CN109557236A - The measurement method of nuclear power plant's primary Ioops lithium concentration - Google Patents
The measurement method of nuclear power plant's primary Ioops lithium concentration Download PDFInfo
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Abstract
The present invention relates to nuclear power plant's lithium concentration field of measuring technique, disclose a kind of measurement method of nuclear power plant's primary Ioops lithium concentration, comprising the following steps: provide the standard solution of multiple lithium ions containing various concentration；The peak height response for testing multiple standard solution respectively using cation chromatography instrument establishes the functional relation of the concentration of peak height response and lithium ion according to the concentration of the peak height response of multiple standard solution and the lithium ion of multiple standard solution；The peak height response of sample to be tested is tested, and obtains according to above-mentioned functional relation the concentration of the lithium ion in sample to be tested.The measurement method of above-mentioned nuclear power plant's primary Ioops lithium concentration need not carry out complicated pretreatment process, and work is simple, analysis time is short, substantially increase measurement efficiency；And the high stability of test result.
Description
Technical field
The present invention relates to nuclear power plant's lithium concentration field of measuring technique, more particularly to a kind of nuclear power plant's primary Ioops lithium concentration
Measurement method.
Background technique
In nuclear power plant's primary Ioops system, lithium hydroxide is injected into primary Ioops coolant as pH adjusting agent, with limit
The corrosion of structural metallic materials and fuel assembly in circuit under primary Ioops service condition is made, is the most important chemistry ginseng of major loop
One of number.When pH is maintained in a certain range, the corrosion of material and the corrosion product after reactor core activates is moved in circuit
Shifting can be limited in optimum range.The too low effect that control corrosion rate will be not achieved of lithium content, it is excessively high under primary Ioops service condition,
It contracts again there may be localized rich and generates the lower lithium metaborate (LiBO of solubility2), influence the stable operation of fuel can.For
Avoid the generation of both phenomenons, it is ensured that fuel can safe and stable operation, to lithium in " chemistry and radiochemistry specification "
Concentration gives highest and lowest limit value, thus primary Ioops lithium monitoring and accuracy with regard to increasingly important.
The daily radioactive sample of analysis is responsible in certain nuclear power plant hot laboratory (hereinafter referred to as laboratory), due to chemical supervision
It needs, requires to be sampled supervision to reactor-loop system (RCP system) daily, if water quality abnormal conditions will also increase
Bonus point analyses frequency.
Currently, the main means of domestic external pelivimetry primary Ioops lithium are flame atomic absorption spectrometrys, inhaled using NITRATE BY FLAME ATOMIC
Receive the process of instrument analysis are as follows: receive sample → transhipment sample from reactor control area and preheat 30 minutes to hot laboratory → instrument
→ according to working procedure to sample weighing → manually dilution plus nitric acid → shaking up → manually shift sample wait for apparatus measures →
Manual cleaning sample is simultaneously spare full of demineralized water by sample bottle.In addition, interference of the Flame Atomic Absorption Spectrometry instrument vulnerable to boric acid matrix, instrument
Device failure rate is higher, and the requirement to environment is very high (such as temperature, humidity), thus the stability of analysis method is poor.
Lithium content analysis be nuclear power plant it is daily must do project, when atom analysis instrument breaks down or ventilated environment is discontented
When foot requires, sample must give other power stations to analyze, the RCP sample presentation point by taking the second half year in 2017 as an example, between certain three power station of base
The number of analysis lithium content is up to 29 times, is related to 6 machines, 58 high radioactivity samples.Therefore, using flame atomic absorption spectrometry
The concentration of method measurement primary Ioops lithium has that the stability of intricate operation, low efficiency and NITRATE BY FLAME ATOMIC analysis method is poor.
Summary of the invention
Based on this, it is necessary to provide a kind of measurement side of nuclear power plant's primary Ioops lithium concentration easy to operate and high stability
Method.
A kind of measurement method of nuclear power plant's primary Ioops lithium concentration, comprising the following steps:
Multiple standard solution containing lithium ion are provided, and the concentration of the lithium ion in multiple standard solution is different；
The peak height response for testing multiple standard solution respectively using cation chromatography instrument, according to multiple standards
The concentration of the lithium ion of the peak height response of solution and multiple standard solution establishes the concentration of peak height response and lithium ion
Functional relation；
The peak height response of sample to be tested is tested, and according to the functional relation, is calculated in the sample to be tested
The concentration of lithium ion.
