CN102706868B - Quick salt iodine quantitative detection equipment and detection method - Google Patents
Quick salt iodine quantitative detection equipment and detection method Download PDFInfo
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- CN102706868B CN102706868B CN201210180708.0A CN201210180708A CN102706868B CN 102706868 B CN102706868 B CN 102706868B CN 201210180708 A CN201210180708 A CN 201210180708A CN 102706868 B CN102706868 B CN 102706868B
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Abstract
The invention provides quick salt iodine quantitative detection equipment and method, 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 Quantitative detection device and detection method, be applicable to the fast quantitative analysis of determination of iodine in iodized salt content.
Background technology
Supplementation of iodine salt is the effective way of prevention and control of iodine deficient disease, and Iodine Salt Surveillance is the main work in preventing and controlling.Daily frequent, a large amount of Iodine Salt Surveillances requirement detection method should be accurate simply again.
Yet existing salt compounded of iodine quantitative testing device forms complicated, volume is larger, Portable belt not, and also 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 large sample amount and Site Detection requirements of one's work.
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 a kind of Quantitative detection device and detection method of content of iodine is provided.
For achieving the above object, the technical solution used in the present invention is:
A salt iodine Quantitative detection device, is characterized in that, comprising:
Casing, is rectangle, and in casing one side, is provided with handle, and at least a portion of described handle is straight tube, and one of them lateral vertical of described straight tube and described casing;
And, be accommodated in titration stand in described casing, several bottles of reagent bottles, buret, three pipette with scale, measuring cup, conical flask, platform balance and the concentration tables of comparisons;
Wherein, described 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.
At the bottom of described casing comprises case and case lid, described case lid one side is connected with pivotable at the bottom of case by hinge, is provided with lockset between at the bottom of opposite side and case; On described case lid end face, be provided with described handle.
Also comprise at least one demarcation strip, described demarcation strip by case at the bottom of inner space along being divided into several intervals in length and breadth, in described several intervals, be placed with respectively described platform balance, titration stand, reagent bottle and measuring cup.
Also comprise vertical laminate, which is provided with a plurality of pits, described vertical laminate is arranged in described case lid inner side, is placed with respectively described buret and pipette with scale in described a plurality of pits.
Described Na
2s
2o
3the concentration of solution is 0.005mol/L, described H
2sO
4the concentration of solution is 1mol/L, and the concentration of described KI solution is 0.1g/ml, and the concentration of described starch indicator solution is 0.01g/ml; Described three with being labeled with respectively 1ml, 5ml and 2ml scale mark in the pipette of scale; On described measuring cup, be labeled with 50ml scale mark.
For achieving the above object, the technical solution used in the present invention is:
A salt iodine fast quantitative measurement method for detecting, it uses salt iodine Quantitative detection device as claimed in claim 1, it is characterized in that: described detection method comprises the steps:
(1) all objects in casing are taken out, then casing is uprightly placed, the straight tube of described handle is placed upward;
(2) titration stand is fixed on the straight tube of described handle;
(3) with platform balance, weigh appropriate salt sample;
(4) load weighted salt sample is placed in to conical flask;
(5) adding suitable quantity of water to described conical flask dissolves salt sample completely;
(6) by a pipette with scale, measure appropriate described H
2sO
4solution, is added in described conical flask, shakes up;
By the pipette of another root band scale, measure appropriate described KI solution, be added in described conical flask, shake up, the liquid in described conical flask is by yellowing;
(7) with the described buret with scale, draw a certain amount of Na
2s
2o
3solution, is then fixed on described titration stand;
(8) described in being placed on, described conical flask is fixed on the buret below on titration stand;
(9) by the Na in described buret
2s
2o
3solution is dropwise squeezed in conical flask, and constantly observes the change color situation of the solution in conical flask, until it is faint yellow;
By the 3rd pipette with scale, measure appropriate described starch indicator solution, be added in described conical flask, shake up, now the solution in conical flask is purple;
Continuation is by the Na in described buret
2s
2o
3solution is dropwise squeezed in described conical flask, until that the solution in described conical flask becomes is colourless;
(10) record the volume of residual agent in described buret, and calculate consumed Na
2s
2o
3the consumption of solution;
(11) according to consumed Na
2s
2o
3the volume of solution, in conjunction with the concentration table of comparisons, reads the iodine concentration that contains of salt sample.
