CN105301177A - Alga delicious taste liquid iodine content examination method - Google Patents
Alga delicious taste liquid iodine content examination method Download PDFInfo
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- CN105301177A CN105301177A CN201510801331.XA CN201510801331A CN105301177A CN 105301177 A CN105301177 A CN 105301177A CN 201510801331 A CN201510801331 A CN 201510801331A CN 105301177 A CN105301177 A CN 105301177A
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Abstract
The invention belongs to a kind of seaweed delicate flavour liquid content of iodine method of inspection,It is characterized by: taking following steps: a. reagent and its preparation: 1. 5% sodium carbonate liquor,2. 1mol/L carbon acid solution,3. oxalic acid,Phosphoric acid mixed liquor,4. 3% oxygen acid sodium solution containing effective oxygen,5. 0.1% methyl orange solution,6. 50g/L liquor kalii iodide,7. 5g/L starch solution,8. sodium thiosulfate standard titration solution; B. prepared by sample; C. determination of the content of iodine; D. the calculating of seaweed delicate flavour liquid content of iodine: by examination
It calculates. The invention is accurate to the inspection result precision of seaweed fresh monosodium glutamate content of iodine, ensure that product quality.
Description
Technical field
The invention belongs to the detection method of flavouring quality, particularly a kind of marine alga delicate flavour liquid content of iodine method of inspection.
Background technology
Marine alga delicate flavour liquid is used to cook flavouring, and containing the iodine that human body needs, similar this flavouring, has SC/T3010 method to measure to the assay method of its composition at present, and titration method has GB/T130257 method to measure.Said method is large to the accuracy of detection gap of marine alga delicate flavour liquid content of iodine, and the result measured is inaccurate.So existing this method of testing cannot be adopted.Production out after, be protect product quality, must carry out the mensuration of amount of iodine, underproof product must not dispatch from the factory.
Summary of the invention
The object of the invention is to overcome above-mentioned technical deficiency, there is provided a kind of in acid medium, iodide ion is oxidized to iodate by sodium hypochlorite, oxalic acid removes unnecessary sodium hypochlorite, iodate ion oxidation potassium iodide separates out iodine, by the marine alga delicate flavour liquid content of iodine method of inspection of sodium thiosulfate standard titration solution.
The technical scheme that technical solution problem of the present invention adopts is: a kind of marine alga delicate flavour liquid content of iodine method of inspection, is characterized in that: take following steps:
A. reagent and preparation thereof:
5% sodium carbonate liquor: take 5g sodium carbonate with analytical balance 1, adds 100mL water, shakes up;
1mol/L carbon acid solution: measure 17mL85% phosphoric acid and be diluted with water to 250mL;
oxalic acid, phosphoric acid mixed liquor: take 15g oxalic acid with analytical balance 1, add the phosphoric acid of 34mLp=85, be diluted with water to 500mL.
containing available oxygen 3% oxygen acid sodium solution: the sodium hypochlorite reagent solution measuring 10mL effective chlorine 10% with measuring cup, adds 30mL water, shake up, and is stored in brown bottle;
0.1% methyl orange solution: take 0.1g methyl orange powder with analytical balance 1 and add in 100mL water and dissolve;
50g/L liquor kalii iodide: take 25g potassium iodide with analytical balance 1, is diluted to 500mL by water-soluble solution, is stored in orange bottle; Matching while using;
5g/L starch solution: take 0.5g starch with analytical balance 1 and put into 100mL beaker, add 4-5 and drip, furnishing pasty state, pours 100mL100 degree boiling water into, boils 0.5min again after stirring, cooling, matching while using;
sodium thiosulfate standard titration solution:
1) Potassiumiodate standard is molten: accurately take 1.427g with analytical balance 1 and put into high temperature Muffle furnace 4, after temperature controls to be dried to the Potassiumiodate standard reagent of constant weight at 110 DEG C ± 2 DEG C, be placed in 150mL beaker, be dissolved in water, move in 1000mL volumetric flask, to scale in thin up to bottle, shake up, by this solution accurate dilutions 20 times, obtain concentration 1/6K10
3c=2.000 × 10
-3mol/L Potassiumiodate standard solution;
2) sodium thiosulfate standard titration solution (C(Na
2s
2o
3)=0.1mol/L): take 25g sodium thiosulfate (Na with analytical balance 1
2s
2o
35H
2o) and 1.0g NaOH, the distilled water boiling cooling with 1L dissolves, and stores in brown reagent bottle; Get supernatant liquor 50mL and be diluted with water to 2500mL, be stored in brown bottle for subsequent use;
