GB/T 10267.5-1988 Method for analysis of calcium metal-The determination of nitrogen by distillation-Nessler reagent photometric method (English Version)
1 Subject content and applicable scope
This standard describes the determination scope and theory of nitrogen in calcium metal, and specifies the analytical procedures, calculation result and method precision.
It is applicable to the determination of nitrogen in calcium metal, in range from 50 to 4 500μg/g.
2 Method summary
Dissolve the specimen with hydrochloric acid (1+1), transfer the solution to a distiller, add sodium hydroxide solution for vapor distillation, absorb with dilute sulfuric acid, then add Nessler reagent to the evaporated solution for color development, and then measure its absorbance at 440nm spectrophotometer wavelength.
3 Reagents
3.1 Unless otherwise specified, the analytically-pure reagents are used for the purpose of this standard.
3.2 The water is ammonia-free water: add 5mL concentrated sulfuric acid into 10L deionized water, mix the solution well and distill.
3.3 Sodium hydroxide solution: 40% (m/V).
3.4 Hydrochloric acid (1+1): with density of 1.19g/cm3.
3.5 Sulfuric acid (0.005M): with density of 1.84g/cm3.
3.6 Nessler reagent.
3.6.1 Dissolve 35g of potassium iodide with water and dilute the solution to 100mL.
3.6.2 Dissolve 17g of mercuric chloride with water and dilute the solution to 300mL.
3.6.3 Dissolve 120g of sodium hydroxide with water and dilute the solution to 600mL.
1 Subject content and applicable scope
2 Method summary
3 Reagents
4 Instrument
5 Analytical procedures
6 Calculation of analysis result
7 Method precision
Standard
GB/T 10267.5-1988 Method for analysis of calcium metal-The determination of nitrogen by distillation-Nessler reagent photometric method (English Version)
Standard No.
GB/T 10267.5-1988
Status
to be superseded
Language
English
File Format
PDF
Word Count
1000 words
Price(USD)
70.0
Implemented on
1989-10-1
Delivery
via email in 1 business day
Detail of GB/T 10267.5-1988
Standard No.
GB/T 10267.5-1988
English Name
Method for analysis of calcium metal-The determination of nitrogen by distillation-Nessler reagent photometric method
1 Subject content and applicable scope
This standard describes the determination scope and theory of nitrogen in calcium metal, and specifies the analytical procedures, calculation result and method precision.
It is applicable to the determination of nitrogen in calcium metal, in range from 50 to 4 500μg/g.
2 Method summary
Dissolve the specimen with hydrochloric acid (1+1), transfer the solution to a distiller, add sodium hydroxide solution for vapor distillation, absorb with dilute sulfuric acid, then add Nessler reagent to the evaporated solution for color development, and then measure its absorbance at 440nm spectrophotometer wavelength.
3 Reagents
3.1 Unless otherwise specified, the analytically-pure reagents are used for the purpose of this standard.
3.2 The water is ammonia-free water: add 5mL concentrated sulfuric acid into 10L deionized water, mix the solution well and distill.
3.3 Sodium hydroxide solution: 40% (m/V).
3.4 Hydrochloric acid (1+1): with density of 1.19g/cm3.
3.5 Sulfuric acid (0.005M): with density of 1.84g/cm3.
3.6 Nessler reagent.
3.6.1 Dissolve 35g of potassium iodide with water and dilute the solution to 100mL.
3.6.2 Dissolve 17g of mercuric chloride with water and dilute the solution to 300mL.
3.6.3 Dissolve 120g of sodium hydroxide with water and dilute the solution to 600mL.
Contents of GB/T 10267.5-1988
1 Subject content and applicable scope
2 Method summary
3 Reagents
4 Instrument
5 Analytical procedures
6 Calculation of analysis result
7 Method precision
