1
/
de
4
PayPal, credit cards. Download editable-PDF and invoice in 1 second!
GB/T 21933.1-2008 English PDF (GBT21933.1-2008)
GB/T 21933.1-2008 English PDF (GBT21933.1-2008)
Prix habituel
$160.00 USD
Prix habituel
Prix promotionnel
$160.00 USD
Prix unitaire
/
par
Frais d'expédition calculés à l'étape de paiement.
Impossible de charger la disponibilité du service de retrait
Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB/T 21933.1-2008
Historical versions: GB/T 21933.1-2008
Preview True-PDF (Reload/Scroll if blank)
GB/T 21933.1-2008: Ferronickel -- Determination of nickel content -- The dimethylglyoxime gravimetric method
GB/T 21933.1-2008
Ferronickel - Determination of nickel content - The dimethylglyoxime gravimetric method
ICS 77.100
H11
National Standards of People's Republic of China
GB/T 21933.1-2008/ISO 6352.1985
Determination of nickel, iron and nickel content
Diacetyl oxime gravimetric method
(ISO 6352.1985, IDT)
2008-05-30 released
Implementation of.2008-12-01
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Issued by China National Standardization Administration
Preface
This part of GB/T 21933 is equivalent to ISO 6352.1985 "Nickel-Iron---Determination of Nickel Content---Diacetyl Oxime Gravimetric Method."
The technical content of this part is identical with ISO 6352.1985.For ease of use, this part has been modified as follows.
a) The term "this International Standard" is changed to "this Part";
b) Use a decimal point "." to replace the comma "," as a decimal point in the English version;
c) Delete the foreword of the international standard;
d) National standards are adopted for normative references.
Appendix A of this section is a normative appendix, and Appendix B is an informative appendix.
This part was proposed by the China Iron and Steel Association.
This part is under the jurisdiction of the Metallurgical Industry Information Standards Institute.
Drafting organization of this section. Shanxi Taigang Stainless Steel Co., Ltd.
The main drafters of this section. Dai Xueqian, Wu Jing, Hu Jianchun.
GB/T 21933.1-2008/ISO 6352.1985
Determination of nickel, iron and nickel content
Diacetyl oxime gravimetric method
Warning. The personnel using this section should have practical experience in formal laboratory work. This section does not point out all possible security issues.
The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.
1 scope
This part of GB/T 21933 specifies the diacetyl oxime gravimetric method for the determination of nickel content in ferronickel.
This section applies to the determination of nickel content in ferronickel, and the determination range (mass fraction). 15% to 60%.
2 Normative references
The clauses in the following documents have become clauses of this part by reference to this part of GB/T 21933.All dated quotations
All subsequent amendments (excluding errata content) or revisions do not apply to this section, however, it is encouraged to reach
The parties to the agreement study whether the latest versions of these documents can be used. For undated references, the latest version is applicable to this
section.
GB/T 12805 Laboratory glass burette
GB/T 12806 Laboratory glass instrument single mark volumetric flask
GB/T 12808 single-marked pipette for laboratory glassware
GB/T 63779.1 Measurement methods and accuracy of results (accuracy and precision) Part 1.General principles and definitions (GB/T 63779.1-
2004, ISO 5725-1..1994, IDT)
GB/T 63779.2 Accuracy of measurement methods and results (accuracy and precision) Part 2.Determine the repeatability of standard measurement methods
The basic method of performance and reproducibility (GB/T 6379.2-2004, ISO 5725-2.1994, IDT)
GB/T 11415-1989 Laboratory sintered (porous) filter pore size, classification and designation
3 Principle
The sample is decomposed by nitric acid, and perchloric acid is dehydrated to precipitate silicon. After the silicon is removed by filtration, it is precipitated with diacetyl oxime ethanol solution in an ammoniacal tartrate medium.
Nickel, after two precipitations, was dried and weighed at 150°C, and the residual nickel in the filtrate was determined by atomic absorption method.
