CN106770273A - The method of chloride ion content in silver chlorate Nephelometric Determination brown iron oxide - Google Patents
The method of chloride ion content in silver chlorate Nephelometric Determination brown iron oxide Download PDFInfo
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- CN106770273A CN106770273A CN201611244946.8A CN201611244946A CN106770273A CN 106770273 A CN106770273 A CN 106770273A CN 201611244946 A CN201611244946 A CN 201611244946A CN 106770273 A CN106770273 A CN 106770273A
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Abstract
The invention discloses a kind of method of chloride ion content in silver chlorate Nephelometric Determination brown iron oxide, including：Weigh brown iron oxide sample to be placed in beaker, be dissolved in water sample, filter, filtrate is connected in volumetric flask, is diluted with water to scale, is shaken up；Two parts of solution are taken in brown volumetric flask, adds nitric acid, ethylene glycol, a copy of it to add silver nitrate solution, scale is diluted to water, shake up；It is reference liquid to be not added with silver nitrate test solution, with suitable cuvette, turbidity value is measured in wavelength 440nm, the content of chlorion is obtained from working curve.The present invention can provide accurate data for the content of chlorion in brown iron oxide.
Description
Technical field
The present invention relates to a kind of material analysis techniques, specifically, it is related in a kind of silver chlorate Nephelometric Determination brown iron oxide
The method of chloride ion content.
Background technology
Brown iron oxide is a kind of important magnetic material, and the content of wherein di-iron trioxide composition is higher, and impurity is fewer, oxygen
The quality for changing iron powder is higher, and in these impurity, chloride is one of emphasis detection project, therefore Accurate Determining brown iron oxide
The content of middle chlorion, the quality for improving brown iron oxide has great importance.
The method for lacking chlorion in a kind of accurate measurement brown iron oxide in the prior art.
The content of the invention
Technical problem solved by the invention is to provide chloride ion content in a kind of silver chlorate Nephelometric Determination brown iron oxide
Method, accurate data can be provided for the content of chlorion in brown iron oxide.
Technical scheme is as follows：
A kind of method of chloride ion content in silver chlorate Nephelometric Determination brown iron oxide, including：
Weigh brown iron oxide sample to be placed in beaker, be dissolved in water sample, filter, filtrate is connected in volumetric flask, dilute with water
Release to scale, shake up；
Two parts of solution are taken in brown volumetric flask, nitric acid, ethylene glycol is added, a copy of it adds silver nitrate solution, dilute with water
Release to scale, shake up；
It is reference liquid to be not added with silver nitrate test solution, with suitable cuvette, turbidity value is measured in wavelength 440nm, from work
The content of chlorion is obtained on curve.
Further：
2.000g samples are weighed to be placed in 300mL beakers, plus 30mL water, dissolution in low temperature sample, three layers of quantitative filter paper filtering,
Filtrate is connected in 100mL volumetric flasks, is diluted with water to scale, is shaken up；
Two parts of 5.00mL solution are taken in 25mL brown volumetric flasks, plus 2mL nitric acid, 10mL ethylene glycol, a copy of it adds 2mL
Concentration 10g/L silver nitrate solutiones, scale is diluted to water, is shaken up；
30min is placed in dark place, is reference liquid to be not added with silver nitrate test solution, with suitable cuvette, in wavelength 440nm measurements
Turbidity value, obtains the content of chlorion from working curve.
Further：The drafting of working curve, in 25mL brown volumetric flasks, take 0 respectively, 0.50,1.00,2.00,3.00,
4.00th, 5.00mL chlorions standard liquid, plus 2mL nitric acid, plus 10mL ethylene glycol, 2mL silver nitrate solutiones are diluted to quarter with water
Degree, shakes up, and is reference solution with not chloride ion-containing standard liquid by aforesaid operations, with the turbidity value that measures to corresponding in solution
Amount of chloride ions drawing curve.
Further：The content of chlorionM in formula1- from working curve
The Cl amounts for checking in；M- sample sizes；V- test solution cumulative volumes；V1- point take test solution volume.
