as the appended drawings.

Description of drawings

Fig. 1 is a flow chart of a method for detecting the total amount of inorganic carbon in an organic decarburization solution according to the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The purpose of the present invention is to establish a detection method for measuring the total concentration of inorganic carbon elements in the form of carbonate ions and bicarbonate ions under the coexistence system of organic substances in the decarburization absorption solution.

In order to achieve the above purpose, it is necessary to completely eliminate the interference effect of the organic carbon element in the decarburized organic compound in the sample solution and the matrix effect of the coexisting components on the determination of the content of the inorganic carbon element.

In order to solve the deficiencies in the prior art, the present invention discloses a method for detecting the total amount of inorganic carbon in an organic decarburization liquid. As shown in Figure 1, the detection method includes the following steps:

The organic decarburization solution is pretreated and then reacted with a dilute acid solution to obtain a gas-liquid mixture;

The gas-liquid mixture is separated by gas generation separation technology to obtain carbon dioxide gas and decarbonized liquid;

The carbon dioxide gas is loaded into the ICP-AES instrument to detect the carbon element content, and the decarburized liquid is discharged.

Specifically, the organic decarburization solution and the dilute acid solution are mixed and reacted online by using a peristaltic pump and a pump tube. Afterwards, they are converted into the form of carbon dioxide; then, the gas-liquid mixture after the chemical reaction passes through the cyclone gas-liquid separation device, and the carbon dioxide gas produced by the reaction is separated from the gas-liquid mixture by the swirling flow of argon. And load it into the ICP-AES instrument for the detection of carbon content. This method uses the technical measures of gas generation and gas-liquid separation to effectively separate the inorganic carbon element to be measured from the organic decarburization solution system and the organic carbon element in the form of organic compounds in a simple, effective, fast and efficient manner. Completely eliminate the interference of organic carbon in the decarburized organic compounds in the sample solution and the matrix effect of coexisting components on the determination of the content of inorganic carbon, and achieve the goal of quickly and accurately measuring the total concentration of inorganic carbon in the organic decarburization solution , which meets the technical needs of evaluating the absorption and decarburization performance of organic decarbonization absorption solutions, and provides detection technical support and high-precision quantitative guidance data for the development of decarbonization solutions and industrial application process monitoring.

Further, the pretreatment method of the organic decarburization solution provided by the present invention is characterized in that: firstly, the original organic decarburization solution is divided according to the dilution ratio of 0 to 100 times, and directly diluted with water to form a sample solution; then, The ratio of the inner diameter of the sampling pump tube of the peristaltic pump that transmits the sample solution and the dilute acid solution is selected to be 1:1~2, and then the sample solution and The dilute acid solution is transferred to Y-type, T-type or other three-way devices for automatic online proportional mixing and chemical reaction. The bicarbonate ions and carbonate ions in the sample solution are all absorbed in the strong acidic medium system of the mixed solution. The reaction produces volatile and easy-to-escape carbon dioxide; finally, the gas-liquid mixed solution formed after the mixed reaction of the sample solution and the dilute acid solution is continuously transported to the gas-liquid separation device by a peristaltic pump, and the argon gas in a swirling state The carbon dioxide gas in the gas-liquid mixed solution is separated and loaded into the detection instrument for the determination of the carbon element content, and the liquid in the mixed reaction solution is accumulated on the wall of the vessel due to gravity settling and dripping or being thrown out by the centrifugal action of the cyclone gas Flow down, all discharged through the waste liquid pipe. Wherein, the peristaltic pump speed is 1.0～2.0mL/min, preferably 1.5mL/min; the argon flow rate is 0.2～0.6L/min, preferably 0.4L/min; the dilute acid solution is (1～3:1 ) of dilute hydrochloric acid, dilute nitric acid or dilute sulfuric acid solution, that is, according to the volume ratio, 1 to 3 parts of concentrated hydrochloric acid with a mass percentage concentration of 36% to 38%, concentrated nitric acid with a mass percentage concentration of 65% to 68% or mass percentage Concentrated sulfuric acid with a percentage concentration of 95% to 98% is uniformly mixed with 1 part of water.