4 Reagents and materials
Unless otherwise specified, only reagents and distilled water confirmed to be analytically pure or water of equivalent purity are used in the analysis.
4.1 Hydrochloric acid, ρ1.19g/mL.
4.2 Ammonia water, ρ0.925g/mL.
4.3 Nitric acid, ρ1.42g/mL.
4.4 Perchloric acid, ρ1.67g/mL.
4.5 Hydrofluoric acid, ρ1.13g/mL.
4.6 Acetic acid, ρ1.05g/mL.
4.7 Hydrochloric acid, 1+1.
4.8 Hydrochloric acid, 1+9.
4.9 Nitric acid, 1+1.
4.10 Acetic acid, 1+1.
GB/T 21933.1-2008/ISO 6352.1985
4.11 Hydrofluoric acid, 1+1.
4.12 Diacetyl oxime, 10g/L, ethanol solution.
4.13 Tartaric acid solution, 500g/L.
5 Instruments
Usually laboratory glassware, and the following instruments.
5.1 Filter crucible, sintered porous glass, pore size 10μm-20μm.
Note. Comply with the P16 specification specified in GB/T 11415-1989, or the commercially available G3 and G4 crucibles.
5.2 Glass beaker with a capacity of 600 mL.
5.3 The pipette, with a capacity of 50 mL and 100 mL, should comply with the Class A specified in GB/T 12808.
5.4 Volumetric flasks, with a capacity of.200ml and 1000ml, should comply with the level A specified in GB/T 12806.
5.5 Polytetrafluoroethylene (PTFE) beaker with a capacity of 600 mL, used for samples with high silicon content.
6 Take samples
6.1 The collection and preparation of laboratory samples shall be carried out in accordance with the agreed procedures. When there is a dispute, it shall be carried out in accordance with relevant national standards.
6.2 Laboratory samples are generally granular, drill chips or milling chips, and no further processing is required.
6.3 If the sample is contaminated by grease during grinding or drilling, it should be cleaned with analytical pure acetone and dried in air.
6.4 If the laboratory sample has a large difference in particle size, the sample size should be obtained after reduction.
7 Analysis steps
Warning 1.Perchloric acid fume is a strong oxidant and may cause an explosion when it encounters organic materials. All smoking processes should be suitable for use
Carry out perchloric acid in a fume hood.
Warning 2.Hydrofluoric acid is a strong corrosive acid, which is very irritating and corrosive to the skin, and can cause extreme burns to the skin, which is difficult to heal.
If it comes in contact with the skin, rinse immediately with water and seek medical attention.
7.1 The amount of sample
Weigh 4.0g sample, accurate to 0.001g.
7.2 Blank test
Carry out a blank test with the sample.
7.3 Preparation of the crucible
7.3.1 Put a mixture of 20mL hot hydrochloric acid (4.1), 10mL nitric acid (4.3), and 30mL water into a filter crucible (5.1) to filter, then
Wash the acid substance on the crucible with warm water.
7.3.2 Place in an oven at 150°C to dry for 2 hours, cool in a desiccator for 60 minutes, and quickly weigh.
Note 1.This process is suitable for processing new crucibles or cleaning old crucibles after analysis.
Note 2.In order to improve accuracy, weighing crucibles and sediments should be carried out at the temperature and humidity as close as possible to the empty crucibles.
7.4 Preparation of test solution
7.4.1 Place the sample (7.1) in a 600ml beaker (5.2), add 25ml of water and 50ml of nitric acid (4.9) to decompose the sample, cover with a watch glass,
Dissolve the sample (7.1) at low temperature and dissolve it as completely as possible.
Note. If the nickel-iron content of silicon exceeds 1% (mass fraction), use a Teflon beaker (5.5), add 25mL water, 40mL nitric acid (4.9), and 10mL hydrochloric acid.
