CN103472057A - Rapid iodized salt detection liquid - Google Patents
Rapid iodized salt detection liquid Download PDFInfo
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- CN103472057A CN103472057A CN2013104413278A CN201310441327A CN103472057A CN 103472057 A CN103472057 A CN 103472057A CN 2013104413278 A CN2013104413278 A CN 2013104413278A CN 201310441327 A CN201310441327 A CN 201310441327A CN 103472057 A CN103472057 A CN 103472057A
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Abstract
The invention provides rapid iodized salt detection liquid. The rapid iodized salt detection liquid is prepared from the following raw materials: a reducing agent, namely arsenious acid with the concentration of 0.005-0.010g/mL, an indicator, namely amylose with the concentration of 0.002-0.006g/mL, a preservative, namely zinc chloride with the concentration of 0.0005-0.0015g/mL and sodium hydroxide with the concentration of 0.0100-0.0150g/mL; the pH of the detection liquid is 1-1.5. The rapid iodized salt detection liquid provided by the invention is suitable for the detection of iodized salt, the iodine preparation of which is potassium iodate, and iodized salt, the iodine preparation of which is potassium iodide. The rapid iodized salt detection liquid has the advantages that the reducing agent is the arsenious acid, so that the detection speed is relatively rapid; the appropriate pH and the purified amylose are used for preparation, so that the sensitivity and stability of reaction colors are ensured; the zinc chloride is used as the preservative, so that after the rapid iodized salt detection liquid is stored for a long term, the color gradation of the rapid iodized salt detection liquid is still obvious during detection.
Description
Technical field
The present invention relates to a kind of detection liquid, be specifically related to salt compounded of iodine fast detecting liquid, belong to the composition detection field.
Background technology
The in-situ check and test method of the links such as the domestic and international processing to the Potassiumiodate iodic salt, sale is the sxemiquantitative colourimetry, the World Health Organization (WHO), United Nations Children's Fund, internationally control fast detecting medicine box that IDD (Iodine deficiency disorders) council recommends can to survey Cmax be 50 or 100mg/kg, degree of accuracy is ± 10mg/kg.Denomination of invention is iodine content on site rapid quantitative detection reagent in common salt added with iodine and preparation technology, the patent of invention that application number is 200810051460.1 discloses a kind of iodine content on site rapid quantitative detection reagent in common salt added with iodine, and the raw material of this reagent comprises potassium iodide, soluble starch, phosphoric acid, formamide, sodium thiosulfate and ion exchange water.This patent of invention of iodine content on site rapid quantitative detection reagent in common salt added with iodine and preparation technology (being called for short patent of invention A) is compared with the present invention, and patent of invention A is complete quantitatively detection, and the present invention is half-quantitative detection; Patent of invention A is not suitable for Site Detection, carries inconvenience, while detecting because of it, need to be with the in situ quantitation detection case, balance, and sample injector, transfer pipet etc., and operation is also inconvenient.
Summary of the invention.
In order to overcome deficiency of the prior art, the invention provides a kind of salt compounded of iodine fast detecting liquid, preparation technology of the present invention is simple, easy to use, and reaction is fast, and color range is obvious, good stability, long shelf-life.Technical scheme of the present invention is as follows:
A kind of salt compounded of iodine fast detecting liquid comprises following raw material:
The concentration that the concentration of reductive agent arsenious acid is 0.005-0.010g/mL, indicator amylose is that the concentration that 0.002-0.006g/mL, antiseptic chlorination zinc concentration are 0.0005-0.0015g/mL, NaOH is 0.0100-0.0150g/mL, and the pH of described detection liquid is 1-1.5; Preferably, the concentration that the concentration of reductive agent arsenious acid is 0.008g/mL, indicator amylose is that the concentration that 0.004g/mL, antiseptic chlorination zinc concentration are 0.001g/mL, NaOH is 0.0125g/mL, and the pH of described detection liquid is 1.3.
