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GB/T 6730.39-2017: Iron ores -- Determination of nickel content -- Dimethylglyoxime spectrophotometric method
Status: Valid GB/T 6730.39: Evolution and historical versions
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| GB/T 6730.39-2017 | English | 199 |
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Iron ores -- Determination of nickel content -- Dimethylglyoxime spectrophotometric method
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GB/T 6730.39-2017
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| GB/T 6730.39-1986 | English | 199 |
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Methods for chemical analysis of iron ores. The dimethylglyoxime photometric method for the determination of nickel content
| Obsolete |
GB/T 6730.39-1986
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PDF similar to GB/T 6730.39-2017
Basic data | Standard ID | GB/T 6730.39-2017 (GB/T6730.39-2017) | | Description (Translated English) | Iron ores -- Determination of nickel content -- Dimethylglyoxime spectrophotometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D31 | | Classification of International Standard | 73.060.10 | | Word Count Estimation | 10,113 | | Date of Issue | 2017-09-07 | | Date of Implementation | 2018-06-01 | | 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 | GB/T 6730.39-2017: Iron ores -- Determination of nickel content -- Dimethylglyoxime spectrophotometric method
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Iron ores - Determination of nickle content - Dimetylglyoxime spectrophotometric method
ICS 73.060.10
D31
National Standards of People's Republic of China
Replacing GB/T 6730.39-1986
Iron ores - Determination of nickel content
Dimethylglyoxime Spectrophotometry
2017-09-07 Posted
2018-06-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
GB/T 6730 "iron ore" is divided into dozens of sections.
This section GB/T 6730 Part 39.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This Part replaces GB/T 6730.39-1986 "chemical analysis of iron ores dimethylglyoxime spectrophotometric determination of nickel content," this section and
GB/T 6730.39-1986 comparison, in addition to editorial changes, the main technical changes are as follows.
--- Standard name was changed to "Determination of nickel content in iron ores dimethylglyoxime spectrophotometry";
--- Added "warning" "normative references" "instrument" and "test report" Chapter and content, the original chapter number has been adjusted accordingly;
--- Clear and standardized sample and sample preparation of the specific requirements;
--- Standard "sample size" to "sample volume", and clear the weighing accuracy;
--- Removed the coefficient (1) of the coefficient "K" and "K" of the statement;
--- Added "the final result of the calculation."
This part is proposed by China Iron and Steel Association.
This part of the National Iron Ore and Direct Reduced Iron Standardization Technical Committee (SAC/TC317) centralized.
This section is drafted by Ningbo Inspection and Quarantine Science and Technology Research Institute, Erenhot Inspection and Quarantine Bureau, Metallurgical Industry Information Standards Institute.
The main drafters of this section. Ren Chunsheng, Huang Shijie, Ningguo East, Chen Hehai, Liao Haiping, Yu Qing, Wang Yan, Fu Ran Ran, Chen Zhibin.
This part of the standard replaces the previous version of the release.
--- GB/T 6730.39-1986.
Iron ores - Determination of nickel content
Dimethylglyoxime Spectrophotometry
Warning --- personnel using this section should have formal laboratory work experience. This section does not indicate all possible safety issues
question. It is the user's responsibility to take appropriate safety and health measures and to ensure compliance with the requirements of the relevant state laws and regulations.
1 Scope
GB/T 6730 provisions of this part of dimethylglyoxime spectrophotometric determination of nickel content.
This section applies to iron ore, iron ore, sinter and pellets Determination of nickel content. Measurement range (mass fraction).
0.0050% ~ 0.10%.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 6682 analytical laboratory water specifications and test methods
Preparation of pre-dried samples for analysis of iron ores GB/T 6730.1
GB/T 8170 rounded repair rules and limit values of the representation and judgment
GB/T 10322.1 Iron ore sampling and sample preparation methods
GB/T 12806 laboratory glassware single standard line capacity bottle
GB/T 12807 Laboratory glassware graduated pipette
GB/T 12808 laboratory glassware single standard pipette
3 principle
At pH 8-9, nickel forms a complex with dimethylglyoxime and is extracted with chloroform. In ammonium hydroxide medium, ammonium persulfate is used as oxygen
Agents, nickel and dimethylglyoxime to form a stable wine red complex. At a wavelength of 460 nm, its absorbance was measured, whereby the amount of nickel was measured.
4 Reagents and materials
Unless otherwise indicated in the analysis, the use of only approved analytical reagent and in line with GB/T 6682 more than two distilled water or purity
Quite water.
4.1 potassium pyrosulfate.
4.2 hydroxylamine hydrochloride.
Ammonium persulfate.
Hydrochloric acid, p approximately 1.19 g/mL.
4.5 nitric acid, p approximately 1.42 g/mL.
4.6 Hydrofluoric acid, p about 1.15 g/mL.
4.7 trichloromethane.
4.8 Hydrochloric acid, 1 23.
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