(4.1) Treat the sample and boil slightly. In order to completely decompose the sample, add 10mL hydrofluoric acid (4.11), 40mL perchloric acid (4.4), and heat until the perchloric acid is emitted.
Fume, cool, transfer all the solution to a glass beaker (5.2), heat un...
Get QUOTATION in 1-minute: Click GB/T 21933.1-2008
Historical versions: GB/T 21933.1-2008
Preview True-PDF (Reload/Scroll if blank)
GB/T 21933.1-2008: Ferronickel -- Determination of nickel content -- The dimethylglyoxime gravimetric method
GB/T 21933.1-2008
Ferronickel - Determination of nickel content - The dimethylglyoxime gravimetric method
ICS 77.100
H11
National Standards of People's Republic of China
GB/T 21933.1-2008/ISO 6352.1985
Determination of nickel, iron and nickel content
Diacetyl oxime gravimetric method
(ISO 6352.1985, IDT)
2008-05-30 released
Implementation of.2008-12-01
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Issued by China National Standardization Administration
Preface
This part of GB/T 21933 is equivalent to ISO 6352.1985 "Nickel-Iron---Determination of Nickel Content---Diacetyl Oxime Gravimetric Method."
The technical content of this part is identical with ISO 6352.1985.For ease of use, this part has been modified as follows.
a) The term "this International Standard" is changed to "this Part";
b) Use a decimal point "." to replace the comma "," as a decimal point in the English version;
c) Delete the foreword of the international standard;
d) National standards are adopted for normative references.
Appendix A of this section is a normative appendix, and Appendix B is an informative appendix.
This part was proposed by the China Iron and Steel Association.
This part is under the jurisdiction of the Metallurgical Industry Information Standards Institute.
Drafting organization of this section. Shanxi Taigang Stainless Steel Co., Ltd.
The main drafters of this section. Dai Xueqian, Wu Jing, Hu Jianchun.
GB/T 21933.1-2008/ISO 6352.1985
Determination of nickel, iron and nickel content
Diacetyl oxime gravimetric method
Warning. The personnel using this section should have practical experience in formal laboratory work. This section does not point out all possible security issues.
The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.
1 scope
This part of GB/T 21933 specifies the diacetyl oxime gravimetric method for the determination of nickel content in ferronickel.
This section applies to the determination of nickel content in ferronickel, and the determination range (mass fraction). 15% to 60%.
2 Normative references
The clauses in the following documents have become clauses of this part by reference to this part of GB/T 21933.All dated quotations
All subsequent amendments (excluding errata content) or revisions do not apply to this section, however, it is encouraged to reach
The parties to the agreement study whether the latest versions of these documents can be used. For undated references, the latest version is applicable to this
section.
GB/T 12805 Laboratory glass burette
GB/T 12806 Laboratory glass instrument single mark volumetric flask
GB/T 12808 single-marked pipette for laboratory glassware
GB/T 63779.1 Measurement methods and accuracy of results (accuracy and precision) Part 1.General principles and definitions (GB/T 63779.1-
2004, ISO 5725-1..1994, IDT)
GB/T 63779.2 Accuracy of measurement methods and results (accuracy and precision) Part 2.Determine the repeatability of standard measurement methods
The basic method of performance and reproducibility (GB/T 6379.2-2004, ISO 5725-2.1994, IDT)
GB/T 11415-1989 Laboratory sintered (porous) filter pore size, classification and designation
3 Principle
The sample is decomposed by nitric acid, and perchloric acid is dehydrated to precipitate silicon. After the silicon is removed by filtration, it is precipitated with diacetyl oxime ethanol solution in an ammoniacal tartrate medium.
Nickel, after two precipitations, was dried and weighed at 150°C, and the residual nickel in the filtrate was determined by atomic absorption method.
4 Reagents and materials
Unless otherwise specified, only reagents and distilled water confirmed to be analytically pure or water of equivalent purity are used in the analysis.