Preferably, adjust the pH of above-mentioned salt compounded of iodine fast detecting liquid with hydrochloric acid.
Preferably, before in above-mentioned salt compounded of iodine fast detecting liquid, each raw material mixes, the mass concentration of reductive agent arsenious acid is 0.8%, the mass concentration of indicator amylose is 0.4%, the mass concentration of antiseptic zinc chloride is 0.1%, the mass concentration of NaOH is 1.25%.
Prepare the method for above-mentioned detection liquid, comprise the following steps:
1, weighing sodium hydroxide 40-60g is dissolved in 2L distilled water, then adds the 30-35g arsenious acid;
2, take the 13-18g amylose, amylose is stirred with 100mL distilled water, then join in the 1900mL distilled water seethed with excitement, boil 10 minutes, adding after cooling hydrochloric acid to adjust pH is 1-1.5, then adds the 8-12g zinc chloride;
3, by two kinds of admixed together getting final product of solution.
Prepare the method for above-mentioned amylose, comprise the following steps:
(1) take the levigate potato of 8-12 gram, add a small amount of absolute ethyl alcohol, then add 300-400 milliliter 0.5mol/L NaOH, add thermal agitation 20-30 minute to make it minute kind, cooling in boiling water bath;
(2) 4000r/min is centrifugal 20 minutes, removes last dispersion;
(3) use in 20mol/L hydrochloric acid and centrifugate, add butanols-isoamylol that the 60-100mL volume ratio is 1:1;
(4) potpourri step (3) obtained heats 5-15 minute in boiling water bath, is cooled to room temperature;
(5) potpourri step (4) obtained in 2-4 ℃ static 24 hours, then 4000r/min is centrifugal 20 minutes, the sediment of acquisition is thick amylose;
(6) thick amylose is moved in the water of the 100-300mL that butanols is saturated;
(7) repeating step (4)-(6) 3-5 time;
(8) sediment obtained by absolute ethanol washing step (7), then, by sediment dry 12-24 hour under 80 ℃, obtain the amylose sterling.
The present invention has the following advantages:
1, applied widely: salt compounded of iodine fast detecting liquid of the present invention is not only applicable to measure the iodizedsalt that idodine is Potassiumiodate, can also detect the iodizedsalt that idodine is potassium iodide;
2, reaction velocity is fast: in salt compounded of iodine fast detecting liquid of the present invention, reductive agent is arsenious acid, makes detection speed of the present invention very fast;
3, color range is obvious: salt compounded of iodine fast detecting liquid of the present invention adopts the amylose preparation of suitable pH and purification, has guaranteed susceptibility and the stability of reaction color;
4, long shelf-life: salt compounded of iodine fast detecting liquid of the present invention adopts zinc chloride as antiseptic, and while making rear detection of the long-term maintenance of the present invention, color range is still obvious.
The accompanying drawing explanation
The design sketch of the detection to different content of iodine that Fig. 1 is salt compounded of iodine fast detecting liquid of the present invention, wherein, A is blank, and B is that content of iodine is 10mg/kg, and C is that content of iodine is 20mg/kg, and D is that content of iodine is 30mg/kg, E is that content of iodine is 40mg/kg;
Fig. 2 is the detection design sketch that storage was 30mg/kg iodine to content after 18 months under different temperatures for salt compounded of iodine fast detecting liquid of the present invention, wherein 1 is blank, 2 is salt compounded of iodine fast detecting liquid of the present invention, A is new preparation salt compounded of iodine fast detecting liquid, B be the present invention in 4 ℃ store 18 months after, C is that B is that the present invention stores after 18 months under normal temperature.
Embodiment
Further describe the present invention below in conjunction with specific embodiment, advantage and disadvantage of the present invention will be more clear along with description.But embodiment is only exemplary, scope of the present invention is not formed to any restriction.It will be understood by those skilled in the art that lower without departing from the spirit and scope of the present invention and can modify or replace details and the form of technical solution of the present invention, but these modifications and replacement all fall within the scope of protection of the present invention.