The peak height response according to multiple standard solution and multiple standards in one of the embodiments,
It includes: according to multiple institutes that the concentration of the lithium ion of solution, which establishes the step of functional relation of the concentration of peak height response and lithium ion,
The concentration for stating the peak height response of standard solution and the lithium ion of multiple standard solution establishes standard working curve, and by institute
It states standard working curve and carries out linear fit, obtain the functional relation.
The peak height for testing multiple standard solution respectively using cation chromatography instrument in one of the embodiments,
The step of response includes: that multiple standard solution are passed through the cation chromatography instrument test respectively, is obtained multiple described
The chromatogram of standard solution, and the peak height response of multiple standard solution is obtained by multiple chromatograms.
The step of offer multiple standard solution containing lithium ion include: to provide mother in one of the embodiments,
Liquid, and the mother liquor of different volumes is taken to obtain multiple solution containing lithium ion respectively, to multiple described containing lithium ion
Water dilution is separately added into solution to obtain multiple standard solution containing lithium ion.
In one of the embodiments, the functional relation of the concentration for establishing peak height response and lithium ion the step of
It later, further include the step verified to the functional relation before the step of peak height response of the test sample to be tested
Suddenly.
In one of the embodiments, the described the step of functional relation is verified include: prepare containing lithium from
The standard Quality Control sample of son, and record the compound concentration of the lithium ion in the standard Quality Control sample；Using the cation chromatography instrument
The peak height response for testing the standard Quality Control sample, according to the functional relation be calculated the lithium in the standard Quality Control sample from
The concentration of son；The concentration for the lithium ion being calculated in the standard Quality Control sample is compared with the compound concentration, and is counted
The absolute value of the concentration of the lithium ion in the standard Quality Control sample and the difference of the compound concentration is calculated, if the absolute value is pre-
If value is hereinafter, the step of carrying out the peak height response of the test sample to be tested.
The preset value is the 5% of the compound concentration of the standard Quality Control sample in one of the embodiments,.
The running parameter of the cation chromatography instrument in one of the embodiments, are as follows: point of the cation chromatography instrument
Analysis column is Cs16 analytical column, and is equipped with CG16 guard column；The electric current of the suppressor of the cation chromatography instrument is 20mA；The sun
Ion chromatograph is eluted using the leacheate of isoconcentration；The cation chromatography instrument uses quantitative loop quantitative manner sample introduction,
And single injected sampling amount is 10 μ L.
The leacheate is sulfuric acid solution in one of the embodiments, and the concentration of the leacheate is 10mmol/L
~20mmol/L.
The concentration of the lithium ion in the sample to be tested is in multiple standard solution in one of the embodiments,
Between the maximum concentration and Cmin of lithium ion.
Sample to be tested need not carry out complicated pretreatment process in the measurement method of above-mentioned nuclear power plant's primary Ioops lithium concentration, keep away
Manual operation bring error is exempted from, so that measurement result be made to have more accuracy.And it is directly taken from primary Ioops system a certain amount of
Sample to be tested is tested, easy to operate, analysis time is short；When testing peak height response using cation chromatography instrument, due to boron
Acid ion belongs to anion, and cation chromatography instrument does not retain anion, therefore surveys primary Ioops lithium using cation chromatography
Can not consider the influence of boric acid matrix in sample to be tested when the concentration of ion, and cation chromatography instrument by outside environmental elements such as
The influences such as temperature, humidity are smaller, thus the high stability of test method.
Detailed description of the invention
Fig. 1 is the flow chart of the test method of nuclear power plant's primary Ioops lithium concentration of an embodiment；
Fig. 2 is the standard working curve figure of embodiment 1.
Specific embodiment
To facilitate the understanding of the present invention, below in conjunction with specific embodiment to invention is more fully described.Tool
Preferred embodiment of the invention is given in body embodiment.But the invention can be realized in many different forms,
It is not limited to the examples described herein.On the contrary, purpose of providing these embodiments is makes to the disclosure
Understanding it is more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
Body embodiment purpose, it is not intended that in limitation the present invention.
Referring to Fig. 1, the measurement method of the primary Ioops lithium concentration of an embodiment the following steps are included:
S110: multiple standard solution containing lithium ion are provided, and the concentration of the lithium ion in multiple standard solution is different.