3) sodium thiosulfate standard titration solution is demarcated: getting the 10.00mL concentration prepared is 2.000 × 10
-3mol/L Potassiumiodate standard solution, in 250mL iodine flask, adds 50mL water, the 2mL phosphoric acid solution prepared, 5mL liquor kalii iodide; Use sodium thiosulfate standard titration solution immediately; When to be titrated to solution be light yellow, add the starch solution that 5mL has prepared, continue titration sodium thiosulfate standard titration solution to blue just disappear, record sodium thiosulfate standard titration solution consumption volume V;
The concentration of sodium thiosulfate volumetric soiutions calculates by formula (1):
.................（1）
In formula:
C
1-sodium thiosulfate standard titration solution concentration, unit is mole often liter (mol/L);
C
0-Potassiumiodate concentration of standard solution, unit is mole often liter (mol/L);
10.00-drawing Potassiumiodate standard solution volume, unit is milliliter (mL);
The consumption of V-thiosulfuric acid standard titration solution, unit is milliliter (mL);
B. sample preparation:
Take marine alga delicate flavour liquid 5g with analytical balance 1, be accurate to 0.0001g, be placed in 50mL porcelain crucible 2, add 5% sodium carbonate liquor 5mL ~ 10mL, on electric furnace 3, charing is to smokeless, then adds a cover and puts into 550 DEG C ~ 600 DEG C high temperature Muffle furnace 4 calcination 40min, cooling; In porcelain crucible 2, add the grinding of 20-30mL water stir, solution and residue are all proceeded in 250mL beaker, porcelain crucible 2 20-30mL water is repeatedly poured in beaker, in beaker, solution total amount is 150mL, boil 5min, above-mentioned solution and residue are filtered in 250mL bottle with funnel and filter paper while hot; Residue hot water in beaker and funnel repeatedly rinses, and lets cool rear constant volume V
2;
C. determination of the content of iodine:
marine alga delicate flavour liquid sample: accurately pipette appropriate V
3or all test solution is placed in 250mL iodine flask, add 0.1% methyl orange solution 2 ~ 3, with the oxalic acid that 5mL ~ 10mL prepares, phosphoric acid mixed liquor is adjusted to redness, add 1.0mL sodium hypochlorite molten, 5-10mL water washing bottle wall, be placed on and electric furnace 3 be heated to solution and just seethed with excitement and take off immediately, water-bath is cooled to less than 30 DEG C, add the 5mL liquor kalii iodide prepared, immediately with when preparing sodium thiosulfate standard titration solution to be titrated to solution be light yellow, add the 5mL starch solution prepared, till continuing to be titrated to blue disappearance just, the sodium thiosulfate standard solution volume V that record consumes
4,
blank test: replace filtrate with 50mL water, add 0.1% methyl orange solution 2 ~ 3, add 2mL oxalic acid, the modulation of phosphoric acid mixed liquor is red, add 1.0mL liquor natrii hypochloritis, with water washing bottle wall, be placed on and electric furnace 3 be heated to solution and just seethed with excitement and take off immediately, water-bath is cooled to less than 30 DEG C, add the 5mL liquor kalii iodide prepared, immediately with when preparing sodium thiosulfate standard titration solution to be titrated to solution be light yellow, add the 5mL starch solution prepared, till continuing to be titrated to blue disappearance just, the sodium thiosulfate standard solution volume V that record consumes
4, the volume V of the sodium thiosulfate standard titration solution that record consumes
0,
D. the calculating of marine alga delicate flavour liquid content of iodine: calculate by examination (2):
.................（2）
In formula:
X
2--the content of iodine in-test solution, unit is milligrams per kilogram (mg/kg);
C
1-sodium thiosulfate standard titration solution concentration, unit is mole often liter (mol/L);
V
4-titration sample liquid consumes the volume of thiosulfuric acid standard solution, and unit is milliliter (mL);
V
0-reagent blank consumes the volume of thiosulfuric acid standard solution, and unit is milliliter (mL);
V
2the cumulative volume of-sample liquid constant volume, unit is milliliter (mL);
V
3-pipetting the volume of filtrate, unit is milliliter (mL);
21.15-with 1.00mL sodium thiosulfate standard titration solution (c(Na
2s
2o
3)=0.1mol/L) quality of suitable iodine, unit is milligram (mg);
1000-Units conversion factor;
M
2take the quality of sample, unit is gram (g);
Repeating the arithmetic mean of twice measure and calculation result by above condition, remain to one decimal place, is namely the amount of iodine X of marine alga delicate flavour liquid
2--;
Precision: the marine alga delicate flavour liquid amount of iodine X that said method calculates
2--10%.