1 one kinds of salt compounded of iodine fast detecting liquid of embodiment comprise following raw material:
The concentration that the concentration of reductive agent arsenious acid is 0.008g/mL, indicator amylose is that the concentration that 0.004g/mL, antiseptic chlorination zinc concentration are 0.001g/mL, NaOH is 0.0125g/mL, and it is 1.3 that described detection liquid is adjusted pH with hydrochloric acid;
Prepare the method for above-mentioned detection liquid, comprise the following steps:
1 weighing sodium hydroxide 50g is dissolved in 2L distilled water, then adds the 32g arsenious acid;
2 take the 16g amylose, and amylose is stirred with 100mL distilled water, then join in the 1900mL distilled water seethed with excitement, and boil 10 minutes, add 140mL hydrochloric acid after cooling, then add the 10g zinc chloride;
3 by two kinds of admixed together getting final product of solution.
Prepare the method for above-mentioned amylose, comprise the following steps:
(1) take the levigate potato of 10 gram, add a small amount of absolute ethyl alcohol, then add 350 milliliters of 0.5mol/L NaOH, add thermal agitation 20-30 minute to make it minute kind, cooling in boiling water bath;
(2) 4000r/min is centrifugal 20 minutes, removes last dispersion;
(3) use in 20mol/L hydrochloric acid and centrifugate, add butanols-isoamylol that the 80mL volume ratio is 1:1;
(4) potpourri step (3) obtained heats 10 minutes in boiling water bath, is cooled to room temperature;
(5) potpourri step (4) obtained in 2-4 ℃ static 24 hours, then 4000r/min is centrifugal 20 minutes, the sediment of acquisition is thick amylose;
(6) thick amylose is moved in the water of the 200mL that butanols is saturated;
(7) repeating step (4)-(6) is 3 times;
(8) sediment obtained by absolute ethanol washing step (7), then, by sediment dry 12-24 hour under 80 ℃, obtain the amylose sterling.
2 one kinds of salt compounded of iodine fast detecting liquid of embodiment
On the basis of embodiment 1, before in described salt compounded of iodine fast detecting liquid, each raw material mixes, the mass concentration of reductive agent arsenious acid is 0.8%, the mass concentration of indicator amylose is 0.4%, the mass concentration of antiseptic zinc chloride is 0.1%, the mass concentration of NaOH is 1.25%.
Detection to the different content of iodine effect of test example 1 salt compounded of iodine fast detecting of the present invention liquid
The preparation of standard model: add respectively Potassiumiodate in sodium chloride, the mass concentration that makes Potassiumiodate is 10,20,30,40mg/kg.
Take sodium chloride as blank, drip the salt compounded of iodine fast detecting liquid of the embodiment of the present invention 1 preparation, detect effect as shown in Figure 1, result shows, along with the raising of the mass concentration of Potassiumiodate, the color detected is deepened gradually, and can obviously distinguish the sample of different quality concentration.
The test example 2 salt compounded of iodine fast detecting liquid shelf-life of the present invention is detected
Salt compounded of iodine fast detecting liquid of the present invention is divided into to two groups, one group is placed under normal temperature, another group is placed in 4 ℃ of refrigerators, after depositing 18 months, detect its effect of detection to salt compounded of iodine, as shown in Figure 2, result shows testing result, no matter the present invention is placed under normal temperature, or all has the longer shelf-life under low temperature.
Claims (6)
1. a salt compounded of iodine fast detecting liquid, is characterized in that, comprises following raw material:
The concentration that the concentration of reductive agent arsenious acid is 0.005-0.010g/mL, indicator amylose is that the concentration that 0.002-0.006g/mL, antiseptic chlorination zinc concentration are 0.0005-0.0015g/mL, NaOH is 0.0100-0.0150g/mL, and the pH of described detection liquid is 1-1.5.
