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YS/T 575.8-2007 English PDF

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US$199.00 · In stock
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YS/T 575.8-2007: Methods for chemical analysis of bauxite. Part 8: Determination of magnesium oxide content. Flame atomic absorption spectrophotometric method
Status: Valid

YS/T 575.8: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 575.8-2007	199	Add to Cart	3 days	Methods for chemical analysis of bauxite. Part 8: Determination of magnesium oxide content. Flame atomic absorption spectrophotometric method	Valid
YS/T 575.8-2006	279	Add to Cart	3 days	Methods for chemical analysis of bauxite. Determination of magnesium oxide content. Flame atomic absorption spectrophotometric method	Obsolete

Similar standards

YS/T 575.22 SN/T 3510 GB/T 8152.1 YS/T 575.27 YS/T 575.7 YS/T 575.14

Basic data

Standard ID: YS/T 575.8-2007 (YS/T575.8-2007)
Description (Translated English): Methods for chemical analysis of bauxite. Part 8: Determination of magnesium oxide content. Flame atomic absorption spectrophotometric method
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: D42
Classification of International Standard: 71.100.10
Word Count Estimation: 6,657
Date of Issue: 2007-11-14
Date of Implementation: 2008-05-01
Older Standard (superseded by this standard): YS/T 575.8-2006
Regulation (derived from): NDRC Notice No. 77 of 2007
Issuing agency(ies): National Development and Reform Commission
Summary: This standard specifies the bauxite Determination of magnesium oxide content. This standard applies to bauxite magnesium oxide content. Measuring range: 0. 03% to 2. 00%.

YS/T 575.8-2007: Methods for chemical analysis of bauxite. Part 8: Determination of magnesium oxide content. Flame atomic absorption spectrophotometric method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for chemical analysis of bauxite.Part 8. Determination of magnesium oxide content.Flame atomic absorption spectrophotometric method ICS 71.100.10 Q52 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 575.8-2006 Methods for chemical analysis of bauxite - Part 8. Determination of magnesium oxide content Flame Atomic Absorption Spectrometry Posted 2007-11-14 2008-05-01 implementation National Development and Reform Commission issued

Foreword

YS/T 575-2007 "chemical analysis of bauxite -" Is the YS/T 575-2006 (formerly GB/T 3257-1999) amendments A total of 24 parts. --- Part 1. aluminum oxide content - EDTA titration --- Part 2. silica content - Gravimetric - molybdenum blue spectrophotometry --- Part 3. Determination of silica content molybdenum blue photometric --- Part 4. iron oxide content - Potassium dichromate titration --- Part 5. Determination of iron oxide content phenanthroline spectrophotometry --- Part 6. Determination of titanium dioxide content di Zhao DAM spectrophotometry --- Part 7. calcium oxide content - Flame Atomic Absorption Spectrometry --- Part 8. magnesium oxide content - Flame Atomic Absorption Spectrometry --- Part 9. potassium hydroxide, sodium oxide content - Flame Atomic Absorption Spectrometry --- Part 10. Determination of manganese oxide content by flame atomic absorption spectrometry --- Part 11. chromium oxide content - Flame Atomic Absorption Spectrometry --- Part 12. Determination of vanadium pentoxide content of benzoyl phenylhydroxylamine photometric method --- Part 13. Determination of zinc content by flame atomic absorption spectrometry --- Part 14. Determination of total rare earth oxide Tribromoarsenazo spectrophotometry --- Part 15. Determination of gallium oxide content of rhodamine B extraction spectrophotometry --- Part 16. Determination of phosphorus pentoxide molybdenum blue photometric --- Part 17. Determination of sulfur content - Combustion - iodometric method --- Part 18. Determination of total carbon content - Combustion - non-aqueous titration --- Part 19. Determination of burning weight reduction method --- Part 20. pre-dried sample preparation --- Part 21. Determination of organic carbon titration --- Part 22. Analysis of samples moisture intrudes content - Gravimetric method --- Part 23. Determination of the chemical composition of the X-ray fluorescence spectrometry --- Part 24. Determination of carbon and sulfur content infrared absorption method This section section 8. The partial replacement of YS/T 575.8-2006 (formerly GB/T 3257.8-1999). This section is amended to YS/T 575.8-2006, compared with YS/T 575.8-2006, the main changes are as follows. --- The drying temperature of the sample unified 110 ℃ ± 5 ℃; --- Increased precision. The non-ferrous metal part by the National Standardization Technical Committee and centralized. This part of the Aluminum Corporation of China Zhengzhou Research Institute is responsible for drafting. This section drafted by the Aluminum Corporation of China Shandong Branch. The main drafters of this section. Qi Yanli. The non-ferrous metal part by the National Standardization Technical Committee responsible for the interpretation. This part of the standard replaces the previous editions are. --- YS/T 575.8-2006 (formerly GB/T 3257.8-1999). Methods for chemical analysis of bauxite - Part 8. Determination of magnesium oxide content Flame Atomic Absorption Spectrometry