Further, a kind of detection method that adopts ICP-AES to measure the total amount of inorganic carbon concentration in the organic decarburization solution provided by the present invention is characterized in that: the separated carbon dioxide gas is loaded into the ICP-AES by argon gas, using The spectral signal intensity of the carbon element analysis line in the ICP-AES measurement is used to calculate the total concentration of inorganic carbon in the organic decarburization solution through the calibration curve. Wherein, the calibration curve is directly drawn from a carbon element standard solution with a concentration gradient and a content level covering 0 to 500 mg/L. Preferably, sodium carbonate or sodium bicarbonate is directly dissolved in water at room temperature and diluted to volume, and is prepared to contain The concentration of inorganic carbon is 0mg/L, 10mg/L, 100mg/L, 200mg/L, 300mg/L, 400mg/L, 500mg/L, 600mg/L, 720mg/L; usually set the detection parameters of ICP-AES Including: RF power is 1150-1250W, preferably 1200W; auxiliary gas flow rate is 0.28-0.32L/min, preferably 0.3L/min; observation height is 11-12mm, preferably 11.5mm; measurement integration time is 2-10s, Preferably 6s; analysis line is C 193.030nm and/or C 247.856nm. The method can measure the total concentration of inorganic carbon in the organic decarburization solution with a content ranging from 1 mg/L to 70 g/L.

The detection method and its effects of the present invention will be explained and illustrated below in conjunction with specific examples. In the following examples, the ICP-AES instrument used is: Avio200 Inductively Coupled Plasma Atomic Emission Spectrometer (ICP-AES) from PE Company of the United States, but not limited thereto.

Example 1

Pretreatment of sample solution:

Separately take 2.0mL of the organic decarburization solution (Sample No. 1) in a 100mL volumetric flask, dilute with water to constant volume; prepare a dilute hydrochloric acid solution with a volume ratio concentration of "2:1", that is, the concentration of 2 parts by mass percentage is 36% -38% concentrated hydrochloric acid mixed with 1 part of water. A peristaltic pump tube with an inner diameter of 1.0mm was selected as the sampling pipeline for the sample solution, and a peristaltic pump tube with an inner diameter of 2.0mm was used as the sampling pipeline for the dilute acid solution, and the sample solution and the dilute acid solution were transferred to the Y-type three The mixed reaction is carried out in the ventilation device; the mixed reaction solution is continuously transported to the gas-liquid separator by the peristaltic pump, and the gas part in the mixed reaction solution is separated by the swirling argon gas and loaded into ICP-AES, and the mixed reaction solution The liquid part of the liquid is discharged through the waste liquid pipe.

ICP-AES determination of carbon concentration:

The carbon dioxide loaded into the ICP-AES by argon is dissociated, ionized and excited, and the emission spectrum signal intensity of the carbon element analysis line is measured, so as to calculate the total concentration of inorganic carbon elements through the calibration curve. Among them, sodium carbonate is directly dissolved in water at room temperature to dilute to constant volume, and the concentration of inorganic carbon is prepared to be 0mg/L, 10mg/L, 100mg/L, 200mg/L, 300mg/L, 400mg/L, 500mg/L L, 600mg/L, and 720mg/L standard solutions are used to draw the instrument calibration curve; setting the detection parameters of ICP-AES includes: the peristaltic pump speed is 1.5mL/min, the argon flow rate is 0.4L/min, and the RF power is 1200W, the auxiliary gas flow rate is 0.3L/min, the observation height is 11.5mm, the measurement integration time is 6s, and the analysis line is C193.030nm and/or C247.856nm.

