CN102706868A - Quick salt iodine quantitative detection equipment - Google Patents
Quick salt iodine quantitative detection equipment Download PDFInfo
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- CN102706868A CN102706868A CN2012101807080A CN201210180708A CN102706868A CN 102706868 A CN102706868 A CN 102706868A CN 2012101807080 A CN2012101807080 A CN 2012101807080A CN 201210180708 A CN201210180708 A CN 201210180708A CN 102706868 A CN102706868 A CN 102706868A
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- conical flask
- salt
- concentration
- detection
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- 150000003839 salts Chemical class 0.000 title claims abstract description 51
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000011630 iodine Substances 0.000 title claims abstract description 42
- 229910052740 iodine Inorganic materials 0.000 title claims abstract description 42
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000004448 titration Methods 0.000 claims abstract description 21
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 16
- 238000011002 quantification Methods 0.000 claims description 17
- 229920002472 Starch Polymers 0.000 claims description 15
- 235000019698 starch Nutrition 0.000 claims description 15
- 239000008107 starch Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000000691 measurement method Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000004383 yellowing Methods 0.000 claims description 3
- GQWNECFJGBQMBO-UHFFFAOYSA-N Molindone hydrochloride Chemical compound Cl.O=C1C=2C(CC)=C(C)NC=2CCC1CN1CCOCC1 GQWNECFJGBQMBO-UHFFFAOYSA-N 0.000 claims description 2
- 239000011521 glass Substances 0.000 abstract 1
- 239000011734 sodium Substances 0.000 description 18
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Substances [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- DKNPRRRKHAEUMW-UHFFFAOYSA-N Iodine aqueous Chemical compound [K+].I[I-]I DKNPRRRKHAEUMW-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NALMPLUMOWIVJC-UHFFFAOYSA-N n,n,4-trimethylbenzeneamine oxide Chemical compound CC1=CC=C([N+](C)(C)[O-])C=C1 NALMPLUMOWIVJC-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000011697 sodium iodate Substances 0.000 description 1
- 235000015281 sodium iodate Nutrition 0.000 description 1
- 229940032753 sodium iodate Drugs 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention provides quick salt iodine quantitative detection equipment, which comprises a cuboid box body, as well as a titration frame, a plurality of reagent bottles, a burette, a plurality of pipettes with scales, measuring glass, an conical flask, a platform balance and a concentration comparison table which are accommodated in the box body, wherein a handle is arranged on one side of the box body, at least a part of the handle is a straight tube perpendicular to one of the lateral sides of the box body; and the plurality of reagent bottles are filled with reagents having different concentrations. According to the invention, the detection equipment enables small-sized and intelligent instruments and equipment required by detection to be accommodated in the box body, ensures accurate and quick detection to a sample, is simply and easy to operate, and can be applicable to quick field or laboratorial quantitative detection. The lower limit of the detection equipment is 1 mg/kg, the error range is plus or minus 1 mg/kg, and 60 samples can be detected in one hour. Compared with the prior art, the detection equipment lowers the detection cost, saves detection time, and can obtain a detection result in field, thereby being called a portable laboratory.
Description
Technical field
The present invention relates to a kind of salt iodine fast quantification pick-up unit, be applicable to the fast quantitative analysis of determination of iodine in iodized salt content.
Background technology
Salt adds the effective way that iodine is prevention and control of iodine deficient disease, and the salt compounded of iodine monitoring is the main work in the preventing and controlling.The monitoring of daily frequent, a large amount of salt compounded of iodine requires the detection method should be accurate simply again.
Yet existing salt compounded of iodine detection by quantitative device is formed complicated, and volume is bigger, and inconvenience is carried, and existing salt compounded of iodine quantitative detecting method is more loaded down with trivial details, detects sample length consuming time, and speed is slow, can not adapt to the needs of large sample amount and on-the-spot testing.
Summary of the invention
It is loaded down with trivial details that the present invention has overcome existing determination of iodine in iodized salt content quantitative detection method, detects the slow shortcoming of sample speed, and the fast quantification pick-up unit of content of iodine in a kind of salt is provided.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of salt iodine fast quantification pick-up unit is characterized in that, comprising:
Casing is rectangle, and is provided with handle in casing one side, and at least a portion of said handle is a straight tube, and one of them lateral vertical of said straight tube and said casing;
And, be accommodated in pipette, measuring cup, conical flask, platform balance and the concentration tables of comparisons of titration stand in the said casing, several bottles of reagent bottles, buret, three band scales;
Wherein, said several bottles of reagent bottles comprise: one bottle of Na
2S
2O
3Solution, one bottle of H
2SO
4Solution, one bottle of KI solution, and one bottle of starch indicator solution.
