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Iron ores - Determination of cadmium content - Hydride generation-atomic fluorescence spectrometric method
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Basic data
| Standard ID | GB/T 6730.79-2019 (GB/T6730.79-2019) |
| Description (Translated English) | Iron ores - Determination of cadmium content - Hydride generation-atomic fluorescence spectrometric method |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | D31 |
| Classification of International Standard | 73.060.10 |
| Word Count Estimation | 14,148 |
| Date of Issue | 2019-08-30 |
| Date of Implementation | 2020-07-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 6730.79-2019: Iron ores - Determination of cadmium content - Hydride generation-atomic fluorescence spectrometric method
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Iron ores - Determination of cadmium content - Hydride generation-atomic fluorescence spectrometric method
ICS 73.060.10
D31
National Standards of People's Republic of China
Determination of cadmium content in iron ore
Hydride generation-atomic fluorescence spectrometry
Ironores-Determinationofcadmiumcontent-
Hydridegeneration-atomicfluorescencespectrometricmethod
Published on.2019-08-30
2020-07-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
GB/T 6730 "Iron Ore" is divided into dozens of parts.
This part is the 79th part of GB/T 6730.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part was proposed by the China Iron and Steel Association.
This part is under the jurisdiction of the National Iron Ore and Direct Reduced Iron Standardization Technical Committee (SAC/TC317).
This section drafted by. Shanghai Entry-Exit Inspection and Quarantine Bureau Industrial Products and Raw Materials Testing Technology Center, Ningbo Inspection and Quarantine Science and Technology Research
Institute of Research, Metallurgical Industry Information Standards Institute.
The main drafters of this section. Liu Wei, Qin Yuqiong, Wang Bing, Yan Hong, Fu Wei, Zhu Zhixiu, Li Chen, Chen Zibin.
Determination of cadmium content in iron ore
Hydride generation-atomic fluorescence spectrometry
Cautions - Personnel using this section should have hands-on experience in formal laboratory work. This section does not address all possible security questions.
question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set by the relevant national regulations.
1 Scope
This part of GB/T 6730 specifies the determination of cadmium in iron ore by atomic fluorescence spectrometry.
This section applies to natural iron ore, iron concentrates and lump ore, including the determination of cadmium content in sintered products. Measuring range (mass score).
0.00002%~0.020%.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) Part 1. General and definition
GB/T 6379.2 Accuracy of measurement methods and measurement results (accuracy and precision) Part 2. Determining standard measurement methods
Basic method of repeatability and reproducibility
GB/T 6682 Analytical laboratory water specifications and experimental methods
GB/T 6730.1 Preparation of pre-dried samples for iron ore analysis
GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values
GB/T 10322.1 Iron ore sampling and sample preparation method
GB/T 12806 laboratory glass instrument single standard line volumetric flask
GB/T 12807 laboratory glass instrument indexing pipette
GB/T 12808 laboratory glass instrument single standard line pipette
GB/T 21191 Atomic Fluorescence Spectrometer
3 Principle
Decompose the sample with hydrochloric acid, nitric acid, hydrofluoric acid, add perchloric acid fuming, mask the interfering elements in the test solution with a masking agent, and use nickel chloride as the
The sensitizer, under certain acidity, the test solution and the sodium borohydride solution are used to generate cadmium chemical vapor through the hydride generator, and enter the quartz tube with the carrier gas.
The fluorescence intensity was measured on an atomic fluorescence spectrometer, and the cadmium content was calculated according to the standard curve method.
4 reagents
In the analysis, unless otherwise stated, only approved analytical reagents and secondary water in accordance with GB/T 6682 or equivalent in purity are used.
Water.
4.1 Hydrochloric acid, ρ = 1.19 g/mL.
4.2 Nitric acid, ρ = 1.42 g/mL.
GB/T 6730.79-2019
Iron ores - Determination of cadmium content - Hydride generation-atomic fluorescence spectrometric method
ICS 73.060.10
D31
National Standards of People's Republic of China
Determination of cadmium content in iron ore
Hydride generation-atomic fluorescence spectrometry
Ironores-Determinationofcadmiumcontent-
Hydridegeneration-atomicfluorescencespectrometricmethod
Published on.2019-08-30
2020-07-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
GB/T 6730 "Iron Ore" is divided into dozens of parts.
This part is the 79th part of GB/T 6730.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part was proposed by the China Iron and Steel Association.
This part is under the jurisdiction of the National Iron Ore and Direct Reduced Iron Standardization Technical Committee (SAC/TC317).
This section drafted by. Shanghai Entry-Exit Inspection and Quarantine Bureau Industrial Products and Raw Materials Testing Technology Center, Ningbo Inspection and Quarantine Science and Technology Research
Institute of Research, Metallurgical Industry Information Standards Institute.
The main drafters of this section. Liu Wei, Qin Yuqiong, Wang Bing, Yan Hong, Fu Wei, Zhu Zhixiu, Li Chen, Chen Zibin.
Determination of cadmium content in iron ore
Hydride generation-atomic fluorescence spectrometry
Cautions - Personnel using this section should have hands-on experience in formal laboratory work. This section does not address all possible security questions.
question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set by the relevant national regulations.
1 Scope
This part of GB/T 6730 specifies the determination of cadmium in iron ore by atomic fluorescence spectrometry.
This section applies to natural iron ore, iron concentrates and lump ore, including the determination of cadmium content in sintered products. Measuring range (mass score).
0.00002%~0.020%.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) Part 1. General and definition
GB/T 6379.2 Accuracy of measurement methods and measurement results (accuracy and precision) Part 2. Determining standard measurement methods
Basic method of repeatability and reproducibility
GB/T 6682 Analytical laboratory water specifications and experimental methods
GB/T 6730.1 Preparation of pre-dried samples for iron ore analysis
GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values
GB/T 10322.1 Iron ore sampling and sample preparation method
GB/T 12806 laboratory glass instrument single standard line volumetric flask
GB/T 12807 laboratory glass instrument indexing pipette
GB/T 12808 laboratory glass instrument single standard line pipette
GB/T 21191 Atomic Fluorescence Spectrometer
3 Principle
Decompose the sample with hydrochloric acid, nitric acid, hydrofluoric acid, add perchloric acid fuming, mask the interfering elements in the test solution with a masking agent, and use nickel chloride as the
The sensitizer, under certain acidity, the test solution and the sodium borohydride solution are used to generate cadmium chemical vapor through the hydride generator, and enter the quartz tube with the carrier gas.
The fluorescence intensity was measured on an atomic fluorescence spectrometer, and the cadmium content was calculated according to the standard curve method.
4 reagents
In the analysis, unless otherwise stated, only approved analytical reagents and secondary water in accordance with GB/T 6682 or equivalent in purity are used.
Water.
4.1 Hydrochloric acid, ρ = 1.19 g/mL.
4.2 Nitric acid, ρ = 1.42 g/mL.
...