Described Na
2s
2o
3the concentration of solution is 0.005mol/L, described H
2sO
4the concentration of solution is 1mol/L, and the concentration of described KI solution is 0.1g/ml, and the concentration of described starch indicator solution is 0.01g/ml; And,
The heavy 10g of salt sample described in step (3);
In step (6), measure H described in 1ml
2sO
4solution is added in described conical flask, measures KI solution described in 5ml and is added to described conical flask;
In step (9), measuring starch indicator solution described in 2ml is added in described conical flask.
Described three with being labeled with respectively 1ml, 5ml and 2ml scale mark in the pipette of scale.
On described measuring cup, be labeled with 50ml scale mark, and in step (5), be to measure 50ml water with described measuring cup, then add in described conical flask.
Compared with prior art, the beneficial effect that the present invention has is: the present invention carries out microminiaturization, intelligentized design by the required instrument and equipment of Iodine in Table Salt assay national standard method, by detecting required instrument and equipment, be assembled in a detection case, become the portable laboratory that salt compounded of iodine in situ quantitation detects, guaranteed the accurate and quick of sample detection, operation is simple, can be applicable to scene or laboratory Quantitative detection.Under detection, be limited to 1mg/kg, error range is ± 1mg/kg, per hourly detects 60 samples, with current methods comparison, reduced testing cost, saved detection time, can go out result in scene, is called portable laboratory.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of salt iodine Quantitative detection device of the present invention;
Fig. 2 is the schematic appearance after salt iodine Quantitative detection device vanning of the present invention;
Fig. 3 is that salt iodine Quantitative detection device of the present invention is uprightly used view.
Embodiment
The present invention is according to the needs of salt compounded of iodine national standard detection method (titrimetry), will test required instrument and equipment intelligent miniature, is assembled into casing, becomes the portable laboratory of can in situ quantitation detecting.
Salt iodine Quantitative detection device provided by the invention, as shown in Figure 1, comprising:
1. casing, is rectangle, and comprises at the bottom of case 11 and case lid 12, and case lid 12 1 sides are connected with 11 pivotables at the bottom of case by hinge 13, are provided with lockset 14 at the bottom of opposite side and case between 11; On case lid 12 end faces, be also provided with handle, at least a portion of described handle is straight tube 15, and one of them lateral vertical of described straight tube 15 and described casing.By the particular design of described handle, not only there is the opening box covers of being convenient to 12 and pick and place instrument and portable function, and described casing close after during with described one of them side upright, described straight tube 15 can be used as titration support and uses.
2. titration stand 20, and it can be plugged in described straight tube 15 when described casing is upright.
3. several bottles of reagent bottles 21, are wherein equipped with the reagent of variable concentrations;
In an embodiment, described several bottles of reagent bottles 21 comprise:
One bottle of Na that concentration is 0.005mol/L
2s
2o
3solution, described Na
2s
2o
3solution can be by weighing sodium thiosulfate (Na
2s
2o
35H
2o) 1.24g, dissolves and is diluted in 1L volumetric flask with distilled water and obtain;
The H of one bottle of 1mol/L
2sO
4solution, it can be by lentamente the 5.56ml concentrated sulphuric acid being added in about 90ml distilled water, then be diluted to 100ml and obtain;
The KI solution of one bottle of 0.1g/ml, it can be by being dissolved in 25g potassium iodide in 250ml distilled water and obtaining;
And the starch indicator solution of one bottle of 0.01g/ml, can be by measuring 100ml water, in beaker, be heated to boiling, then add 1g soluble starch, be stirred to completely and dissolve, then add 1g sodium chloride and stir, obtain after cooling.
4. with the buret 221 of scale, by the design of scale and rubber imbibition head, can once measure the accurate volume of required reagent.
5. three pipette 222 with scale; In the present embodiment, described three pipette 222 with scale are labeled with respectively 1ml, 5ml, 2ml scale mark, are respectively used to draw described H
2sO
4solution, KI solution and starch indicator solution.
6. measuring cup 23; In the present embodiment, it is labeled with 50ml scale mark.
7. conical flask 24, for holding salt sample
8. platform balance 25, for weighing salt sample.
9. the concentration table of comparisons (figure slightly), finds the iodine concentration in salt fast according to the volume of consumed reagent.
10. demarcation strip 26, and described platform balance 25, titration stand 20, reagent bottle 21 and measuring cup 23 etc., along being divided in length and breadth several intervals, are placed to for separating in 11 inner spaces at the bottom of case.