Said casing comprises at the bottom of the case and case lid, and said case lid one side is connected with pivot at the bottom of the case through hinge, is provided with lockset between at the bottom of opposite side and the case; On said case lid end face, be provided with said handle.
Also comprise at least one demarcation strip, said demarcation strip with case at the bottom of the inner space along being divided into several intervals in length and breadth, be placed with said platform balance, titration stand, reagent bottle and measuring cup respectively in said several intervals.
Also comprise vertical laminate, which is provided with a plurality of pits, it is inboard that described vertical laminate is arranged in said case lid, is placed with said buret and the pipette of being with scale in said a plurality of pits respectively.
Said Na
2S
2O
3The concentration of solution is 0.005mol/L, said H
2SO
4The concentration of solution is 1mol/L, and the concentration of said KI solution is 0.1g/ml, and the concentration of said starch indicator solution is 0.01g/ml; Indicate respectively on the pipette of said three band scales 1ml, 5ml and 2ml scale mark are arranged; Indicate on the said measuring cup 50ml scale mark is arranged.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of salt iodine fast quantitative measurement method for detecting, it uses salt iodine fast quantification pick-up unit as claimed in claim 1, and it is characterized in that: said detection method comprises the steps:
(1) all objects in the casing is taken out, then casing is uprightly placed, the straight tube of said handle is placed up;
(2) titration stand is fixed on the straight tube of said handle;
(3) with an amount of salt appearance of platform balance weighing;
(4) load weighted salt appearance is placed conical flask;
(5) with suitable quantity of water to said conical flask salt appearance is dissolved fully;
(6) measure an amount of said H with the pipette of a band scale
2SO
4Solution is added in the said conical flask, shakes up;
Pipette with another root band scale is measured an amount of said KI solution, is added in the said conical flask, shakes up, and the liquid in the said conical flask is with yellowing;
(7) draw a certain amount of Na with the buret of said band scale
2S
2O
3Solution is fixed on the said titration stand then;
(8) said conical flask is placed on the said buret below that is fixed on the titration stand;
(9) with the Na in the said buret
2S
2O
3Solution dropwise is squeezed in the conical flask, and constantly observes the change color situation of the solution in the conical flask, is faint yellow until it;
Pipette with the 3rd band scale is measured an amount of said starch indicator solution, is added in the said conical flask, shakes up, and the solution in the conical flask is purple at this moment;
Continuation is with the Na in the said buret
2S
2O
3Solution dropwise is squeezed in the said conical flask, and the solution in said conical flask becomes colourless;
(10) volume of residual agent in the said buret of record, and calculate the Na that consumes
2S
2O
3The consumption of solution;
(11) according to consumption Na
2S
2O
3The volume of solution in conjunction with the concentration table of comparisons, reads the iodine concentration that contains of salt appearance.
Said Na
2S
2O
3The concentration of solution is 0.005mol/L, said H
2SO
4The concentration of solution is 1mol/L, and the concentration of said KI solution is 0.1g/ml, and the concentration of said starch indicator solution is 0.01g/ml; And,
The heavy 10g of salt appearance described in the step (3);
In the step (6), measure the said H of 1ml
2SO
4Solution is added in the said conical flask, measures the said KI solution of 5ml and is added to said conical flask;
Measuring the said starch indicator solution of 2ml in the step (9) is added in the said conical flask.
Indicate respectively on the pipette of said three band scales 1ml, 5ml and 2ml scale mark are arranged.
Indicating on the said measuring cup has the 50ml scale mark, and in step (5), is to measure 50ml water with said measuring cup, adds to then in the said conical flask.
Compared with prior art; The beneficial effect that the present invention has is: the present invention measures the required instrument and equipment of national standard method with content of iodine in the salt and carries out microminiaturization, intelligentized design; Be assembled in the detection case detecting required instrument and equipment, become the portable laboratory that the salt compounded of iodine in situ quantitation detects, guaranteed the accurate and quick of sample detection; Operation is simple, can be fit to scene or laboratory fast quantification and detect.Detect down and be limited to 1mg/kg, error range is ± 1mg/kg, per hour can detect 60 samples, with the current methods comparison, reduced the detection cost, saved detection time, can go out the result in the scene, is called portable laboratory.