2. according to the salt compounded of iodine fast detecting liquid shown in claim 1, it is characterized in that, the concentration that the concentration of described reductive agent arsenious acid is 0.008g/mL, described indicator amylose is that the concentration that 0.004g/mL, described antiseptic chlorination zinc concentration are 0.001g/mL, described NaOH is 0.0125g/mL, and the pH of described detection liquid is 1.3.
3. according to the salt compounded of iodine fast detecting liquid shown in claim 1, it is characterized in that, described salt compounded of iodine fast detecting liquid is adjusted pH with hydrochloric acid.
4. according to the salt compounded of iodine fast detecting liquid shown in claim 1, it is characterized in that, before in described salt compounded of iodine fast detecting liquid, each raw material mixes, the mass concentration of reductive agent arsenious acid is 0.8%, the mass concentration of indicator amylose is 0.4%, the mass concentration of antiseptic zinc chloride is 0.1%, the mass concentration of NaOH is 1.25%.
5. prepare the method for the described salt compounded of iodine fast detecting of 1-4 any one liquid, it is characterized in that, comprise the following steps:
(1) weighing sodium hydroxide 40-60g is dissolved in 2L distilled water, then adds the 30-35g arsenious acid;
(2) take the 13-18g amylose, amylose is stirred with 100mL distilled water, then join in the 1900mL distilled water seethed with excitement, boil 10 minutes, adding after cooling hydrochloric acid to adjust pH is 1-1.5, then adds the 8-12g zinc chloride;
(3) by two kinds of admixed together getting final product of solution.
6. prepare the method for amylose claimed in claim 5, comprise the following steps:
(1) take the levigate potato of 8-12 gram, add a small amount of absolute ethyl alcohol, then add 300-400 milliliter 0.5mol/L NaOH, add thermal agitation 20-30 minute to make it minute kind, cooling in boiling water bath;
(2) 4000r/min is centrifugal 20 minutes, removes last dispersion;
(3) use in 20mol/L hydrochloric acid and centrifugate, add butanols-isoamylol that the 60-100mL volume ratio is 1:1;
(4) potpourri step (3) obtained heats 5-15 minute in boiling water bath, is cooled to room temperature;
(5) potpourri step (4) obtained in 2-4 ℃ static 24 hours, then 4000r/min is centrifugal 20 minutes, the sediment of acquisition is thick amylose;
(6) thick amylose is moved in the water of the 100-300mL that butanols is saturated;
(7) repeating step (4)-(6) 3-5 time;
(8) sediment obtained by absolute ethanol washing step (7), then, by sediment dry 12-24 hour under 80 ℃, obtain the amylose sterling.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655456A (en) * | 2019-01-31 | 2019-04-19 | 朱俊 | Utilize the method that exogenous chemical potassium iodide is adulterated in Potassiumiodate detection Iodine |
| CN113109332A (en) * | 2021-04-14 | 2021-07-13 | 山东商业职业技术学院 | Rapid detection reagent and method for potassium iodate in salt |
| CN114441519A (en) * | 2022-01-24 | 2022-05-06 | 四川为众检测科技有限公司 | Reagent for semi-quantitatively and rapidly determining iodine content in iodized salt and preparation method and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655456A (en) * | 2019-01-31 | 2019-04-19 | 朱俊 | Utilize the method that exogenous chemical potassium iodide is adulterated in Potassiumiodate detection Iodine |
| CN113109332A (en) * | 2021-04-14 | 2021-07-13 | 山东商业职业技术学院 | Rapid detection reagent and method for potassium iodate in salt |
| CN114441519A (en) * | 2022-01-24 | 2022-05-06 | 四川为众检测科技有限公司 | Reagent for semi-quantitatively and rapidly determining iodine content in iodized salt and preparation method and application thereof |
| CN114441519B (en) * | 2022-01-24 | 2024-04-02 | 四川为众检测科技有限公司 | Reagent for semi-quantitatively and rapidly determining iodine content in iodized salt, preparation method and application |
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