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GB/T 6276.2-2010: Determination of ammonium hydrogen carbonate for industrial use -- Part 2: Chloride content -- Potentiometric titration method
Status: Obsolete GB/T 6276.2: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6276.2-2010 | English | 239 |
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Determination of ammonium hydrogen carbonate for industrial use -- Part 2: Chloride content -- Potentiometric titration method
| Obsolete |
GB/T 6276.2-2010
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| GB/T 6276.2-1986 | English | 199 |
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Ammonium hydrogen carbonate for industrial use--Determination of chloride content--Potentiometric method
| Obsolete |
GB/T 6276.2-1986
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PDF similar to GB/T 6276.2-2010
Basic data | Standard ID | GB/T 6276.2-2010 (GB/T6276.2-2010) | | Description (Translated English) | Determination of ammonium hydrogen carbonate for industrial use -- Part 2: Chloride content -- Potentiometric titration method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G12 | | Classification of International Standard | 71.060.50 | | Word Count Estimation | 6,647 | | Date of Issue | 2010-06-30 | | Date of Implementation | 2011-01-01 | | Older Standard (superseded by this standard) | GB/T 6276.2-1986 | | Quoted Standard | HG/T 2843 | | Regulation (derived from) | National Standard Approval Announcement 2010 No.2 (Total No.157) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the determination by potentiometric titration of chloride for industrial use ammonium bicarbonate content. This section applies to the determination of chloride content of ammonium bicarbonate industrial use. | GB/T 6276.2-2010: Determination of ammonium hydrogen carbonate for industrial use -- Part 2: Chloride content -- Potentiometric titration method
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Determination of ammonium hydrogen carbonate for industrial use Part 2. Chloride content Potentiometric titration method
ICS 71.060.50
G12
National Standards of People's Republic of China
Replacing GB/T 6276.2-1986
Determination of ammonium bicarbonate industrial
Part 2. potentiometric titration of chloride content
Part 2. Chloridecontent-Potentiometrictitrationmethod
Issued on. 2010-06-30
2011-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 6276 "industrial use - Determination of ammonium bicarbonate method" is divided into nine sections.
--- Part 1. ammonium bicarbonate content of acid-base titration;
--- Part 2. potentiometric titration of chloride content;
--- Part 3. sulphide content Visible turbidimetric method;
--- Part 4. sulphate content Visible turbidimetric method;
--- Part 5. ash content by weight method;
--- Part 6. iron content - Phenanthroline spectrophotometric method;
--- Part 7. arsenic content diethyl dithiocarbamate silver spectrophotometry;
--- Part 8. arsenic content Gutzeit method;
--- Part 9. heavy metal content Visible turbidimetric method.
This part of GB/T 26276 Part of.
Appendix A of this section is an informative annex.
This Part replaces GB/T 6276.2-1986 "ammonium chloride for industrial use - Determination of potentiometric titration."
This portion of the GB/T 6276.2-1986 The main differences are.
--- Reagent solution, standard titration solution preparation and calibration methods such as the implementation of HG/T 2843 standards;
--- Measuring electrode selection chloride ion selective electrode;
--- Increasing the parallel determination results allow poor regulations.
This part is proposed by the China Petroleum and Chemical Industry Association.
This part of the National Standardization Technical Committee centralized fertilizer and soil conditioner.
This section drafted by. National Fertilizer Quality Supervision and Inspection Center (Shanghai).
The main drafters of this section. Zhou Qingyun, Qu Xin.
This section was first issued in 1986.
Determination of ammonium bicarbonate industrial
Part 2. potentiometric titration of chloride content
1 Scope
GB/T 6276 This section specifies the determination by potentiometric titration of chloride in industrial ammonium bicarbonate content.
This section applies to the determination of ammonium chloride content industry.
2 Normative references
The following documents contain provisions which, through reference to GB/T 6276 to the present, constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
HG/T 2843 fertilizer products for chemical analysis commonly used standard titration solution, standard solution, reagent solution and indicator solution
Principle 3
In acetone (or ethanol) in acidic solution of silver ions, chloride ion-selective electrode or a silver - silver sulfide electrode is a measuring electrode, calomel electrode
As reference electrode, titration with standard silver nitrate titration, potentiometric titration to determine the end point jump.
4 Reagents and materials
Reagents and solutions following the flammable and corrosive, the operator should be careful as splashed on the skin should immediately wash with water and, if
Suited immediate medical attention.
This part of the reagent solution and water, in the specifications and method of preparation is not specified, it shall comply with the provisions of HG/T 2843's.
4.1 acetone.
4.2 95% ethanol.
4.3 30% hydrogen peroxide.
4.4 nitric acid solution, 6mol/L.
4.5 saturated solution of potassium nitrate.
4.6 sodium carbonate solution, 5%.
4.7 potassium chloride standard solution, 0.1mol/L. Accurately weigh 3.728g pre-dried at 130 ℃ to constant quality potassium chloride (reference
Reagent), weighing accuracy of 0.0002g, beaker, add water to dissolve transferred to 500mL volumetric flask, dilute to the mark with water, shake spare.
4.8 potassium chloride standard solution. 0.005mol/L, draw 5mL potassium chloride standard solution (4.7), placed in 100mL volumetric flask, dilute with water
Release to the mark.
4.9 standard silver nitrate titration solution, c (AgNO3) = 0.1mol/L.
4.10 standard silver nitrate titration solution, c (AgNO3) = 0.005mol/L.
4.10.1 formulated
Draw 5mL standard silver nitrate titration solution (4.9), placed in 100mL flask, diluted with water to the mark.
4.10.2 Calibration
Draw 5mL potassium chloride standard solution (4.8), placed in 150mL beaker, add water, 5mL, add a drop of bromophenol blue indicator solution, a solution of nitrate
Acid solution of about 1 to 2 drops of the solution is just a yellow. Then add 30mL acetone, placed in an electromagnetic stirrer, the beaker was placed in an electromagnetic stirrer
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