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GB/T 6150.5-2008: Methods for chemical analysis of tungsten concentrates -- Determination of calcium content -- EDTA volumetric method and flame atomic absorption spectrometric method
Status: Valid GB/T 6150.5: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6150.5-2008 | English | 189 |
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Methods for chemical analysis of tungsten concentrates -- Determination of calcium content -- EDTA volumetric method and flame atomic absorption spectrometric method
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GB/T 6150.5-2008
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| GB/T 6150.5-1985 | English | 199 |
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Methods for chemical analysis of tungsten concentrates--The barium sulfate gravimetric method for the determination of sulfur content
| Obsolete |
GB/T 6150.5-1985
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Basic data | Standard ID | GB/T 6150.5-2008 (GB/T6150.5-2008) | | Description (Translated English) | Methods for chemical analysis of tungsten concentrates -- Determination of calcium content -- EDTA volumetric method and flame atomic absorption spectrometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H63 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 8,823 | | Date of Issue | 2008-03-31 | | Date of Implementation | 2008-09-01 | | Older Standard (superseded by this standard) | GB/T 6150.6-1985; GB/T 6150.7-1985 | | Regulation (derived from) | National Standard Approval Release Bulletin No. 5 of 2008 (No. 118) | | 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 | | Summary | This standard specifies the determination of tungsten concentrate in calcium content. This method is applicable to the determination of tungsten concentrate in calcium content. Measuring range: more than 1% to 20%. | GB/T 6150.5-2008: Methods for chemical analysis of tungsten concentrates -- Determination of calcium content -- EDTA volumetric method and flame atomic absorption spectrometric method
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Methods for chemical analysis of tungsten concentrates. Determination of calcium content. EDTA volumetric method and flame atomic absorption spectrometric method
ICS 77.120.99
H63
National Standards of People's Republic of China
Replacing GB/T 6150.6-1985, GB/T 6150.7-1985
Methods for chemical analysis of tungsten concentrates
Determination of calcium
EDTA volumetric method and flame atomic absorption spectrometry
Posted 2008-03-31
2008-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 6150 "Methods for chemical analysis of tungsten concentrates" is divided into 17 parts.
Determination of GB/T 6150.1 Methods for chemical analysis of tungsten concentrates of tungsten trioxide amount of ammonium tungstate burning gravimetric method
GB/T 6150.2 Methods for chemical analysis of tungsten concentrates - Determination of tin content of potassium iodate volumetric method and hydride generation atomic absorption spectrometry
GB/T 6150.3 Methods for chemical analysis of tungsten concentrates - Determination of phosphorus content of phosphorus molybdenum yellow spectrophotometry
Determination of GB/T 6150.4 Methods for chemical analysis of tungsten concentrates sulfur content of high frequency infrared absorption method
GB/T 6150.5 Methods for chemical analysis of tungsten concentrates - Determination of calcium content - EDTA volumetric method and flame atomic absorption spectrometry
GB/T 6150.6 Methods for chemical analysis of tungsten concentrates - Determination of hygroscopic water gravimetric method
GB/T 6150.7 Methods for chemical analysis of tungsten concentrates - Determination of the amount of tantalum and niobium plasma emission spectroscopy and spectrophotometry
GB/T 6150.8 Methods for chemical analysis of tungsten concentrates - Determination of molybdenum content - Thiocyanate spectrophotometric
GB/T 6150.9 Methods for chemical analysis of tungsten concentrates - Determination of copper content - Flame atomic absorption spectrometry
GB/T 6150.10 Methods for chemical analysis of tungsten concentrates - Determination of lead content by flame atomic absorption spectrometry
GB/T 6150.11 Methods for chemical analysis of tungsten concentrates of zinc content - Flame Atomic Absorption Spectrometry
GB/T 6150.12 Methods for chemical analysis of tungsten concentrates - Determination of silicon dioxide content and weight of molybdenum blue spectrophotometric method
Hydride atomic GB/T 6150.13 Methods for chemical analysis of tungsten concentrates the amount of arsenic absorption spectroscopy and spectroscopic DDTC-Ag
Spectrophotometry
GB/T 6150.14 Methods for chemical analysis of tungsten concentrates - Determination of manganese content of ammonium ferrous sulfate volumetric method and flame atomic absorption spectrometry
GB/T 6150.15 Methods for chemical analysis of tungsten concentrates bismuth content - Flame Atomic Absorption Spectrometry
GB/T 6150.16 Methods for chemical analysis of tungsten concentrates - Determination of iron content sulfonic acid spectrophotometry
Hydride atomic GB/T 6150.17 Methods for chemical analysis of tungsten concentrates antimony content absorption spectrometry
This is Part 5 GB/T 6150's.