1 Scope

This section provides the determination of MgO content in bauxite. This section applies to the determination of MgO content in bauxite. Measuring range. 0.03% to 2.00%.

2 Method summary

Melted sample with sodium hydroxide to after hydrochloric acid, acetylene - air flame atomic absorption spectrophotometry amount spectrophotometric determination of magnesium oxide. Interference alumina, silica, titania and the like on the determination, with the elimination of strontium chloride.

3 Reagents

3.1 sodium hydroxide, pure class distinctions. 3.2 hydrochloric acid (ρ1.19g/mL), pure class distinctions. 3.3 hydrochloric acid (1 + 1), pure class distinctions. 3.4 hydrochloric acid (1 + 49), pure class distinctions. 3.5 strontium chloride (150g/L), pure class distinctions. NOTE. strontium chloride chemically pure purification method. Weigh chemically pure strontium chloride (SrCl2 · 6H2O) 500g, into 1000mL graduated beaker. Add 200mL Water, placed on a hot plate heated to dissolved. Heating was continued, and concentrated to a total volume of 400mL. Remove the beaker was cooled to about 50 ℃ in the cold water bath. Plus ethanol 600mL to 700mL, stirred for 10min, still 10min. Filtration separation to nearly dry. The precipitate was back in the beaker, add dry wine Fine washed several times. The precipitate was placed on a clean filter paper, at 35 ℃ in the dry. 3.6 magnesium oxide standard stock solution. Accurately weigh 1.000g reference magnesium oxide (pre-ignition at 800 ℃ to constant weight) in 100mL beaker, Plus a small amount of water, hydrochloric acid dissolved in 30mL (3mol/L). Moved into 1L volumetric flask, dilute with water to volume, and mix. This oxygen-containing liquid 1mL Magnesium 1.000mg. 3.7 magnesium standard solution. dispensing 10mL magnesium oxide standard stock solution (3.6), in 1000mL volumetric flask. Hydrochloric acid (3.3) 4.5mL, dilute with water to volume, and mix. This magnesium-containing solution 1mL 0.01mg.

4 Instrument

4.1 Flame atomic absorption spectrophotometer, with a magnesium hollow cathode lamp. Who meet the following indicators atomic absorption spectrophotometer can be used. Low sensitivity. absorbance of four concentrations of the standard arithmetic highest concentration of the standard should not be less than 0.25. Linear calibration curve. four standard arithmetic concentration of the standard, the two highest concentrations of the difference between the absorbance of the standard solution is not to be less than the minimum 0.7 times the concentration of the standard solution with zero concentration of the solution absorbance values. Minimum stability. the calibration curve in the highest concentration of the standard solution with zero concentration of the standard multiple measurements obtained by absorbance, relative The coefficient of variation in the average absorbance of the highest concentration of the standard solution should not exceed 1.5% and 0.6%, respectively. 4.2 silver crucible. 30mL.

5 Sample

The sample was ground with a mortar through 74μm sieve, the sample is placed in a good research at 110 ℃ ± 5 ℃ oven drying 2h, placed in a desiccator, cooled ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of YS/T 575.8-2007_English be delivered?

Answer: Upon your order, we will start to translate YS/T 575.8-2007_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of YS/T 575.8-2007_English with my colleagues?

Answer: Yes. The purchased PDF of YS/T 575.8-2007_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version YS/T 575.8-2007?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version YS/T 575.8-2007 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.