Example 2

Pretreatment of sample solution:

Separately take 1.0mL of the organic decarburization solution (Sample No. 2) in a 100mL volumetric flask, dilute with water to volume; prepare a dilute hydrochloric acid solution with a volume ratio concentration of "3:1". That is, 3 parts of concentrated hydrochloric acid with a mass percentage concentration of 36%-38% and 1 part of water are uniformly mixed. The peristaltic pump tubing with an inner diameter of 1.0 mm was selected as the sampling pipe for the sample solution, and the peristaltic pump tubing with an inner diameter of 2.0 mm was used as the sampling pipe for the dilute acid solution. Other than that, the sample solution was pretreated in the same manner as in Embodiment 1.

ICP-AES determination of carbon concentration:

The concentration of carbon was determined in the same manner as in Implementation 1.

Example 3

Pretreatment of sample solution:

The organic decarburization solution (sample No. 3) is not diluted; prepare a dilute nitric acid solution with a volume ratio concentration of "1:1", that is, mix 1 part of concentrated nitric acid with a mass percentage concentration of 65%-68% and 1 part of water Made evenly. A peristaltic pump tube with an inner diameter of 1.0 mm was selected as the sampling tube for the sample solution, and a peristaltic pump tube with an inner diameter of 1.0 mm was used as the sample tube for the dilute acid solution. Except for this, the sample solution was pretreated in the same manner as in Embodiment 1.

ICP-AES determination of carbon concentration:

The concentration of carbon was determined in the same manner as in Implementation 1.

Example 4

Separately take 5.0mL of organic decarburization solution (Sample No. 4) in a 100mL volumetric flask, dilute with water to volume; prepare dilute hydrochloric acid solution with volume ratio concentration of "2:1". That is to say, 2 parts of concentrated hydrochloric acid with a mass percentage concentration of 36%-38% and 1 part of water are uniformly mixed. The peristaltic pump tubing with an inner diameter of 1.0 mm was selected as the sampling pipe for the sample solution, and the peristaltic pump tubing with an inner diameter of 2.0 mm was used as the sampling pipe for the dilute acid solution. Except for this, the sample solution was pretreated in the same manner as in Embodiment 1.

ICP-AES determination of carbon concentration:

The concentration of carbon was determined in the same manner as in Implementation 1.

Example 5

Separately take 2.5mL of the organic decarburization solution (Sample No. 5) into a 100mL volumetric flask, dilute to volume with water; prepare a dilute nitric acid solution with a volume ratio concentration of "2:1". That is to say, 2 parts of concentrated nitric acid with a mass percentage concentration of 65%-68% and 1 part of water are uniformly mixed. The peristaltic pump tubing with an inner diameter of 1.0 mm was selected as the sampling pipe for the sample solution, and the peristaltic pump tubing with an inner diameter of 2.0 mm was used as the sampling pipe for the dilute acid solution. Other than that, the sample solution was pretreated in the same manner as in Embodiment 1.

ICP-AES determination of carbon concentration:

The concentration of carbon was determined in the same manner as in Implementation 1.

Gas generation and gas-liquid separation effect evaluation

This embodiment is used to verify the effect of gas generation and gas-liquid separation of the present invention, that is, to verify whether the method adopted in the present invention fully converts carbonate ions and bicarbonate ions in the organic decarburization solution system into carbon dioxide gas, and The practical effect of effectively separating carbon dioxide from the organic decarburization solution system to avoid the interference of organic carbon on the determination of inorganic carbon.

At first, according to embodiment 1, embodiment 2 and embodiment 3 pretreatment step and carbon element determination step; Then, reactant is all changed into water by acid, repeats above-mentioned pretreatment step and carbon element determination step; In addition, with The pure decarburized solution containing only decarburized organic components that is used without decarburization and does not contain inorganic carbon elements is used as a blank solution sample, and the remaining steps are carried out according to Example 1 with acid and water as reactants for sample pretreatment and carbonization. Element determination. The results are shown in Table 1.

Table 1 Gas generation and gas-liquid separation effect evaluation test results

As can be seen from table 1 result, when the reactant in embodiment 1, embodiment 2 and embodiment 3 is acid, can measure and obtain the content of carbon element; Simultaneously, when by embodiment 1, embodiment 2 and embodiment 3 When the reactant in the solution was changed from acid to water, the content of carbon element was not detected; in addition, when using a pure organic decarburization blank solution as a sample, all the other operations were completely identical to the sample pretreatment and carbon element determination in the embodiment , no matter whether the reactant is acid or water, the content of carbon element is not detected.