Description of drawings
Fig. 1 is the composition synoptic diagram of salt iodine fast quantification pick-up unit of the present invention;
Fig. 2 is the schematic appearance after the salt iodine fast quantification pick-up unit vanning of the present invention;
Fig. 3 is the upright user mode synoptic diagram of salt iodine fast quantification pick-up unit of the present invention.
Embodiment
The present invention is the needs according to salt compounded of iodine national standard detection method (titrimetry), will test required instrument and equipment intelligent miniatureization, is assembled into casing, but becomes the portable laboratory that in situ quantitation detects.
Salt iodine fast quantification pick-up unit provided by the invention, as shown in Figure 1, comprising:
1. casing is rectangle, comprise at the bottom of the case 11 with case lid 12, case lid 12 1 sides are connected with 11 pivots at the bottom of the case through hinge 13, are provided with lockset 14 at the bottom of opposite side and the case between 11; On case lid 12 end faces, also be provided with handle, at least a portion of said handle is a straight tube 15, and one of them lateral vertical of said straight tube 15 and said casing.Through the particular design of said handle, not only have and be convenient to open case lid 12 and pick and place instrument and portable function, and said casing to be when cutting out the back with said one of them side upright, said straight tube 15 can be used as the titration support and uses.
2. titration stand 20, and it can be plugged in the said straight tube 15 when said casing is upright.
3. several bottles of reagent bottles 21 wherein are equipped with the reagent of variable concentrations;
In an embodiment, said several bottles of reagent bottles 21 comprise:
One bottle of concentration is the Na of 0.005mol/L
2S
2O
3Solution, said Na
2S
2O
3Solution can be through weighing sodium thiosulfate (Na
2S
2O
35H
2O) 1.24g is with dissolved in distilled water and be diluted in the 1L volumetric flask and obtain;
The H of one bottle of 1mol/L
2SO
4Solution, it can be diluted to 100ml and obtain through lentamente the 5.56ml concentrated sulphuric acid being added in about 90ml distilled water again;
The KI solution of one bottle of 0.1g/ml, it can obtain through the 25g potassium iodide is dissolved in the 250ml distilled water;
And the starch indicator solution of one bottle of 0.01g/ml, can in beaker, be heated to boiling through measuring 100ml water, add the 1g soluble starch then, be stirred to dissolving fully, add 1g sodium chloride and stirring again, obtain after the cooling.
4. the buret 221 of band scale through the design of scale and rubber imbibition head, can once be measured the accurate volume of required reagent.
Three the band scales pipette 222; In the present embodiment, the pipette 222 of said three band scales indicates respectively has 1ml, 5ml, 2ml scale mark, is respectively applied for and draws said H
2SO
4Solution, KI solution and starch indicator solution.
6. measuring cup 23; In the present embodiment, its sign has the 50ml scale mark.
7. conical flask 24, are used to hold the salt sample
8. platform balance 25, are used for weighing salt appearance.
9. the concentration table of comparisons (figure slightly) is found the iodine concentration in the salt fast according to the volume of consumption reagent.
10. demarcation strip 26, and 11 inner spaces at the bottom of the case along being divided into several intervals in length and breadth, being used for separating and placing said platform balance 25, titration stand 20, reagent bottle 21 and measuring cup 23 etc.
11. vertical laminate 27 is arranged in said case lid 12 inboards, which is provided with a plurality of pits 271, is used to place the buret 221 and pipette 222 of said band scale.