Specifically, the step of providing multiple standard solution containing lithium ion includes: offer mother liquor, and is taken respectively not androgynous
Long-pending mother liquor obtains multiple solution containing lithium ion, is separately added into water dilution into multiple solution containing lithium ion to obtain
Multiple standard solution containing lithium ion.Specifically, mother liquor is the standard solution that the concentration of lithium ion is 1000mg/kg.Into one
Step ground, mother liquor are the standard solution that the concentration of the lithium ion of Merck KGaA company production is 1000mg/kg.It is appreciated that multiple
Standard solution containing lithium ion can also be the standard solution for the different solubility directly bought.
Further, multiple standard solution containing lithium ion are at least three.Standard is molten in one of the embodiments,
Liquid is five.In five standard solution the concentration of lithium ion be respectively 0.50mg/kg, 1.00mg/kg, 2.00mg/kg,
3.00mg/kg and 4.00mg/kg.
S120: testing the peak height response of multiple standard solution using cation chromatography instrument respectively, molten according to multiple standards
The concentration of the lithium ion of the peak height response of liquid and multiple standard solution establishes the function of the concentration of peak height response and lithium ion
Relationship.
Specifically, the step of peak height response of multiple standard solution being tested using cation chromatography instrument respectively include: by
Multiple standard solution pass through cation chromatography instrument respectively to be tested, and obtains the chromatogram of multiple standard solution, and by multiple chromatograms
Obtain the peak height response of multiple standard solution.
Specifically, peak is established according to the concentration of the peak height response of multiple standard solution and the lithium ion of multiple standard solution
The step of functional relation of high response and the concentration of lithium ion includes: according to the peak height response of multiple standard solution and multiple
The concentration of the lithium ion of standard solution obtains standard working curve, and standard working curve is carried out linear fit, obtains multiple
The functional relation of the lithium ion of the peak height response of standard solution and multiple standard solution.Using cation chromatography instrument test lithium from
The response of the concentration of son, lithium ion is high, linear good using peak height as quantitative analysis.
Specifically, cation chromatography instrument includes analytical column, guard column, suppressor and electric conductivity detector.Further, ion
Chromatograph is DX500 cation chromatography instrument.Analytical column is Cs16 analytical column, and guard column is CG16 guard column.Guard column can be prevented
Only the pollutant in sample to be tested is directly entered analytical column and contamination analysis column, to increase the column life of analytical column.
Suppressor is 300 type suppressor of CSRS-4mm, and the electric current of suppressor is 20mA.Suppressor can reduce flowing
Mutually it is the background conductance of leacheate, increases by the conductance of measured ion.
The input mode of cation chromatography instrument uses quantitative loop quantitative manner, and single injected sampling amount is 10 μ L.Rinse procedures are set
It is set to the sulfuric acid solution isoconcentration elution of 10mmol/L~20mmol/L.Further, rinse procedures are set as 15mmol/L's
The elution of sulfuric acid solution isoconcentration.
Further, before cation chromatography instrument is switched on every time, it is required to the running parameter of setting ion chromatograph, and makes instrument
Device starts to be tested again when being in equilibrium state.It is appreciated that in actual operation, it is standby that ion chromatograph, which can be set,
State convenient for testing at any time, and need not all wait the stabilization of cation chromatography instrument before each test.Using cation chromatography side
Method surveys the concentration of lithium ion, and under conditions of instrument balance, the analysis of a sample, analysis time can be completed in 10 minutes
It is short, improve measurement efficiency.
S130: the peak height response of sample to be tested is tested, and is closed according to the function of the concentration of peak height response and lithium ion
System obtains the concentration of the lithium ion in sample to be tested.
Further, it after the step of establishing the functional relation of concentration of peak height response and lithium ion, tests to be measured
Before the step of peak height response of sample, further include the steps that verifying above-mentioned functional relation.
Specifically, the step of verifying to above-mentioned functional relation includes: standard Quality Control sample of the preparation containing lithium ion, and
The compound concentration of lithium ion in record standard Quality Control sample；Using the peak height response of cation chromatography instrument testing standard Quality Control sample
Value, the concentration of the lithium ion in standard Quality Control sample is calculated according to above-mentioned functional relation；The standard Quality Control sample that will be calculated
In the concentration of lithium ion be compared with compound concentration, and calculate the concentration and compound concentration of the lithium ion in standard Quality Control sample
Difference absolute value, if absolute value in preset value hereinafter, carry out test sample to be tested peak height response the step of.If absolutely
Value is greater than preset value and then according to the actual situation retests standard Quality Control sample or reconfigure standard Quality Control sample, alternatively, repeating
Step S110 repeats step S120.