Therefore, this test verified that this scheme can fully react carbonate ions and bicarbonate ions into carbon dioxide after the sample solution is mixed with acid, and the gas-liquid mixture formed after the gas reacts passes through the gas-liquid separation device Finally, the gas part and the liquid part in the gas-liquid mixture can be effectively separated, and the carbon dioxide gas in the gas-liquid mixture can be effectively loaded into the ICP-AES by the swirling argon to determine the content of inorganic carbon elements; at the same time, the gas-liquid The liquid part of the mixture is completely discharged through the waste liquid pipe, thus completely avoiding the decarbonized organic components coexisting in the gas-liquid mixture from being transmitted to ICP-AES, thereby completely avoiding the interference effect of organic carbon on the determination of inorganic carbon .

Precision Evaluation

Embodiment 3 and embodiment 4 are carried out 8 independent sample pretreatments and elemental content determination respectively, and the average value and relative standard deviation (RSD) of 8 measurement results are statistically calculated respectively, to evaluate the detection precision of this method level. The results are shown in Table 2.

Table 2 Precision Test (n=8) Results

It can be seen from the results in Table 2 that the relative standard deviation RSD of the measurement results of sample No. 3 and sample No. 4 is less than 3.0%, indicating that the repeated measurement results are consistent, and the method has good repeatability and reproducibility, and has high precision level.

Accuracy Evaluation

In the present invention, the accuracy of the method is verified through a standard addition recovery test. At first by embodiment 3 and embodiment 5, measure the original content of inorganic carbon element in sample No. 2 and sample No. 5 respectively; Then add the sodium carbonate standard solution of corresponding carbon content concentration in No. 2 sample respectively, No. The sodium bicarbonate standard solution of corresponding carbon content concentration was added in the sample, and the sample solution pretreatment and detection operation of embodiment 2 and embodiment 5 were repeated in the whole process, and the test results are shown in table 3.

Table 3 Recovery test result

It can be seen from the results in Table 3 that the recoveries of sample No. 3 and sample No. 5 are 97% to 103%, indicating that the analysis results have high accuracy and reliability.

In a word, the present invention adopts the combination of gas generation and separation technology and ICP-AES detection technology to simply and efficiently separate the inorganic carbon element to be measured from the organic carbon coexistence system in the form of carbon dioxide gas, and in the gas sampling mode by argon gas As the carrier gas is transported into ICP-AES and quickly measured, it completely eliminates the interference of organic compounds and their complex coexistence combinations in the organic decarburization solution system on the determination of inorganic carbon content. It has the advantages of less than 3 minutes, high precision and accuracy, and the detection range of the total inorganic carbon concentration in the decarburization solution can usually cover 1mg/L～70g/L. In special cases, it can be further expanded by expanding the dilution ratio. Assay upper limit. In addition, the entire process of solution mixing, gas generation, gas-liquid separation, and gas transmission can be completed online automatically, and the devices for gas generation and gas-liquid separation such as peristaltic pumps, swirl spray chambers, and argon gas are all ICP-AES The original parts of the standard configuration of the instrument are reconstructed and assembled. Therefore, not only can it be conveniently and perfectly connected with the testing instrument, but also there is no need for additional self-assembly or purchase of equipment, which greatly reduces the inspection cost.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still It is possible to modify the technical solutions recorded in the foregoing embodiments, or to perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present invention shall include Within the protection scope of the present invention.