11. vertical laminates 27, are arranged in described case lid 12 inner sides, which is provided with a plurality of pits 271, for placing the described buret 221 with scale and pipette 222.
Principle of work of the present invention is: under sour environment, the sodium iodate in salt compounded of iodine reacts with potassium iodide, and the iodine of separating out is made indicator with starch, adopts sodium thiosulfate solution titrated to record its content of iodine.Reaction equation is as follows:
IO
3 -+5I
-+6H
+→3I
2+3H
2O
2Na
2S
2O
3+I
2→2NaI+2Na
2S
4O
6
When the present invention uses, its operation steps is as follows:
1, all objects in casing are taken out, then lock described lockset 14, casing is uprightly placed, the straight tube 15 of described handle is placed upward;
2, titration stand 20 is fixed on the straight tube 15 of described handle;
3, with platform balance 25, weigh the salt sample of appropriate (as 10g);
4, load weighted salt sample is placed in to conical flask 24;
5, with measuring cup 23, measure (as 50 milliliters) water in right amount, add conical flask 24 that salt sample is dissolved completely in water;
6, by a pipette 222 with scale, measure H described in 1ml
2sO
4solution, is added in conical flask 24, shakes up;
By the pipette 222 of another root band scale, measure KI solution described in 5ml, be added in conical flask 24, shake up, the liquid in conical flask 24 is by yellowing;
7, with the described buret 221 with scale, draw a certain amount of Na
2s
2o
3solution, is then fixed on titration stand 20;
8, described in being placed on, described conical flask 24 is fixed on buret 221 belows on titration stand 20;
9, by the Na in described buret 221
2s
2o
3solution is dropwise squeezed in conical flask 24, and constantly observes the change color situation of the solution in conical flask 24, until it is faint yellow (or claiming pale asphyxia);
By the 3rd pipette 222 with scale, measure starch indicator solution described in 2ml, be added in described conical flask 24, shake up, now the solution in conical flask 24 is purple;
Continuation is by the Na in described buret 221
2s
2o
3solution is dropwise squeezed in described conical flask 24, until that the solution in described conical flask 24 becomes is colourless; Now, the iodine in salt sample is by complete titration;
In said process, if a pipe Na
2s
2o
3solution is finished, and the iodine in salt sample, still not by complete titration, measures a pipe Na again
2s
2o
3solution;
10, record the volume of residual agent in described buret 221, and calculate consumed Na
2s
2o
3the consumption of solution;
11, according to consumed Na
2s
2o
3the volume of solution, in conjunction with the concentration table of comparisons, reads the iodine concentration that contains of salt sample.
By adopting the present invention, it can adapt to the needs of salt compounded of iodine scene or laboratory Quantitative detection, and be limited to 1mg/kg under lowest detection, error range is ± 1mg/kg, per hourly detect 60 samples, with existing GB detection method comparison, because of accurately setting in advance of titration reagent concentration etc., reduced testing cost, saved detection time, scene goes out 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, in the situation that do not depart from the spirit and scope that claim limits; can make many modifications, variation or equivalence, but within all will falling into protection scope of the present invention.
Claims (8)
1. a salt iodine Quantitative detection device, is characterized in that, comprising:
Casing, is rectangle, and in casing one side, is provided with handle, at least a portion of described handle is straight tube, and one of them lateral vertical of described straight tube and described casing, described casing close after during with described one of them side upright, described straight tube can be used as titration support;
And, be accommodated in titration stand in described casing, several bottles of reagent bottles, buret, three pipette with scale, measuring cup, conical flask, platform balance and the concentration tables of comparisons; Described three with being labeled with respectively 1ml, 5ml and 2ml scale mark in the pipette of scale; On described measuring cup, be labeled with 50ml scale mark;
Wherein, described 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, described Na
2s
2o
3the concentration of solution is 0.005mol/L, described H
2sO
4the concentration of solution is 1mol/L, and the concentration of described KI solution is 0.1g/ml, and the concentration of described starch indicator solution is 0.01g/ml.
2. salt iodine Quantitative detection device according to claim 1, is characterized in that: at the bottom of described casing comprises case and case lid, described case lid one side is connected with pivotable at the bottom of case by hinge, is provided with lockset between at the bottom of opposite side and case; On described case lid end face, be provided with described handle.
3. salt iodine Quantitative detection device according to claim 2, it is characterized in that: also comprise at least one demarcation strip, described demarcation strip by case at the bottom of inner space along being divided into several intervals in length and breadth, in described several intervals, be placed with respectively described platform balance, titration stand, reagent bottle and measuring cup.
