GB/T 6730.35-2016Iron ores - Determination of copper content - Oxalic acid bis-cyclohexylidene hydragide (cuprizone) spectrophotometric method (English PDF)
铁矿石 铜含量的测定 双环己酮草酰二腙分光光度法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 13, 2016
Implementation date
September 1, 2017
Scope
GB/T 6730.35-2016 is the English-translated version of 铁矿石 铜含量的测定 双环己酮草酰二腙分光光度法.
GB/T 6730.35-2016 is the Chinese standard "Iron ores - Determination of copper content - Oxalic acid bis-cyclohexylidene hydragide (cuprizone) spectrophotometric method".
Its scope clause reads: This part of GB/T 6730 specifies the determination of copper content by dicyclohexanone oxalyl dithizone spectrophotometry. This part applies to the determination of copper content in iron ore, iron concentrate, sinter and pellets.
Measurement range (mass fraction). 0.010% ~ 1.00%. Its clauses include normative reference documents; principle; reagents and materials.
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Document preview — GB/T 6730.35-2016
National Standard of the People's Republic of China
- ICS
- 73.060.10
- Classification
- D 31
- Replacing
- GB/T 6730.35-1986
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 normative reference documents
- 3 principle
- 4 Reagents and Materials
1 Scope
This part of GB/T 6730 specifies the determination of copper content by dicyclohexanone oxalyl dithizone spectrophotometry.
This part applies to the determination of copper content in iron ore, iron concentrate, sinter and pellets. Measurement range (mass fraction). 0.010% ~
1.00%.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) - Part 1. General and definitions
GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) - Part 2. Determination of standard measurement methods
The basic method of sex and reproducibility
GB/T 6682 Analytical laboratory water specifications and test methods
Preparation of pre - dried samples for analysis of iron ore GB/T 6730.1
Metallurgical products - Chemical analysis - Spectrophotometric methods
Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170
GB/T 10322.1 Iron Ore Sampling and Sample Preparation
GB/T 12806 laboratory glass instrument single standard line capacity bottle
GB/T 12807 Laboratory glass instruments - Index pipettes
GB/T 12808 Laboratory glass instruments Single line suction pipette
3 principle
The samples were decomposed with hydrochloric acid, nitric acid, hydrofluoric acid and perchloric acid. Take a certain amount of test solution, with citric acid to cover iron, aluminum and other ions pH 9.2 to 9.3, dicyclohexanone oxalyl hydrazone forms a blue complex with copper (II) and is measured at a wavelength of 600 nm
Its absorbance, calculated copper content in the sample.
4 Reagents and Materials
Unless otherwise stated, only the reagents identified as analytical reagents and those of Class 3 and Grade 3 in accordance with GB/T 6682 are used in the analysis.
Water or deionized water or water equivalent to its purity.
4.1 mixed flux
2 parts of sodium carbonate (anhydrous) and 1 part of boric acid at 105 °C ~ 110 °C drying 1h, fine grinding and mixing. With the wear bottle storage, Paul
Stored in a dryer.
4.2
hydrochloric acid, rho = 1.19 g/mL.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
Editions of GB/T 6730.35
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 6730.35-2016 | Iron ores - Determination of copper content - Oxalic acid bis-cyclohexylidene hydragide (cuprizone) spectrophotometric method | current edition | Current |
| GB/T 6730.35-1986 | Iron ores - Determination of copper content - Oxalic acid bis-cyclohexylidene hydragide (cuprizone) spectrophotometric method | previous edition | Superseded |
This page sells the current edition, GB/T 6730.35-2016. Earlier editions are listed for reference only.
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Related Standards
GB/T 6730.36-2016 — Iron ores -- Determination of copper content -- Flame atomic absorption spectrometric method
GB/T 6730.34-1986 — Methods for chemical analysis of iron ores. The pyrocatechol violet-cetyl trimethylamine bromide photometric method for the determination of tin content
GB/T 6730.36-1986 — Methods for chemical analysis of iron ores. The flame atomic absorption spectrophotometric method for the determination of copper content
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