Claims (10)

1. a detection method of inorganic carbon total amount in organic decarburization solution, is characterized in that, described detection method comprises the steps: The organic decarburization solution is pretreated and then reacted with a dilute acid solution to obtain a gas-liquid mixture; The gas-liquid mixture is separated by gas generation separation technology to obtain carbon dioxide gas and decarbonized liquid; The carbon dioxide gas is loaded into the ICP-AES instrument to detect the carbon element content, and the decarburized liquid is discharged. 2. the detection method of the total amount of inorganic carbon in a kind of organic decarburization solution according to claim 1, is characterized in that, described organic decarburization solution is carried out pretreatment and reacts with dilute acid solution to obtain gas-liquid mixture, Specifically include: Dilute the organic decarburization solution with water by 0 to 100 times to obtain the diluted organic decarburization solution; The diluted organic decarburization solution is mixed and reacted with the dilute acid solution to obtain a gas-liquid mixture. 3. The method for detecting the total amount of inorganic carbon in an organic decarburization solution according to claim 2, wherein the mixing ratio of the diluted organic decarburization solution to the dilute acid solution is 1:1-2; Wherein, the dilute acid solution is one of dilute hydrochloric acid solution, dilute nitric acid solution or dilute sulfuric acid solution. 4. according to the detection method of the total amount of inorganic carbon in a kind of organic decarburization solution described in claim 2 or 3, it is characterized in that, the preparation method of described dilute acid solution is specifically: According to the volume ratio, 1 to 3 parts of concentrated hydrochloric acid, concentrated nitric acid or concentrated sulfuric acid are added to 1 part of water and mixed evenly; Wherein, the mass percentage concentration of the concentrated hydrochloric acid is 36%-38%, the mass percentage concentration of the concentrated nitric acid is 65%-68%; the mass percentage concentration of the concentrated sulfuric acid is 95%-98%. 5. the detection method of total amount of inorganic carbon in a kind of organic decarburization solution according to claim 1, is characterized in that, described gas-liquid mixture is separated by gas generation separation technology, obtains carbon dioxide gas and decarburization Liquids, specifically: The gas-liquid mixture is continuously transported to the gas-liquid separation device through the standard peristaltic pump and pump tube of the ICP-AES instrument for separation to obtain carbon dioxide gas and decarbonized liquid. 6 . The method for detecting the total amount of inorganic carbon in an organic decarburization solution according to claim 5 , wherein the rotational speed of the peristaltic pump is 1.0-2.0 mL/min. 7. the detection method of the total amount of inorganic carbon in a kind of organic decarburization solution according to claim 1, is characterized in that, described carbon dioxide gas is loaded in the ICP-AES instrument and carries out the detection of carbon element content, The decarburization liquid is discharged, specifically including: The carbon dioxide gas is loaded into the ICP-AES instrument through the argon gas in a swirl state; Using ICP-AES to measure the spectral signal intensity of the carbon element analysis line; The total concentration of inorganic carbon in the organic decarburization solution is obtained by calculating the calibration curve, and the detection of the carbon element content is completed; The decarburized liquid is discharged through a waste liquid pipeline. 8 . The method for detecting the total amount of inorganic carbon in an organic decarburization solution according to claim 7 , wherein the argon flow rate is 0.2-0.6 L/min. 9. The detection method of the total amount of inorganic carbon in a kind of organic decarburization solution according to claim 7, characterized in that, the calibration curve is directly composed of a carbon element standard with a concentration gradient and a content level covering 0 to 500 mg/L solution drawing; Wherein, the configuration method of described standard solution is specifically: Weigh sodium carbonate or sodium bicarbonate and directly dissolve in water at room temperature to dilute to constant volume, and prepare to contain inorganic carbon concentrations of 0mg/L, 10mg/L, 100mg/L, 200mg/L, 300mg/L, 400mg/L Standard solutions of L, 500mg/L, 600mg/L and 720mg/L. 10. the detection method of total amount of inorganic carbon in a kind of organic decarburization solution according to claim 7, is characterized in that, the detection parameter of described ICP-AES instrument is: The RF power is 1150-1250W, the auxiliary gas flow rate is 0.2-0.4L/min, the observation height is 11-12mm, the measurement integration time is 2-10s, and the analysis line is C193.030nm and/or C247.856nm.

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