The water told: the tertiary effluent specified for GB/T6682.
The invention has the beneficial effects as follows: this invention is accurate to the assay precision of marine alga delicate flavour liquid amount of iodine, ensure that the quality of product.
Accompanying drawing explanation
Illustrate with embodiment below in conjunction with accompanying drawing.
Fig. 1 is the FB(flow block) of marine alga delicate flavour liquid content of iodine method of inspection device therefor.
In figure: 1-analytical balance; 2-porcelain crucible; 3-electric furnace; 4-high temperature Muffle furnace.
Embodiment
Embodiment, with reference to accompanying drawing, a kind of marine alga delicate flavour liquid content of iodine method of inspection, is characterized in that: take following steps:
A. reagent and preparation thereof:
5% sodium carbonate liquor: take 5g sodium carbonate with analytical balance 1, adds 100mL water, shakes up;
1mol/L carbon acid solution: measure 17mL85% phosphoric acid and be diluted with water to 250mL;
oxalic acid, phosphoric acid mixed liquor: take 15g oxalic acid with analytical balance 1, add the phosphoric acid of 34mLp=85, be diluted with water to 500mL.
containing available oxygen 3% oxygen acid sodium solution: the sodium hypochlorite reagent solution measuring 10mL effective chlorine 10% with measuring cup, adds 30mL water, shake up, and is stored in brown bottle;
0.1% methyl orange solution: take 0.1g methyl orange powder with analytical balance 1 and add in 100mL water and dissolve;
50g/L liquor kalii iodide: take 25g potassium iodide with analytical balance 1, is diluted to 500mL by water-soluble solution, is stored in orange bottle; Matching while using;
5g/L starch solution: take 0.5g starch with analytical balance 1 and put into 100mL beaker, add 4-5 and drip, furnishing pasty state, pours 100mL100 degree boiling water into, boils 0.5min again after stirring, cooling, matching while using;
sodium thiosulfate standard titration solution:
1) Potassiumiodate standard is molten: accurately take 1.427g with analytical balance 1 and put into high temperature Muffle furnace 4, after temperature controls to be dried to the Potassiumiodate standard reagent of constant weight at 110 DEG C ± 2 DEG C, be placed in 150mL beaker, be dissolved in water, move in 1000mL volumetric flask, thin up pours in bottle 1 that (volumetric flask only has a scale to scale into, be exactly the specification scale of 1000ml), shake up, by this solution accurate dilutions 20 times, obtain concentration 1/6K10
3c=2.000 × 10
-3mol/L Potassiumiodate standard solution;
2) sodium thiosulfate standard titration solution (C(Na
2s
2o
3)=0.1mol/L): take 25g sodium thiosulfate (Na with analytical balance 1
2s
2o
35H
2o) and 1.0g NaOH, the distilled water boiling cooling with 1L dissolves, and stores in brown reagent bottle; Get supernatant liquor 50mL and be diluted with water to 2500mL, be stored in brown bottle for subsequent use;
3) sodium thiosulfate standard titration solution is demarcated: getting the 10.00mL concentration prepared is 2.000 × 10
-3mol/L Potassiumiodate standard solution, in 250mL iodine flask, adds 50mL water, the 2mL phosphoric acid solution prepared, 5mL liquor kalii iodide; Use sodium thiosulfate standard titration solution immediately; When to be titrated to solution be light yellow, add the starch solution that 5mL has prepared, continue titration sodium thiosulfate standard titration solution to blue just disappear, record sodium thiosulfate standard titration solution consumption volume V;
The concentration of sodium thiosulfate volumetric soiutions calculates by (1):
.................（1）
In formula:
C
1-sodium thiosulfate standard titration solution concentration, unit is mole often liter (mol/L);
C
0-Potassiumiodate concentration of standard solution, unit is mole often liter (mol/L);
10.00-drawing Potassiumiodate standard solution volume, unit is milliliter (mL);
V-thiosulfuric acid standard titration solution consumption, unit is milliliter (mL);
B. sample preparation:
Take marine alga delicate flavour liquid 5g with analytical balance 1, be accurate to 0.0001g, be placed in 50mL porcelain crucible 2, add 5% sodium carbonate liquor 5mL ~ 10mL, on electric furnace 3, charing is to smokeless, then adds a cover and puts into 550 DEG C ~ 600 DEG C high temperature Muffle furnace 4 calcination 40min.Cooling; In porcelain crucible 2, add the grinding of 20-30mL water stir, solution and residue are all proceeded in 250mL beaker, porcelain crucible 2 20-30mL water is repeatedly poured in beaker, in beaker, solution total amount is 150mL, boil 5min, above-mentioned solution and residue are filtered in 250mL bottle with funnel and filter paper while hot; Residue hot water in beaker and funnel repeatedly rinses, and lets cool rear constant volume V
2;
C. determination of the content of iodine:
marine alga delicate flavour liquid sample: standard pipettes appropriate V
3or all test solution is placed in 250mL iodine flask, add 0.1% methyl orange solution 2 ~ 3, with the oxalic acid that 5mL ~ 10mL prepares, the modulation of phosphoric acid mixed liquor is red, add 1.0mL sodium hypochlorite molten, 5-10mL water washing bottle wall, be placed on and electric furnace 3 be heated to solution and just seethed with excitement and take off immediately, water-bath is cooled to less than 30 DEG C, add the 5mL liquor kalii iodide prepared, immediately with when preparing sodium thiosulfate standard titration solution to be titrated to solution be light yellow, add the 5mL starch solution prepared, till continuing to be titrated to blue disappearance just, the sodium thiosulfate standard solution volume V that record consumes
4,
empty experiment: replace filtrate with 50mL water, add 0.1% methyl orange solution 2 ~ 3, add 2mL oxalic acid, the modulation of phosphoric acid mixed liquor is green, add 1.0mL liquor natrii hypochloritis, with water washing bottle wall, be placed on and electric furnace 3 be heated to solution XX boiling and take off immediately, water-bath is cooled to less than 30 DEG C, add the 5mL liquor kalii iodide prepared, immediately with when preparing sodium thiosulfate standard titration solution to be titrated to solution be light yellow, add the 5mL starch solution prepared, till continuing to be titrated to blue disappearance just, the sodium thiosulfate standard solution volume V that record consumes
4the volume V of the sodium thiosulfate standard titration solution that record consumes
0,
D. the calculating of marine alga delicate flavour liquid content of iodine: calculate by examination (2):
.................（2）
In formula:
X
2--the content of iodine in-test solution, unit is milligrams per kilogram (mg/kg);
C
1-sodium thiosulfate standard titration solution concentration, unit is mole often liter (mol/L);
V
4-titration sample liquid consumes the volume of thiosulfuric acid standard solution, and unit is milliliter (mL);
V
0-reagent blank consumes the volume of thiosulfuric acid standard solution, and unit is milliliter (mL);
V
2the cumulative volume of-sample liquid constant volume, unit is milliliter (mL);
V
3-pipetting the volume of filtrate, unit is milliliter (mL);
21.15-with 1.00mL sodium thiosulfate standard titration solution (c(Na
2s
2o
3)=0.1mol/L) quality of suitable iodine, unit is milligram (mg);
1000-Units conversion factor;
M
2take the quality of sample, unit is gram (g);
Repeat the arithmetic mean of twice measure and calculation result by above condition, remain to one decimal place, xx is the amount of iodine X of marine alga delicate flavour liquid
2--;
Precision: the marine alga delicate flavour liquid amount of iodine X that said method calculates
2--10%.
The water told: the tertiary effluent specified for GB/T6682.
The invention has the beneficial effects as follows: this invention is accurate to the assay precision of marine alga delicate flavour liquid amount of iodine, ensure that the quality of product.
Device therefor: analytical balance sensibility reciprocal is 0.1mg; Porcelain crucible 2 is 50mL; Electric furnace 3 temperature-control range is room temperature ~ 450 DEG C; High temperature Muffle furnace 4 temperature >=600 DEG C.