Further, above-mentioned preset value is the 5% of the compound concentration of standard Quality Control sample.
Due to the compound concentration of standard Quality Control sample be it is known, pass through the lithium in cation chromatography instrument testing standard Quality Control sample
The concentration of ion is simultaneously compared with compound concentration, is able to verify that whether above-mentioned functional relation is accurate.An embodiment party wherein
In formula, the compound concentration of standard Quality Control sample is 2.00mg/kg.It is appreciated that in other embodiments, standard Quality Control sample it is dense
Degree can also be formulated as other concentration according to the actual situation.
Further, since cation chromatography instrument is small by external influence factor, sample to be tested is directly from nuclear power plant's primary Ioops
Fetching can be tested, without carrying out plus the pretreatment process such as nitric acid, dilution.Specifically, sample to be tested is in leacheate
Followed by guard column, analytical column, suppressor and electric conductivity detector under drive, and tested by electric conductivity detector.Into one
Step ground, the sample to be tested of test consumption is 6mL~8mL every time.
The concentration of lithium ion in the sample to be tested in certain nuclear power plant's primary Ioops system is 0.20mg/kg~3.50mg/
kg.When standard solution is provided, the maximum concentration of lithium ion of the concentration of the lithium ion in sample to be tested in standard solution and most
Between small concentration, so that the accuracy of measurement sample to be tested is higher.
In practical applications, multiple samples to be tested need to be only well placed in order, is inserted according to the sequencing of sample to be tested
Enter the sample feeding pipe in different channels, and edit the information of sample to be tested on computers, clicks start button starting software and instrument, just
Measurement analysis can be automatically performed.
The measurement method of above-mentioned nuclear power plant's primary Ioops lithium concentration at least has the advantages that
The measurement method of above-mentioned primary Ioops lithium concentration need not carry out complicated pretreatment process, avoid manual operation and bring
Error, so that measurement result be made to have more accuracy.And directly take a certain amount of sample to carry out examination with computer from primary Ioops system,
It is easy to operate, analysis time is short, substantially increase measurement efficiency；
The measurement method of above-mentioned primary Ioops lithium concentration uses cation chromatography, and borate ion belongs to anion, sun
Ion chromatography does not retain anion, therefore the influence of boric acid matrix can not be considered when use cation chromatography survey lithium, and
Cation chromatography instrument is influenced high stability that is smaller, thus testing by outside environmental elements such as temperature, humidity etc.；
In addition, acetylene is frequently used compared with atomic absorption method, and acetylene belongs to high pressure flammable explosive gas, there are security risks
For, acetylene gas is not used using cation chromatography, security risk is smaller；
Entire measurement process is automatically performed by instrument, and post operation personnel (only need to add without contacting chemical reagent
Demineralized water), and instrument analysis is all completed in draught cupboard, advantageously to the health of post personnel.
The following are specific embodiment parts:
Embodiment 1
The measurement method of nuclear power plant's primary Ioops lithium concentration of the present embodiment the following steps are included:
(1) five standard solution containing lithium ion are provided, and the concentration of the lithium ion in five standard solution is respectively
0.50mg/kg, 1.00mg/kg, 2.00mg/kg, 3.00mg/kg and 4.00mg/kg.
(2) peak height response of the standard solution of above-mentioned five various concentrations is tested respectively using cation chromatography instrument, and
Standard working curve is established according to the concentration of the lithium ion of standard solution and corresponding peak height response, and by standard working curve
Linear fit is carried out, obtains the functional relation of the concentration of peak height response and lithium ion, the standard working curve of the present embodiment is such as
Shown in Fig. 2.Wherein, the functional relation of the concentration of peak height response and lithium ion are as follows: y=4.8404x+0.385, coefficient R2
=0.9993.
(3) the standard Quality Control sample that actual concentrations are 2.00mg/kg is prepared, and uses the testing standard Quality Control of cation chromatography instrument
The peak height response of sample, and be 2.01mg/kg according to the test concentrations that lithium ion is calculated in above-mentioned functional relation.
(4) sample one and sample two fetched from certain nuclear power plant's primary Ioops system are tested using cation chromatography instrument respectively
Peak height response, and the functional relation of the concentration according to peak height response and lithium ion, are calculated in sample one and sample two
The concentration of lithium ion be respectively 2.57mg/kg and 2.12mg/kg.