Compared with prior art, the technology of the present invention effect includes：
The present invention can provide accurate data for the content of chlorion in brown iron oxide, be a kind of simple, effective, fast
Speed, practical method.Measurement result stabilization of the present invention, accurate, method are easy to grasp, it is adaptable to which chloride ion content exists in production
Measure between 0.03%-0.5%.
Specific embodiment
Technical solution of the present invention is elaborated below with reference to example embodiment.However, example embodiment can
Implement in a variety of forms, and be not understood as limited to implementation method set forth herein；Conversely, thesing embodiments are provided so that
The design of example embodiment more comprehensively and completely, and is comprehensively conveyed to those skilled in the art by the present invention.
Under the protection of ethylene glycol, chlorion generates silver chlorate white precipitate with silver nitrate, measures molten at 440nm wavelength
Liquid turbidity value.
The method of chloride ion content, comprises the following steps in silver chlorate Nephelometric Determination brown iron oxide：
Step 1：Weigh brown iron oxide sample to be placed in beaker, be dissolved in water sample, filter, filtrate is connected in volumetric flask,
Scale is diluted with water to, is shaken up；
2.000g samples are weighed to be placed in 300mL beakers, plus 30mL water, dissolution in low temperature sample, filtering (three layers of quantitative filter
Paper), filtrate is connected in 100mL volumetric flasks, is diluted with water to scale, is shaken up.
Step 2：Two parts of solution are taken in brown volumetric flask, add nitric acid, ethylene glycol, a copy of it to add silver nitrate solution,
Scale is diluted to water, is shaken up；
Two parts of 5.00mL solution are taken in 25mL brown volumetric flasks, plus 2mL nitric acid (1+1), 10mL ethylene glycol, a copy of it
Plus 2mL silver nitrate solutiones (10g/L), another is not added with 2mL silver nitrate solutiones (10g/L), scale is diluted to water, shakes up.
Step 3：It is reference liquid to be not added with silver nitrate test solution, with suitable cuvette, turbidity value is measured in wavelength 440nm,
The content of chlorion is obtained from working curve.
30min is placed in dark place, is reference liquid to be not added with silver nitrate test solution, with suitable cuvette, in wavelength 440nm measurements
Turbidity value, obtains the content of chlorion from working curve.
Step 31：The drafting of working curve.
In 25mL brown volumetric flasks, chlorion standard liquid 0 is taken respectively, 0.50,1.00,2.00,3.00,4.00,
5.00mL (chlorion standard liquid 0.1mg/mL:0.1648 gram of dry sodium chloride is weighed in 1000mL volumetric flasks, with water-soluble
Xie Hou, is diluted to scale, shakes up), plus 2mL nitric acid (1+1), plus 10mL ethylene glycol, 2mL silver nitrate solutiones (10g/L) are dilute with water
Release to scale, shake up, be reference solution with not chloride ion-containing standard liquid by aforesaid operations, with the turbidity value that measures to solution
In corresponding amount of chloride ions drawing curve.
Step 32：Calculate the content of chlorion.
The content of chlorion
In formula:m1- Cl the amounts checked in from working curve, mg；M- sample sizes, g；V- test solution cumulative volumes, mL；V1- point take
Test solution volume, mL.
The tolerance of table 1
The chloride ion content of sample is 0.03~0.5% in actual production, because without standard sample thus carried out mark-on reclaims
Experiment, measurement result and the rate of recovery are shown in Table.
The chlorion recovery testu of table 2
Tested more than, select optimum determining wavelength, invented using chlorion in Nephelometric Determination brown iron oxide
Content.
Term used herein is explanation and exemplary and nonrestrictive term.Because the present invention can be with various
Form specific implementation without deviating from invention it is spiritual or substantive, it should therefore be appreciated that above-described embodiment be not limited to it is any foregoing
Details, and widely being explained in the spirit and scope that should be limited in appended claims, thus fall into claim or its etc.