4. salt iodine Quantitative detection device according to claim 3, it is characterized in that: also comprise vertical laminate, which is provided with a plurality of pits, described vertical laminate is arranged in described case lid inner side, is placed with respectively described buret and pipette with scale in described a plurality of pits.
5. a salt iodine fast quantitative measurement method for detecting, it uses salt iodine Quantitative detection device as claimed in claim 1, it is characterized in that: described detection method comprises the steps:
(1) all objects in casing are taken out, then casing is uprightly placed, the straight tube of described handle is placed upward;
(2) titration stand is fixed on the straight tube of described handle;
(3) with platform balance, weigh appropriate salt sample;
(4) load weighted salt sample is placed in to conical flask;
(5) adding suitable quantity of water to described conical flask dissolves salt sample completely;
(6) by a pipette with scale, measure appropriate described H
2sO
4solution, is added in described conical flask, shakes up;
By the pipette of another root band scale, measure appropriate described KI solution, be added in described conical flask, shake up, the liquid in described conical flask is by yellowing;
(7) with the described buret with scale, draw a certain amount of Na
2s
2o
3solution, is then fixed on described titration stand;
(8) described in being placed on, described conical flask is fixed on the buret below on titration stand;
(9) by the Na in described buret
2s
2o
3solution is dropwise squeezed in conical flask, and constantly observes the situation of change of solution colour in conical flask, until it is faint yellow;
By the 3rd pipette with scale, measure appropriate described starch indicator solution, be added in described conical flask, shake up, now the solution in conical flask is purple;
Continuation is by the Na in described buret
2s
2o
3solution is dropwise squeezed in described conical flask, until that the solution in described conical flask becomes is colourless;
(10) record the volume of residual agent in described buret, and calculate consumed Na
2s
2o
3the consumption of solution;
(11) according to consumed Na
2s
2o
3the volume of solution, in conjunction with the concentration table of comparisons, reads the iodine concentration that contains of salt sample.
6. salt iodine fast quantitative measurement method for detecting according to claim 5, is characterized in that: described Na
2s
2o
3the concentration of solution is 0.005mol/L, described H
2sO
4the concentration of solution is 1mol/L, and the concentration of described KI solution is 0.1g/ml, and the concentration of described starch indicator solution is 0.01g/ml; And,
The heavy 10g of salt sample described in step (3);
In step (6), measure H described in 1ml
2sO
4solution is added in described conical flask, measures KI solution described in 5ml and is added to described conical flask;
In step (9), measuring starch indicator solution described in 2ml is added in described conical flask.
7. salt iodine fast quantitative measurement method for detecting according to claim 6, is characterized in that: described three with being labeled with respectively 1ml, 5ml and 2ml scale mark in the pipette of scale.
8. salt iodine fast quantitative measurement method for detecting according to claim 6, is characterized in that: on described measuring cup, be labeled with 50ml scale mark, and in step (5), be to measure 50ml water with described measuring cup, then add in described 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 |
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| Publication Number | Publication Date |
|---|---|
| CN102706868A CN102706868A (en) | 2012-10-03 |
| CN102706868B true CN102706868B (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210180708.0A Active CN102706868B (en) | 2012-06-04 | 2012-06-04 | Quick salt iodine quantitative detection equipment and detection method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2258616Y (en) * | 1995-07-24 | 1997-07-30 | 湖南大学 | Simple iodine-investgating box |
| CN1177105A (en) * | 1996-10-10 | 1998-03-25 | 张质毅 | Box for on-side sampling and analysing for monitoring iodine salt in batches for quality assurance |
| CN2313226Y (en) * | 1997-05-29 | 1999-04-07 | 叶承正 | Quick iodine-detecting device |
| CN101413894A (en) * | 2008-11-24 | 2009-04-22 | 张质毅 | Iodine content on site rapid quantitative detection reagent in common salt added with iodine and preparation process thereof |
| CN101900667A (en) * | 2009-05-30 | 2010-12-01 | 万文炳 | Fiber spectrum iodine analyzer |
| US8210387B2 (en) * | 2009-10-09 | 2012-07-03 | The Stanley Works Israel Ltd. | Organizer |
| CN201993317U (en) * | 2011-03-01 | 2011-09-28 | 姜美婷 | Multichannel synchronous quick detecting box |
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2012
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