This Part replaces GB /"chemical analysis of tungsten concentrates - Determination of calcium EDTA volumetric method" T 6150.6-1985 and
GB/T 6150.7-1985 "Methods for chemical analysis of tungsten concentrates atomic absorption spectrophotometry calcium."
This portion of the GB/T 6150.6-1985 and GB/T 6150.7-1985 compared to the main changes are as follows.
--- Determination of potassium pyrophosphate original molten sulfur changed - like phosphorus mixed acid soluble, precipitated calcium oxalate from the original burning calcium oxide
Instead perchloric acid - nitric acid mixture destroy filter paper;
--- Expanding the detection range;
--- Increased repeatability terms.
This part is proposed by the China Nonferrous Metals Industry Association.
The non-ferrous metal part by the National Standardization Technical Committee.
This section is Ganzhou Nonferrous Metallurgy Research Institute, China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting.
This section was drafted by Ganzhou Nonferrous Metallurgy Research Institute.
This section Zhuzhou Cemented Carbide Group Co., Ltd., Chongyi Zhangyuan Tungsten Co., Ltd. participated in the drafting.
The main drafters of this Part 1. Juran, Lai sword.
The main drafters of this section Method 2. Shijiang Hai, XU Chun before.
This part certifier. Chen Bao, Zou Rong, Wu Changping.
This part of the standard replaces the previous editions are.
--- GB/T 6150.6-1985, GB/T 6150.7-1985.
Methods for chemical analysis of tungsten concentrates
Determination of calcium
EDTA volumetric method and flame atomic absorption spectrometry
Method 1 EDTA volumetric method
1 Scope
This method specifies the method for the determination of tungsten concentrates in calcium content.
This method is suitable for the Determination of calcium content. Measurement range. more than 1% to 20%.
2 Method summary
Samples of sulfur - phosphorus mixed acid is dissolved, saturated ammonium oxalate solution leaching into calcium oxalate precipitate separated from tungsten, manganese, iron, etc., together with the filtered
Paper perchloric acid - nitric acid mixture to destroy the white smoke to take to make to dissolved in hydrochloric acid, triethanolamine masking residual iron and manganese, at a pH greater than
12.00 to calcein hundred miles phenolphthalein indicator solution titration with EDTA standard.
3 Reagents
Unless otherwise indicated, this part of the reagents used are in line with national standards or industry standard analytical reagent, the water are distilled water.
3.1 ammonium sulfate - sulfur - phosphorus mixed acid solution. 10g of ammonium sulfate dissolved in 40mL water, stirring constantly adding phosphoric acid 20mL, sulfur
Acid 40mL.
3.2 oxalate. inquiry into powder.
3.3 saturated ammonium oxalate solution. use after filtration.
3.4 ammonium oxalate washing solution (2g/L).
3.5 hydrochloride (ρ1.19g/mL).
3.6 hydrochloric acid solution (1 + 1).
3.7 ammonia solution (1 + 1).
3.8 perchloric acid - nitric acid mixed acid. perchloric acid 20mL, 80mL nitric acid mix.
3.9 Potassium hydroxide solution (150g/L).
3.10 triethanolamine (1 + 1).
3.11 mixed indicator. 0.10g calcein, 0.06g Barry phenolphthalein and potassium sulfate 10g mixed, ground evenly.
3.12 Calcium standard solution. Weigh 2.4972g by drying calcium carbonate (99.95%), placed in 250mL beaker, add 10mL
After hydrochloric acid solution (3.6) were dissolved by boiling 1min ~ 2min purge carbon dioxide, cooled and transferred to 1000mL volumetric flask, dilute to
Volume, and mix the solution of calcium 1.0 mg per ml.
3.13 disodium ethylenediamine tetraacetate (EDTA) standard solution.
3.13.1 preparation. Weigh 15gEDTA was dissolved in 200mL of hot water, filtered, diluted to 2000mL After cooling, mixing at a concentration from about
To 0.02mol/L.
3.13.2 Calibration. Pipette 10.00mL calcium standard solution (3.12) was placed in 300mL beaker, diluted with water to 100mL, according to the following
(5.4.4) performed.
According to formula (1) calculate the titer of EDTA standard solution of calcium.
T = ρ
1 × Vp
Vp 2
(1)
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