Principle of work of the present invention is: under sour environment, and sodium iodate in the salt compounded of iodine and potassium iodide reaction, the iodine of separating out is made indicator with starch, adopts sodium thiosulfate solution titrated to record its content of iodine.Reaction equation is following:
IO
3 -+5I
-+6H
+→3I
2+3H
2O
2Na
2S
2O
3+I
2→2NaI+2Na
2S
4O
6
When the present invention used, its operation steps was following:
1, all objects in the casing is taken out, lock said lockset 14 then, casing is uprightly placed, the straight tube 15 of said handle is placed up;
2, titration stand 20 is fixed on the straight tube 15 of said handle;
3, with the salt appearance of platform balance 25 weighings an amount of (like 10g);
4, load weighted salt appearance is placed conical flask 24;
5, measure (as 50 milliliters) water in right amount with measuring cup 23, water is added conical flask 24 salt appearance is dissolved fully;
6, measure the said H of 1ml with the pipette 222 of a band scale
2SO
4Solution is added in the conical flask 24, shakes up;
Pipette 222 with another root band scale is measured the said KI solution of 5ml, is added in the conical flask 24, shakes up, and the liquid in the conical flask 24 is with yellowing;
7, draw a certain amount of Na with the buret 221 of said band scale
2S
2O
3Solution is fixed on the titration stand 20 then;
8, said conical flask 24 is placed on said buret 221 belows that are fixed on the titration stand 20;
9, with the Na in the said buret 221
2S
2O
3Solution dropwise is squeezed in the conical flask 24, and constantly observes the change color situation of the solution in the conical flask 24, is faint yellow (or claiming pale asphyxia) until it;
Pipette 222 with the 3rd band scale is measured the said starch indicator solution of 2ml, is added in the said conical flask 24, shakes up, and the solution in the conical flask 24 is purple at this moment;
Continuation is with the Na in the said buret 221
2S
2O
3Solution dropwise is squeezed in the said conical flask 24, and the solution in said conical flask 24 becomes colourless; At this moment, the iodine in the salt appearance is by complete titration;
In the said process, if a pipe Na
2S
2O
3Solution uses up, and the iodine in the salt appearance is then measured a pipe Na more still not by complete titration
2S
2O
3Solution;
10, the volume of residual agent in the said buret 221 of record, and calculate the Na that consumes
2S
2O
3The consumption of solution;
11, according to consumption Na
2S
2O
3The volume of solution in conjunction with the concentration table of comparisons, reads the iodine concentration that contains of salt appearance.
Through adopting the present invention, it can adapt to the needs of salt compounded of iodine scene or the detection of laboratory fast quantification, and is limited to 1mg/kg under the lowest detection; Error range is ± 1mg/kg per hour can detect 60 samples, with existing GB detection method comparison; Because of accurately setting in advance of titration reagent concentration or the like, reduced the detection cost, saved detection time; The scene goes out the result, can be described as portable laboratory.
More than explanation is just illustrative for the purpose of the present invention; And nonrestrictive, those of ordinary skills understand, under the situation of spirit that does not break away from claim and limited and scope; Can make many modifications, variation or equivalence, but all will fall within protection scope of the present invention.
Claims (9)
1. a salt iodine fast quantification pick-up unit is characterized in that, comprising:
Casing is rectangle, and is provided with handle in casing one side, and at least a portion of said handle is a straight tube, and one of them lateral vertical of said straight tube and said casing;
And, be accommodated in pipette, measuring cup, conical flask, platform balance and the concentration tables of comparisons of titration stand in the said casing, several bottles of reagent bottles, buret, three band scales;
Wherein, said several bottles of reagent bottles comprise: one bottle of Na
2S
2O
3Solution, one bottle of H
2SO
4Solution, one bottle of KI solution, and one bottle of starch indicator solution.
2. salt iodine fast quantification pick-up unit according to claim 1, it is characterized in that: said casing comprises at the bottom of the case and case lid, said case lid one side is connected with pivot at the bottom of the case through hinge, is provided with lockset between at the bottom of opposite side and the case; On said case lid end face, be provided with said handle.
3. salt iodine fast quantification pick-up unit according to claim 2; It is characterized in that: also comprise at least one demarcation strip; Said demarcation strip with case at the bottom of the inner space along being divided into several intervals in length and breadth, be placed with said platform balance, titration stand, reagent bottle and measuring cup respectively in said several intervals.
4. salt iodine fast quantification pick-up unit according to claim 3; It is characterized in that: also comprise vertical laminate; Which is provided with a plurality of pits, it is inboard that described vertical laminate is arranged in said case lid, is placed with said buret and the pipette of being with scale in said a plurality of pits respectively.
5. salt iodine fast quantification pick-up unit according to claim 3 is characterized in that: said Na
2S
2O
3The concentration of solution is 0.005mol/L, said H
2SO
4The concentration of solution is 1mol/L, and the concentration of said KI solution is 0.1g/ml, and the concentration of said starch indicator solution is 0.01g/ml; Indicate respectively on the pipette of said three band scales 1ml, 5ml and 2ml scale mark are arranged; Indicate on the said measuring cup 50ml scale mark is arranged.