Comparative example 1
Atomic absorption instrument (PE300) is respectively adopted in the sample one fetched in above-described embodiment 1 and sample two to survey
Examination.Sample one and sample two are weighed and recorded according to working procedure first, is then added respectively into sample one and sample two
1mL nitric acid is simultaneously added demineralized water and is diluted to 100mL, and sample is shifted after shaking up and waits for apparatus measures, the measurement of sample one and sample two
It as a result is respectively 2.47mg/kg and 2.06mg/kg.Above-mentioned standard Quality Control sample is tested with atomic absorption instrument simultaneously, obtains standard
The test concentrations of lithium ion in Quality Control sample are 1.98mg/kg.
Above-mentioned comparative example is tested using atomic absorption instrument, and complex steps, testing time are long.
The stability for surveying primary Ioops lithium concentration to cation chromatography below is verified, using the sample one of embodiment 1
Continuous 5 measurements are carried out respectively with sample two and standard Quality Control sample (hereinafter referred to as Quality Control sample), as a result as shown in table 1 below.
1 cation chromatography instrument of table is measured in parallel result (unit: mg/kg)
As it can be seen from table 1 the data stability of continuous five measurements Quality Control sample, sample one and sample two is preferable, five times
The maximum relative standard deviation value (RSD) of measurement result is only 1%.It is possible thereby to illustrate, using cation chromatography measurement one
The stability of circuit lithium concentration is preferable.
In addition, also respectively prepare 2.00mg/kg lithium standard solution add boric acid (boric acid concentration 1000mg/kg) with
Boric acid is not added in the lithium standard solution of 2.00mg/kg, is measured respectively using cation chromatography instrument continuous 9 days, further to test
The stability of cation chromatography test lithium concentration is demonstrate,proved, measurement result is as shown in table 2 below:
Table 2 plus boric acid and the measurement result that boric acid is not added compare (unit: mg/kg)
From table 2 it can be seen that adding boric acid sample and lithium standard solution that boric acid sample is not added lithium standard solution and surveying for continuous 9 days
The stability of amount, measurement result is high, and any two days measured deviation maximums are only 0.02mg/kg.In addition, by the experiment number of table 2
It is not much different according to the measurement result that can also be seen that lithium standard adds boric acid and lithium standard that boric acid is not added, illustrates that the chromatography of ions is surveyed
It is not influenced by boric acid matrix when primary Ioops lithium concentration.
Due to containing boric acid in primary Ioops system, and the presence of boric acid will cause lithium when Atomic Absorption Spectrometry lithium concentration
Therefore the measurement error of concentration studies boric acid matrix to lithium concentration using the chromatography of ions and atomic absorption spectrography (AAS) respectively
The influence of measurement, as a result respectively as shown in the following table 3 and table 4:
The measurement result of lithium concentration when 3 chromatography of ions different matrix of table
The measurement result of lithium concentration when 4 atomic absorption method different matrix of table
Since lithium ion belongs to cation, borate ion belongs to anion, and cation chromatographic column is to anion (borate
Ion) do not retain, theoretically the chromatography of ions, which surveys lithium, can not have to the influence for considering boric acid matrix.From table 3 it can also be seen that
When analyzing lithium using cation chromatography, same prepare liquid is added after boric acid and is not added boric acid, the measurement result difference of Li
Less, illustrate that boric acid matrix has little effect the measurement result of lithium.And as can be seen from Table 4, it is surveyed using atomic absorption method
When lithium concentration, same prepare liquid is added after boric acid and is not added boric acid, and the measurement result difference of Li is larger, and 2000ppm is added
When boric acid matrix, for relative error up to 16.0%, error is larger, illustrates that boric acid matrix is affected to the measurement of lithium concentration.
Since nitric acid can be added when testing using atomic absorption instrument primary Ioops lithium concentration, and use cation chromatography instrument pair
Lithium concentration can be tested directly when testing, without the pretreatment process such as nitric acid are added, therefore, to from certain nuclear power plant's primary Ioops system
The same sample 100mL taken measures and is added without nitric acid after being separately added into 1mL nitric acid and directly measures, measurement result such as the following table 5 institute
Show.It should be noted that in table 5 plus nitric acid sample measurement result is the result directly measured by cation chromatography
By conversion after obtain as a result, specially direct measurement result multiplied by conversion coefficient 1.01 after obtain as a result, and nitre is not added
The measurement result of sour sample is the result directly measured by cation chromatography.
