HOME   Cart(0)   Quotation   About-Us Tax PDFs Standard-List Powered by Google www.ChineseStandard.net Database: 189760 (18 Jan 2025)

YS/T 509.5-2008 English PDF (YST509.5-2006)

YS/T 509.5-2008_English: PDF (YS/T509.5-2008)
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
YS/T 509.5-2008English160 Add to Cart 0--9 seconds. Auto-delivery Methods for chemical analysis of spodumene and lepidolite concentrates. Determination of ferric oxide content. O-phenanthroline photometric method and EDTA compleximetric method Valid YS/T 509.5-2008
YS/T 509.5-2006English199 Add to Cart 2 days [Need to translate] Methods for chemical analysis of spodumenite and lepidolite concentrates - The EDTA volumetric method for the determination of ferric oxide content Obsolete YS/T 509.5-2006


BASIC DATA
Standard ID YS/T 509.5-2008 (YS/T509.5-2008)
Description (Translated English) Methods for chemical analysis of spodumene and lepidolite concentrates. Determination of ferric oxide content. O-phenanthroline photometric method and EDTA compleximetric method
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H64
Classification of International Standard 77.120.99
Word Count Estimation 8,855
Date of Issue 2008-03-12
Date of Implementation 2008-09-01
Older Standard (superseded by this standard) YS/T 509.5-2006; YS/T 509.6-2006
Drafting Organization Xinjiang Lithium Salt Plant
Administrative Organization National Standardization Technical Committee of non-ferrous metals
Regulation (derived from) NDRC Notice No. 25 of 2008
Proposing organization National Nonferrous Metals Standardization Technical Committee
Issuing agency(ies) National Development and Reform Commission
Summary This standard specifies the spodumene, lepidolite concentrates of iron oxide content determination. This standard applies to spodumene, lepidolite concentrates of iron oxide content. Measuring range: 0. 10% 1. 00%.

BASIC DATA
Standard ID YS/T 509.5-2006 (YS/T509.5-2006)
Description (Translated English) Methods for chemical analysis of sqodumenite and lepidolite concentrates The EDTA volumetric method for the determination of ferric oxide content
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard D44
Classification of International Standard 77.120.99
Word Count Estimation 3,385
Date of Implementation 2006-10-11
Older Standard (superseded by this standard) GB/T 3885.5-1983
Regulation (derived from) ?Development and Reform Commission Announcement 2006 No.46; Development and Reform Commission Announcement 2008 No.25
Summary This standard applies to spodumene, determination of lepidolite concentrates of iron oxide. Measuring range: 1. 00 to 10. 00%. Compliance with this standard GB 1467-1978 "Methods for chemical analysis of metallurgical products standard General rules and regulations. "