Whole changes and remodeling in the range of effect all should be appended claims and covered.
Claims (4)
1. in a kind of silver chlorate Nephelometric Determination brown iron oxide chloride ion content method, including：
Weigh brown iron oxide sample to be placed in beaker, be dissolved in water sample, filter, filtrate is connected in volumetric flask, is diluted with water to
Scale, shakes up；
Two parts of solution are taken in brown volumetric flask, adds nitric acid, ethylene glycol, a copy of it to add silver nitrate solution, be diluted to water
Scale, shakes up；
It is reference liquid to be not added with silver nitrate test solution, with suitable cuvette, turbidity value is measured in wavelength 440nm, from working curve
On obtain the content of chlorion.
2. in silver chlorate Nephelometric Determination brown iron oxide as claimed in claim 1 chloride ion content method, it is characterised in that：
2.000g samples are weighed to be placed in 300mL beakers, plus 30mL water, dissolution in low temperature sample, three layers of quantitative filter paper filtering, filtrate
It is connected in 100mL volumetric flasks, is diluted with water to scale, shakes up；
Two parts of 5.00mL solution are taken in 25mL brown volumetric flasks, plus 2mL nitric acid, 10mL ethylene glycol, a copy of it adds 2mL concentration
10g/L silver nitrate solutiones, scale is diluted to water, is shaken up；
30min is placed in dark place, is reference liquid to be not added with silver nitrate test solution, with suitable cuvette, turbidity is measured in wavelength 440nm
Value, obtains the content of chlorion from working curve.
3. in silver chlorate Nephelometric Determination brown iron oxide as claimed in claim 1 chloride ion content method, it is characterised in that：Work
Make the drafting of curve, in 25mL brown volumetric flasks, take 0 respectively, 0.50,1.00,2.00,3.00,4.00,5.00mL chlorions
Standard liquid, plus 2mL nitric acid, plus 10mL ethylene glycol, 2mL silver nitrate solutiones are diluted to scale with water, shake up, by aforesaid operations,
It is reference solution with not chloride ion-containing standard liquid, it is bent to corresponding amount of chloride ions drawing in solution with the turbidity value for measuring
Line.
4. in silver chlorate Nephelometric Determination brown iron oxide as claimed in claim 1 chloride ion content method, it is characterised in that：Chlorine
The content of ionM in formula1- Cl the amounts checked in from working curve；M- is tried
Sample amount；V- test solution cumulative volumes；V1- point take test solution volume.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543818A (en) * | 2017-08-31 | 2018-01-05 | 九江德福电子材料有限公司 | Trace chlorine detection method in a kind of copper sulfate electrolyte |
| CN110726719A (en) * | 2019-10-17 | 2020-01-24 | 广西贺州市桂东电子科技有限责任公司 | Device and method for detecting content of chloride ions in anodic formed foil electrolyte |
| CN111122563A (en) * | 2018-11-01 | 2020-05-08 | 广东中科康仪生物技术有限公司 | Method and kit for detecting Na in saliva of hypertension patient |
| CN112304903A (en) * | 2020-10-16 | 2021-02-02 | 新疆众和股份有限公司 | Method for detecting concentration of chloride ions in turbid formed liquid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107543818A (en) * | 2017-08-31 | 2018-01-05 | 九江德福电子材料有限公司 | Trace chlorine detection method in a kind of copper sulfate electrolyte |
| CN111122563A (en) * | 2018-11-01 | 2020-05-08 | 广东中科康仪生物技术有限公司 | Method and kit for detecting Na in saliva of hypertension patient |
| CN110726719A (en) * | 2019-10-17 | 2020-01-24 | 广西贺州市桂东电子科技有限责任公司 | Device and method for detecting content of chloride ions in anodic formed foil electrolyte |
| CN112304903A (en) * | 2020-10-16 | 2021-02-02 | 新疆众和股份有限公司 | Method for detecting concentration of chloride ions in turbid formed liquid |
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