Table 5 plus nitric acid and the measurement result that nitric acid is not added compare (unit: mg/kg)
It can be seen from upper table 5 plus nitric acid is not much different with the measurement result that nitric acid is not added, therefore, using cationic color
Spectrometer test primary Ioops lithium concentration can be not added nitric acid and directly test sample to be tested.
The above experimental result shows the concentration that primary Ioops lithium ion can be measured using cation chromatography instrument, measurement step
It is rapid simple, and the high stability of measurement result.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of measurement method of nuclear power plant's primary Ioops lithium concentration, which comprises the following steps:
Multiple standard solution containing lithium ion are provided, and the concentration of the lithium ion in multiple standard solution is different；
The peak height response for testing multiple standard solution respectively using cation chromatography instrument, according to multiple standard solution
Peak height response and multiple standard solution lithium ion concentration establish peak height response and lithium ion concentration letter
Number relationship；
The peak height response for testing sample to be tested, and according to the functional relation, be calculated lithium in the sample to be tested from
The concentration of son.
2. the measurement method of nuclear power plant's primary Ioops lithium concentration according to claim 1, which is characterized in that described according to multiple
The concentration of the lithium ion of the peak height response of the standard solution and multiple standard solution establish peak height response and lithium from
The step of functional relation of the concentration of son includes: molten according to the peak height response of multiple standard solution and multiple standards
The concentration of the lithium ion of liquid establishes standard working curve, and the standard working curve is carried out linear fit, obtains the letter
Number relationship.
3. the measurement method of nuclear power plant's primary Ioops lithium concentration according to claim 1, which is characterized in that it is described using sun from
It includes: to distinguish multiple standard solution that sub- chromatograph tests the step of peak height response of multiple standard solution respectively
It is tested by the cation chromatography instrument, obtains the chromatogram of multiple standard solution, and obtained by multiple chromatograms
The peak height response of multiple standard solution.
4. the measurement method of nuclear power plant's primary Ioops lithium concentration according to claim 1, which is characterized in that the offer is multiple
The step of standard solution containing lithium ion includes: offer mother liquor, and the mother liquor of different volumes is taken to obtain multiple contain respectively
There is the solution of lithium ion, it is multiple containing lithium ion to obtain that water dilution is separately added into multiple solution containing lithium ion
The standard solution.
5. the measurement method of nuclear power plant's primary Ioops lithium concentration according to claim 1, which is characterized in that establish peak described
After the step of functional relation of high response and the concentration of lithium ion, it is described test sample to be tested peak height response the step of
Further include the steps that verifying the functional relation before.
6. the measurement method of nuclear power plant's primary Ioops lithium concentration according to claim 5, which is characterized in that described to the letter
The step of number relationship is verified includes: to prepare the standard Quality Control sample containing lithium ion, and record in the standard Quality Control sample
The compound concentration of lithium ion；The peak height response that the standard Quality Control sample is tested using the cation chromatography instrument, according to described
The concentration of the lithium ion in the standard Quality Control sample is calculated in functional relation；It will be in the standard Quality Control sample that be calculated
The concentration of lithium ion is compared with the compound concentration, and calculate the concentration of lithium ion in the standard Quality Control sample with it is described
The absolute value of the difference of compound concentration, if the absolute value is in preset value hereinafter, the peak height for carrying out the test sample to be tested is rung
The step of should being worth.
7. the measurement method of nuclear power plant's primary Ioops lithium concentration according to claim 6, which is characterized in that the preset value is
The 5% of the compound concentration of the standard Quality Control sample.
8. the measurement method of nuclear power plant's primary Ioops lithium concentration according to claim 1, which is characterized in that the cation color
The running parameter of spectrometer are as follows: the analytical column of the cation chromatography instrument is Cs16 analytical column, and is equipped with CG16 guard column；The sun
The electric current of the suppressor of ion chromatograph is 20mA；The cation chromatography instrument is eluted using the leacheate of isoconcentration；Institute
Cation chromatography instrument is stated using quantitative loop quantitative manner sample introduction, and single injected sampling amount is 10 μ L.
9. the measurement method of nuclear power plant's primary Ioops lithium concentration according to claim 8, which is characterized in that the leacheate is
Sulfuric acid solution, and the concentration of the leacheate is 10mmol/L~20mmol/L.
10. the measurement method of nuclear power plant's primary Ioops lithium concentration according to claim 1, which is characterized in that described to test sample
The concentration of lithium ion in product is between the maximum concentration and Cmin of the lithium ion in multiple standard solution.
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