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GB/T 6730.79-2019 PDF English

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GB/T 6730.79-2019: Iron ores - Determination of cadmium content - Hydride generation-atomic fluorescence spectrometric method
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GB/T 6730.79-2019279 Add to Cart 3 days Iron ores - Determination of cadmium content - Hydride generation-atomic fluorescence spectrometric method Valid

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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. ......

Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.

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