YS/T 509.5-2008 YS NONFERROUS METALS INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.120.99 H 64 Replacing YS/T 509.5-2006, YS/T 509.6-2006 Methods for chemical analysis of spodumene and lepidolite concentrates - Determination of ferric oxide content - O-phenanthroline photometric method and EDTA compleximetric method ISSUED ON: MARCH 12, 2008 IMPLEMENTED ON: SEPTEMBER 1, 2008 Issued by: National Development and Reform Commission of China Table of Contents Foreword ... 3  Method 1: O-phenanthroline photometric method ... 5  1 Scope ... 5  2 Method summary ... 5  3 Reagents ... 5  4 Instruments ... 6  5 Specimen ... 6  6 Analysis steps ... 6  7 Calculation of analysis result ... 8  8 Precision ... 8  9 Quality assurance and control ... 9  Method 2: EDTA compleximetric method ... 9  10 Scope ... 9  11 Method summary ... 9  12 Reagents ... 9  13 Specimen ... 10  14 Analysis steps ... 11  15 Calculation of analysis result ... 11  16 Precision ... 12  17 Quality assurance and control ... 13  Methods for chemical analysis of spodumene and lepidolite concentrates - Determination of ferric oxide content - O-phenanthroline photometric method and EDTA compleximetric method Method 1: O-phenanthroline photometric method 1 Scope This Part specifies the determination methods for ferric oxide content in spodumene, lepidolite concentrates. This Part is applicable to the determination of ferric oxide content in spodumene, lepidolite concentrates. Determination range: 0.10%~1.00%. 2 Method summary The specimen is melted with potassium hydroxide. Use water to leach. Use hydrochloric acid to acidify. Use ascorbic acid to reduce ferric iron to divalent iron. At pH3~pH6, divalent iron forms orange-red complex with phenanthroline. At a wavelength of 506nm of the spectrophotometer, measure its absorbance. 3 Reagents Unless otherwise stated, only the confirmed analytically-pure reagents and distilled water or water of comparable purity are used in the analysis. 3.1 Potassium hydroxide. 3.2 Absolute ethanol. 3.3 Hydrochloric acid (1+1). 3.4 Hydrochloric acid (1+7). 3.5 Ammonium hydroxide (1+1). 6.3 Blank test Conduct blank test with test material. 6.4 Determination 6.4.1 Place the test material (6.1) in a 30mL silver crucible. Add 3 drops of absolute ethanol (3.2) to moisten. Add 5g of potassium hydroxide (3.1). Put the lid on the crucible and leave a little gap. Remove the moisture on an electric stove. Place in 600°C~650°C high temperature furnace to melt for 10min~15min. Take out. Cool. 6.4.2 Use filter paper to wipe the outer wall of the crucible. Put it in a 250mL beaker. Add 100mL of hot water. Cover the watch glass. Leach the melt. Add 35mL of hydrochloric acid (3.3) from the mouth of the beaker at a time. Shake immediately to totally acidify the solution. Use hot water to wash out the crucible. Boil the solution for 1min~2min. Cool to room temperature. Transfer into a 250mL volumetric flask. Use water to dilute to the graduation of scale. Mix well. Let it stand. Pipette 25.00mL of supernatant. Place it in a 100mL volumetric flask. 6.4.3 Add 5mL of ascorbic acid solution (3.7). Mix well. Add 2 drops of p- nitrophenol ethanol solution (3.11). Use ammonium hydroxide (3.5) to neutralize until the solution just turns yellow. Then use hydrochloric acid (3.4) to neutralize until the yellow color just disappears. Add 20mL of buffer solution (3.8). Mix well. Add 2.5mL of o-phenanthroline ethanol solution (3.6). Use water to dilute to the graduation of scale. Mix well. Let it stand for 15min. 6.4.4 Move part of the solution (6.4.3) into a 2cm cuvette. Take the blank of the accompanying specimen as a reference. At a wavelength of 506nm of the spectrophotometer, measure its absorbance. Find the corresponding amount of ferric oxide from the working curve. 6.5 Drawing of working curve 6.5.1 Pipette 0mL, 1.00mL, 2.00mL, 5.00mL, 7.00mL, 10.00mL, 12.00mL and 15.00mL of ferric oxide standard solution (3.10). Respectively put in a set of 100mL volumetric flasks. Add 1mL of hydrochloric acid (3.3). The rest follows the steps in 6.4.3. 6.5.2 Transfer part of the solution (6.5.1) into a 2cm cuvette. Take the accompanying reagent blank as a reference. At a wavelength of 506nm of the spectrophotometer, measure its absorbance. Use the amount of ferric oxide as the abscissa and absorbance as the ordinate to draw a working curve. 9 Quality assurance and control Use national standard samples or industry-standard samples (control samples can also be used if the two are not available) to check the validity of the analytical method standard weekly or every two weeks. When the process goes out of control, find out the cause, correct it, and recheck it. Method 2: EDTA compleximetric method 10 Scope This Part specifies the determination methods for ferric oxide content in spodumene, lepidolite concentrates. This Part is applicable to the determination of ferric oxide content in spodumene, lepidolite concentrates. Determination range: 1.00%~10.00%. 11 Method summary The specimen is melted with potassium hydroxide. Use water to leach. In an acidic solution of pH1.5~pH2.0, use sulfosalicylic acid as indicator. Use EDTA standard solution to titrate. Determine the content of ferric oxide. 12 Reagents Unless otherwise stated, only the confirmed analytically-pure reagents and distilled water or water of comparable purity are used in the analysis. 12.1 Potassium hydroxide. 12.2 Ammonium persulfate. 12.3 Absolute ethanol. 12.4 Hydrochloric acid (1+1). 12.5 Ammonium hydroxide (1+1). 12.6 Ferric oxide standard solution: Weigh 0.5000g of ferric oxide (above 99.9%) that has been pre-baked at 105°C~110°C for 2h and placed in a desiccator to cool to room temperature. Put it in a 250mL beaker. Add 30mL of hydrochloric acid (12.4). Cover the watch glass. Heat at low temperature to dissolve completely. Remove. Cool to room temperature. Transfer to 1000mL volumetric desiccator to cool to room temperature. 14 Analysis steps 14.1 Test material Weigh 0.50g of specimen, to the nearest of 0.0002g. 14.2 Number of determinations Make parallel determinations of two test materials. Take the average value. 14.3 Blank test Conduct blank test with test material. 14.4 Determination 14.4.1 Place the test material (14.1) in a 30mL silver crucible. Add 5 drops of absolute ethanol (12.3) to moisten. Add 5g of potassium hydroxide (12.1). Put the lid on the crucible and leave a little gap. Remove moisture on an electric stove. Place in 600°C~650°C high temperature furnace to melt for 10min~15min. Take out. Cool. 14.4.2 Use filter paper to wipe the outer wall of the crucible. Put it in a 250mL beaker. Cover the watch glass. Add 100mL of hot water from the mouth of the beaker. Leach the melt. Then add 35mL of hydrochloric acid (12.4) at a time. Immediately shake to acidify the solution. Use hot water to wash out the crucible. Boil the solution for 2min. Cool to room temperature. 14.4.3 Transfer the solution (14.4.2) into a 250mL volumetric flask. Use water to dilute to the graduation of scale. Mix well. Let it stand. 14.4.4 Pipette 50.00mL of supernatant (14.4.3). Put it in a 300mL Erlenmeyer flask. Add 0.1g of ammonium persulfate (12.2). Heat to slightly boil and keep it for 5min. Cool for a while. Add 6 drops of sulfosalicylic acid solution (12.8). Use ammonium hydroxide (12.5) to neutralize until the purple disappears and brownish red appears. Immediately use hydrochloric acid (12.4) to carefully neutralize until the purple color just appears and exceed by 4 drops. Control the temperature of the solution at about 60°C. Use EDTA standard solution (12.7) to slowly titrate until the purple color disappears as the end point. 15 Calculation of analysis result The mass fraction of ferric oxide, w, whose value is expressed in %, is ......

Similar standards: YS/T 509.10-2008  YS/T 509.11-2008  YS/T 509.2-2008  
Similar PDFs (Auto-delivered in 9 seconds): YS/T 509.5-2008  CFDA 123-2009  GB/T 2524-2019