Claims (2)
1. a marine alga delicate flavour liquid content of iodine method of inspection, is characterized in that: take following steps:
Reagent and preparation thereof:
5% sodium carbonate liquor: take 5g sodium carbonate with analytical balance 1, adds 100mL water, shakes up;
1mol/L carbon acid solution: measure 17mL85% phosphoric acid and be diluted with water to 250mL;
oxalic acid, phosphoric acid mixed liquor: take 15g oxalic acid with analytical balance 1, add the phosphoric acid of 34mLp=85, be diluted with water to 500mL;
containing available oxygen 3% oxygen acid sodium solution: the sodium hypochlorite reagent solution measuring 10mL effective chlorine 10% with measuring cup, adds 30mL water, shake up, and is stored in brown bottle;
0.1% methyl orange solution: take 0.1g methyl orange powder with analytical balance 1 and add in 100mL water and dissolve;
50g/L liquor kalii iodide: take 25g potassium iodide with analytical balance 1, is diluted to 500mL by water-soluble solution, is stored in orange bottle; Matching while using;
5g/L starch solution: take 0.5g starch with analytical balance 1 and put into 100mL beaker, add 4-5 and drip, furnishing pasty state, pours 100mL100 degree boiling water into, boils 0.5min again after stirring, cooling, matching while using;
sodium thiosulfate standard titration solution:
1) Potassiumiodate standard is molten: accurately take 1.427g with analytical balance 1 and put into high temperature Muffle furnace 4, after temperature controls to be dried to the Potassiumiodate standard reagent of constant weight at 110 DEG C ± 2 DEG C, be placed in 150mL beaker, be dissolved in water, move in 1000mL volumetric flask, thin up, to bottle to scale, shakes up, by this solution accurate dilutions 20 times, obtain concentration 1/6K10
3c=2.000 × 10
-3mol/L Potassiumiodate standard solution;
2) sodium thiosulfate standard titration solution (C(Na
2s
2o
3)=0.1mol/L): take 25g sodium thiosulfate (Na with analytical balance 1
2s
2o
35H
2o) and 1.0g NaOH, the distilled water boiling cooling with 1L dissolves, and stores in brown reagent bottle; Get supernatant liquor 50mL and be diluted with water to 2500mL, be stored in brown bottle for subsequent use;
3) sodium thiosulfate standard titration solution is demarcated: getting the 10.00mL concentration prepared is 2.000 × 10
-3mol/L Potassiumiodate standard solution, in 250mL iodine flask, adds 50mL water, the 2mL phosphoric acid solution prepared, 5mL liquor kalii iodide; Use sodium thiosulfate standard titration solution immediately; When to be titrated to solution be light yellow, add the starch solution that 5mL has prepared, continue titration sodium thiosulfate standard titration solution to blue just disappear, record sodium thiosulfate standard titration solution consumption volume V;
The concentration of sodium thiosulfate volumetric soiutions calculates by formula (1):
.................（1）
In formula:
C
1-sodium thiosulfate standard titration solution concentration, unit is mole often liter (mol/L);
C
0-Potassiumiodate concentration of standard solution, unit is mole often liter (mol/L);
10.00-drawing Potassiumiodate standard solution volume, unit is milliliter (mL);
The consumption of V-thiosulfuric acid standard titration solution, unit is milliliter (mL);
B. sample preparation:
Take marine alga delicate flavour liquid 5g with analytical balance 1, be accurate to 0.0001g, be placed in 50mL porcelain crucible 2, add 5% sodium carbonate liquor 5mL ~ 10mL, on electric furnace 3, charing is to smokeless, then adds a cover and puts into 550 DEG C ~ 600 DEG C high temperature Muffle furnace 4 calcination 40min, cooling; In porcelain crucible 2, add the grinding of 20-30mL water stir, solution and residue are all proceeded in 250mL beaker, porcelain crucible 2 20-30mL water is repeatedly poured in beaker, in beaker, solution total amount is 150mL, boil 5min, above-mentioned solution and residue are filtered in 250mL bottle with funnel and filter paper while hot; Residue hot water in beaker and funnel repeatedly rinses, and lets cool rear constant volume V
2;
C. determination of the content of iodine:
marine alga delicate flavour liquid sample: accurately pipette appropriate V
3or all test solution is placed in 250mL iodine flask, add 0.1% methyl orange solution 2 ~ 3, with the oxalic acid that 5mL ~ 10mL prepares, phosphoric acid mixed liquor is adjusted to redness, add 1.0mL sodium hypochlorite molten, 5-10mL water washing bottle wall, be placed on and electric furnace 3 be heated to solution and just seethed with excitement and take off immediately, water-bath is cooled to less than 30 DEG C, add the 5mL liquor kalii iodide prepared, immediately with when preparing sodium thiosulfate standard titration solution to be titrated to solution be light yellow, add the 5mL starch solution prepared, till continuing to be titrated to blue disappearance just, the sodium thiosulfate standard solution volume V that record consumes