4.1 Hydrochloric acid, ρ1.19g/mL.
4.2 Ammonia water, ρ0.925g/mL.
4.3 Nitric acid, ρ1.42g/mL.
4.4 Perchloric acid, ρ1.67g/mL.
4.5 Hydrofluoric acid, ρ1.13g/mL.
4.6 Acetic acid, ρ1.05g/mL.
4.7 Hydrochloric acid, 1+1.
4.8 Hydrochloric acid, 1+9.
4.9 Nitric acid, 1+1.
4.10 Acetic acid, 1+1.
GB/T 21933.1-2008/ISO 6352.1985
4.11 Hydrofluoric acid, 1+1.
4.12 Diacetyl oxime, 10g/L, ethanol solution.
4.13 Tartaric acid solution, 500g/L.
5 Instruments
Usually laboratory glassware, and the following instruments.
5.1 Filter crucible, sintered porous glass, pore size 10μm-20μm.
Note. Comply with the P16 specification specified in GB/T 11415-1989, or the commercially available G3 and G4 crucibles.
5.2 Glass beaker with a capacity of 600 mL.
5.3 The pipette, with a capacity of 50 mL and 100 mL, should comply with the Class A specified in GB/T 12808.
5.4 Volumetric flasks, with a capacity of.200ml and 1000ml, should comply with the level A specified in GB/T 12806.
5.5 Polytetrafluoroethylene (PTFE) beaker with a capacity of 600 mL, used for samples with high silicon content.
6 Take samples
6.1 The collection and preparation of laboratory samples shall be carried out in accordance with the agreed procedures. When there is a dispute, it shall be carried out in accordance with relevant national standards.
6.2 Laboratory samples are generally granular, drill chips or milling chips, and no further processing is required.
6.3 If the sample is contaminated by grease during grinding or drilling, it should be cleaned with analytical pure acetone and dried in air.
6.4 If the laboratory sample has a large difference in particle size, the sample size should be obtained after reduction.
7 Analysis steps
Warning 1.Perchloric acid fume is a strong oxidant and may cause an explosion when it encounters organic materials. All smoking processes should be suitable for use
Carry out perchloric acid in a fume hood.
Warning 2.Hydrofluoric acid is a strong corrosive acid, which is very irritating and corrosive to the skin, and can cause extreme burns to the skin, which is difficult to heal.
If it comes in contact with the skin, rinse immediately with water and seek medical attention.
7.1 The amount of sample
Weigh 4.0g sample, accurate to 0.001g.
7.2 Blank test
Carry out a blank test with the sample.
7.3 Preparation of the crucible
7.3.1 Put a mixture of 20mL hot hydrochloric acid (4.1), 10mL nitric acid (4.3), and 30mL water into a filter crucible (5.1) to filter, then
Wash the acid substance on the crucible with warm water.
7.3.2 Place in an oven at 150°C to dry for 2 hours, cool in a desiccator for 60 minutes, and quickly weigh.
Note 1.This process is suitable for processing new crucibles or cleaning old crucibles after analysis.
Note 2.In order to improve accuracy, weighing crucibles and sediments should be carried out at the temperature and humidity as close as possible to the empty crucibles.
7.4 Preparation of test solution
7.4.1 Place the sample (7.1) in a 600ml beaker (5.2), add 25ml of water and 50ml of nitric acid (4.9) to decompose the sample, cover with a watch glass,
Dissolve the sample (7.1) at low temperature and dissolve it as completely as possible.
Note. If the nickel-iron content of silicon exceeds 1% (mass fraction), use a Teflon beaker (5.5), add 25mL water, 40mL nitric acid (4.9), and 10mL hydrochloric acid.
(4.1) Treat the sample and boil slightly. In order to completely decompose the sample, add 10mL hydrofluoric acid (4.11), 40mL perchloric acid (4.4), and heat until the perchloric acid is emitted.
Fume, cool, transfer all the solution to a glass beaker (5.2), heat un...
Share



