CN110806460A - Detection method for rapidly determining main content of ammonium chloride - Google Patents
Detection method for rapidly determining main content of ammonium chloride Download PDFInfo
- Publication number
- CN110806460A CN110806460A CN201810886996.9A CN201810886996A CN110806460A CN 110806460 A CN110806460 A CN 110806460A CN 201810886996 A CN201810886996 A CN 201810886996A CN 110806460 A CN110806460 A CN 110806460A
- Authority
- CN
- China
- Prior art keywords
- ammonium chloride
- content
- chloride
- silver nitrate
- detection method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention provides a detection method of main content in ammonium chloride, which is characterized in that chloride ions react with silver nitrate to generate silver chloride precipitate, and the content of sodium sulfide is further calculated according to the content of the chloride ions; the detection method of the invention adopts a precipitation titration method, has short reaction time, can complete operation in a short time, has more stable property and introduces less error. The experimental process has no release of toxic gas, and is more environment-friendly. The invention can accurately detect the content of the ammonium chloride, and is innovative in that the detection can be completed in a short time.
Description
Technical Field
The invention relates to the field of determination of ammonium chloride, in particular to a detection method for rapidly determining the main content of ammonium chloride.
Background
Ammonium chloride is colorless crystal or white granular powder, is a strong electrolyte, is dissolved in water to ionize ammonium ions and chloride ions, and has white smoke when ammonia gas and hydrogen chloride are combined to generate ammonium chloride. No smell of ammonium chloride. Salty in flavor and bitter in taste. The moisture absorption is small, but moisture absorption and agglomeration can be realized in rainy days with moisture absorption. Powdery ammonium chloride is very easy to deliquesce. However, when the relative humidity in the air is higher than the moisture absorption point, the ammonium chloride generates moisture absorption phenomenon and is easy to agglomerate. Is easily soluble in water, slightly soluble in ethanol, soluble in liquid ammonia, and insoluble in acetone and diethyl ether. Hydrochloric acid and sodium chloride can reduce their solubility in water.
Titration after distillation by the national standard method is a classical arbitration method for measuring ammonium chloride, and is widely used in the chemical industry. However, distillation is required, the operation is complicated and time-consuming, and the sealing performance of the whole experimental apparatus is required to be good. Firstly, a distillation method is used in the process, and the installation steps of the glass instrument are complicated and time-consuming. Second, the distillation method has a severe requirement on the sealing performance of the equipment, and if the sealing performance is not good, the accuracy of the result and the environment are affected.
Disclosure of Invention
According to the technical problem, the invention provides a detection method for rapidly determining the content of ammonium chloride, which is characterized in that a silver nitrate solution is used for titrating chloride ions to generate a white silver chloride precipitate, potassium chromate is used as an indicator to indicate an end point, and the content of the ammonium chloride is further calculated according to the content of the chloride ions; according to the detection method of the ammonium chloride, the specific steps are as follows:
the first step is as follows: preparing silver nitrate solution, preparing 15-20g/L silver nitrate solution by using analytically pure silver nitrate, and calibrating by using sodium chloride;
the second step is that: preparing an ammonium chloride solution, directly weighing 0.05-0.2g of ammonium chloride in a titration flask, adding water by using a dropper, and dissolving the ammonium chloride by adding a small amount of water until the ammonium chloride is completely dissolved;
the third step: adding 2-3 drops of potassium chromate indicator into a titration bottle, and titrating with a silver nitrate standard solution until brick red precipitate appears as a terminal point;
the fourth step: and finally, calculating the content of chloride ions through the stoichiometric relation of the precipitation reaction, and further calculating the content of ammonium chloride.
The invention has the beneficial effects that: the detection method directly titrates chloride ions in ammonium chloride by using silver nitrate, and has the advantages of more stable property, less introduced error and short chemical reaction time; secondly, no toxic gas is released in the whole experiment process, so that the method is more environment-friendly. The method can accurately detect the content of the ammonium chloride, and can finish the determination of the detected component in a short time.
Drawings
FIG. 1 is a flow chart of one embodiment of the detection method of the present invention.
Detailed Description
The invention will be further explained with reference to fig. 1:
example 1
When in use, analytically pure silver nitrate is used for preparing a silver nitrate solution with a certain concentration. Accurately weighing 0.1000g of ammonium chloride sample in a titration flask, adding 2-3 drops of potassium chromate indicator in the titration flask, titrating with silver nitrate standard solution until brick red precipitate appears as a terminal point, calculating the content of chloride ions through the stoichiometric relation of precipitation reaction, and further calculating the content of ammonium chloride.
Example 2
Referring to fig. 1, ammonium chloride contains about 99% ammonium chloride. Firstly, weighing 0.1000g of ammonium chloride sample, dissolving with a small amount of water, adding 2-3 drops of potassium chromate indicator, and titrating with silver nitrate standard solution until brick red precipitate appears in the solution. The volume of silver nitrate consumed by titration was then 19.25ml, calculated to be 37.18 ammonium chloride. The concentration of the silver nitrate solution is 0.0978 mol/L.