4,
blank test: replace filtrate with 50mL water, add 0.1% methyl orange solution 2 ~ 3, add 2mL oxalic acid, the modulation of phosphoric acid mixed liquor is red, add 1.0mL liquor natrii hypochloritis, with water washing bottle wall, be placed on and electric furnace 3 be heated to solution and just seethed with excitement and take off immediately, water-bath is cooled to less than 30 DEG C, add the 5mL liquor kalii iodide prepared, immediately with when preparing sodium thiosulfate standard titration solution to be titrated to solution be light yellow, add the 5mL starch solution prepared, till continuing to be titrated to blue disappearance just, the sodium thiosulfate standard solution volume V that record consumes
4, the volume V of the sodium thiosulfate standard titration solution that record consumes
0,
D. the calculating of marine alga delicate flavour liquid content of iodine: calculate by examination (2):
.................（2）
In formula:
X
2--the content of iodine in-test solution, unit is milligrams per kilogram (mg/kg);
C
1-sodium thiosulfate standard titration solution concentration, unit is mole often liter (mol/L);
V
4-titration sample liquid consumes the volume of thiosulfuric acid standard solution, and unit is milliliter (mL);
V
0-reagent blank consumes the volume of thiosulfuric acid standard solution, and unit is milliliter (mL);
V
2the cumulative volume of-sample liquid constant volume, unit is milliliter (mL);
V
3-pipetting the volume of filtrate, unit is milliliter (mL);
21.15-with 1.00mL sodium thiosulfate standard titration solution (c(Na
2s
2o
3)=0.1mol/L) quality of suitable iodine, unit is milligram (mg);
1000-Units conversion factor;
M
2take the quality of sample, unit is gram (g);
Repeating the arithmetic mean of twice measure and calculation result by above condition, remain to one decimal place, is namely the amount of iodine X of marine alga delicate flavour liquid
2--;
Precision: the marine alga delicate flavour liquid amount of iodine X that said method calculates
2--10%.
2. the method for inspection of marine alga delicate flavour liquid content of iodine according to claim 1, is characterized in that: the water told is the tertiary effluent that GB/T6682 specifies.
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|---|---|---|---|
| CN201510801331.XA CN105301177A (en) | 2015-11-19 | 2015-11-19 | Alga delicious taste liquid iodine content examination method |
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| CN201510801331.XA CN105301177A (en) | 2015-11-19 | 2015-11-19 | Alga delicious taste liquid iodine content examination method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645961A (en) * | 2018-08-09 | 2018-10-12 | 漳州傲农牧业科技有限公司 | A kind of method of content of iodine in measurement feedstuff |
| CN109444059A (en) * | 2018-10-19 | 2019-03-08 | 贵州瓮福蓝天氟化工股份有限公司 | The measuring method of iodide ion in a kind of ammonium fluoride or ammonium acid fluoride |
| CN110044891A (en) * | 2019-05-13 | 2019-07-23 | 山东省食品药品检验研究院 | A kind of detection method of amino acid iodine content of iodine |
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| US5137690A (en) * | 1989-10-27 | 1992-08-11 | Rhone-Poulenc Sante | Process and apparatus for the determination of the iodine content of drinking water |
| CN1179910A (en) * | 1996-10-14 | 1998-04-29 | 王 | Stable additive iodized salt and its producing method |
| 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 |
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2015
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| US5137690A (en) * | 1989-10-27 | 1992-08-11 | Rhone-Poulenc Sante | Process and apparatus for the determination of the iodine content of drinking water |
| CN1179910A (en) * | 1996-10-14 | 1998-04-29 | 王 | Stable additive iodized salt and its producing method |
| 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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645961A (en) * | 2018-08-09 | 2018-10-12 | 漳州傲农牧业科技有限公司 | A kind of method of content of iodine in measurement feedstuff |
| CN108645961B (en) * | 2018-08-09 | 2021-05-11 | 漳州傲农牧业科技有限公司 | Method for measuring iodine content in feed raw materials |
| CN109444059A (en) * | 2018-10-19 | 2019-03-08 | 贵州瓮福蓝天氟化工股份有限公司 | The measuring method of iodide ion in a kind of ammonium fluoride or ammonium acid fluoride |
| CN110044891A (en) * | 2019-05-13 | 2019-07-23 | 山东省食品药品检验研究院 | A kind of detection method of amino acid iodine content of iodine |
| CN110044891B (en) * | 2019-05-13 | 2022-02-08 | 山东省食品药品检验研究院 | Method for detecting iodine content in amino acid iodized salt |
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