6. salt iodine fast quantitative measurement method for detecting, it uses salt iodine fast quantification pick-up unit as claimed in claim 1, and it is characterized in that: said detection method comprises the steps:
(1) all objects in the casing is taken out, then casing is uprightly placed, the straight tube of said handle is placed up;
(2) titration stand is fixed on the straight tube of said handle;
(3) with an amount of salt appearance of platform balance weighing;
(4) load weighted salt appearance is placed conical flask;
(5) with suitable quantity of water to said conical flask salt appearance is dissolved fully;
(6) measure an amount of said H with the pipette of a band scale
2SO
4Solution is added in the said conical flask, shakes up;
Pipette with another root band scale is measured an amount of said KI solution, is added in the said conical flask, shakes up, and the liquid in the said conical flask is with yellowing;
(7) draw a certain amount of Na with the buret of said band scale
2S
2O
3Solution is fixed on the said titration stand then;
(8) said conical flask is placed on the said buret below that is fixed on the titration stand;
(9) with the Na in the said buret
2S
2O
3Solution dropwise is squeezed in the conical flask, and constantly observes the situation of change of solution colour in the conical flask, is faint yellow until it;
Pipette with the 3rd band scale is measured an amount of said starch indicator solution, is added in the said conical flask, shakes up, and the solution in the conical flask is purple at this moment;
Continuation is with the Na in the said buret
2S
2O
3Solution dropwise is squeezed in the said conical flask, and the solution in said conical flask becomes colourless;
(10) volume of residual agent in the said buret of record, and calculate the Na that consumes
2S
2O
3The consumption of solution;
(11) according to consumption Na
2S
2O
3The volume of solution in conjunction with the concentration table of comparisons, reads the iodine concentration that contains of salt appearance.
7. salt iodine fast quantitative measurement method for detecting according to claim 6 is characterized in that: said Na
2S
2O
3The concentration of solution is 0.005mol/L, said H
2SO
4The concentration of solution is 1mol/L, and the concentration of said KI solution is 0.1g/ml, and the concentration of said starch indicator solution is 0.01g/ml; And,
The heavy 10g of salt appearance described in the step (3);
In the step (6), measure the said H of 1ml
2SO
4Solution is added in the said conical flask, measures the said KI solution of 5ml and is added to said conical flask;
Measuring the said starch indicator solution of 2ml in the step (9) is added in the said conical flask.
8. salt iodine fast quantitative measurement method for detecting according to claim 7 is characterized in that: indicating respectively on the pipette of said three band scales has 1ml, 5ml and 2ml scale mark.
9. salt iodine fast quantitative measurement method for detecting according to claim 7 is characterized in that: indicating on the said measuring cup has the 50ml scale mark, and in step (5), is to measure 50ml water with said measuring cup, adds to then in the said conical flask.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180708.0A CN102706868B (en) | 2012-06-04 | 2012-06-04 | Quick salt iodine quantitative detection equipment and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180708.0A CN102706868B (en) | 2012-06-04 | 2012-06-04 | Quick salt iodine quantitative detection equipment and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102706868A true CN102706868A (en) | 2012-10-03 |
| CN102706868B CN102706868B (en) | 2014-04-09 |
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ID=46899809
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|---|---|---|---|
| CN201210180708.0A Expired - Fee Related CN102706868B (en) | 2012-06-04 | 2012-06-04 | Quick salt iodine quantitative detection equipment and detection method |
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|---|---|
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|---|---|---|---|---|
| CN103048318A (en) * | 2012-12-20 | 2013-04-17 | 哈尔滨医科大学 | Rapid quantitative detection method for determining iodine content in well and rock salt |
| CN106324113A (en) * | 2015-06-30 | 2017-01-11 | 深圳翰宇药业股份有限公司 | Reagent, kit, application and detection method |
| CN108490112A (en) * | 2018-03-20 | 2018-09-04 | 青海盐湖工业股份有限公司 | The assay method of basic magnesium chloride in a kind of water-free magnesium chloride granule |
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| CN103048318B (en) * | 2012-12-20 | 2015-08-26 | 哈尔滨医科大学 | Content of iodine fast quantitative measurement method for detecting in well mine salt |
| CN106324113A (en) * | 2015-06-30 | 2017-01-11 | 深圳翰宇药业股份有限公司 | Reagent, kit, application and detection method |
| CN108490112A (en) * | 2018-03-20 | 2018-09-04 | 青海盐湖工业股份有限公司 | The assay method of basic magnesium chloride in a kind of water-free magnesium chloride granule |
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