Ammonium chloride content:
W％＝19.22*0.0978*52.45/0.1000*1000/100＝98.74％
the method comprises the following steps of comparing the data with national standards and achieving precision:
the above data indicate that the accuracy of this method can meet the requirements of analytical testing.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (3)
1. A detection method for rapidly determining the content of ammonium chloride is characterized in that chloride ions in the ammonium chloride react with silver nitrate to generate white silver chloride precipitate, and the content of the ammonium chloride is further calculated by a chemical reaction metering relation copper; according to the detection method of the sodium sulfide, the specific steps are as follows:
the first step is as follows: preparing silver nitrate solution, preparing 15-20g/L silver nitrate solution by using analytically pure silver nitrate, and calibrating by using sodium chloride;
the second step is that: preparing an ammonium chloride solution, directly weighing 0.05-0.2g of ammonium chloride in a titration flask, adding water by using a dropper, and dissolving the ammonium chloride by adding a small amount of water until the ammonium chloride is completely dissolved;
the third step: adding 2-3 drops of potassium chromate indicator into a titration bottle, and titrating with a silver nitrate standard solution until brick red precipitate appears as a terminal point;
the fourth step: and finally, calculating the content of chloride ions through the stoichiometric relation of the precipitation reaction, and further calculating the content of ammonium chloride.
2. The method as claimed in claim 1, wherein the third step is a precipitation titration method for determining the ammonium chloride content.
3. The method as claimed in claim 1, wherein the second step is carried out by adding distilled water at a water level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810886996.9A CN110806460A (en) | 2018-08-06 | 2018-08-06 | Detection method for rapidly determining main content of ammonium chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810886996.9A CN110806460A (en) | 2018-08-06 | 2018-08-06 | Detection method for rapidly determining main content of ammonium chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110806460A true CN110806460A (en) | 2020-02-18 |
Family
ID=69487163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810886996.9A Pending CN110806460A (en) | 2018-08-06 | 2018-08-06 | Detection method for rapidly determining main content of ammonium chloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110806460A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327030A (en) * | 2022-08-18 | 2022-11-11 | 浙江野马电池股份有限公司 | Method for measuring content of ammonium chloride in battery material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842387A (en) * | 2015-01-12 | 2016-08-10 | 内蒙古包钢钢联股份有限公司 | Method for measuring chloride ions in iron oxide powder through precipitation titration |
| CN105842236A (en) * | 2015-01-12 | 2016-08-10 | 内蒙古包钢钢联股份有限公司 | Method for measuring sodium chloride content in sintering synergist through silver nitrate titration |
-
2018
- 2018-08-06 CN CN201810886996.9A patent/CN110806460A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842387A (en) * | 2015-01-12 | 2016-08-10 | 内蒙古包钢钢联股份有限公司 | Method for measuring chloride ions in iron oxide powder through precipitation titration |
| CN105842236A (en) * | 2015-01-12 | 2016-08-10 | 内蒙古包钢钢联股份有限公司 | Method for measuring sodium chloride content in sintering synergist through silver nitrate titration |
Non-Patent Citations (1)
| Title |
|---|
| 郑付杰: "测定粘胶熟成度所用氯化铵溶液浓度标定方法探讨", 《人造纤维》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327030A (en) * | 2022-08-18 | 2022-11-11 | 浙江野马电池股份有限公司 | Method for measuring content of ammonium chloride in battery material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103954617B (en) | Method for detecting content of lithium carbonate | |
| Willems et al. | The interaction of chromium (VI), chromium (III) and chromium (II) with diphenylcarbazide, diphenylcarbazone and diphenylcarbadiazone | |
| Barbosa et al. | PKPOT, a program for the potentiometric study of ionic equilibria in aqueous and non-aqueous media | |
| CN105021545A (en) | Method for measuring contents of bismuth and lead ions in tin lead bismuth alloy electroplating solution | |
| CN101825579A (en) | Method for measuring concentration of polyacrylamide solution | |
| CN110806460A (en) | Detection method for rapidly determining main content of ammonium chloride | |
| CN104407071A (en) | Ion chromatography detection method for negative ions in sodium azide solid product or sodium azide mother liquor | |
| CN107478766A (en) | The method of chloride determination in sodium hypophosphite | |
| CN104459022A (en) | Method for determining content of sodium chloride in hexamethylene 1, 6-disodium dithiosulfate dihydrate | |
| CN100373153C (en) | Method for measuring general quantity of released gas during cable material combustion | |
| Skoog et al. | Titration of elemental sulfur with solutions of sodium cyanide | |
| CN106645137A (en) | Method for testing chelating capacity of chelating acid to metal calcium ions | |
| CN105223143A (en) | A kind of method measuring fracturing liquid content in oilfield sewage | |
| CN115950843A (en) | Improved iodine oxidation-dimethylglyoxime photometric method for detecting nickel content in steel | |
| CN109387586B (en) | Method for measuring content of sodium cyanamide | |
| CN112710777B (en) | Method for detecting fluoboric acid in mixed acid | |
| CN106290542B (en) | It is a kind of with Co in high selective measurement zinc electrolyte2+The Adsorptive Complex Wave polarography of content | |
| CN106645557A (en) | Method for measuring content of free formaldehyde in n-phenylglycinonitrile product | |
| CN105954272B (en) | The measuring method of isopropyl nitrate content in a kind of water | |
| CN111537635B (en) | Method for accurately preparing acetic acid standard curve solution and detecting protected amino acid acetic acid | |
| Mattocks et al. | A rapid titrimetric assay of phenobarbital elixir | |
| Hill et al. | Titration of Copper Oxinate in Glacial Acetic Acid | |
| CN110873781B (en) | Method for measuring content of hydrazine nitrate in single push-3 | |
| Bennett | An Electrometric Study of the Precipitation of Mercurous Hydroxide. | |
| Van Der Meer et al. | Solid-state ion-selective electrodes as end-point detectors in compleximetric titrations: Part III. Selection of some experimental conditions for back-titrations in alkaline medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200218 |