GB/T 7731.8-2008 English PDFUS$229.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 7731.8-2008: Ferrotungsten -- Determination of antimony content -- The tetraethylrhodamine photometric method and inductively coupled plasma-atomic emission spectrometry Status: Valid GB/T 7731.8: Historical versions
Basic dataStandard ID: GB/T 7731.8-2008 (GB/T7731.8-2008)Description (Translated English): Ferrotungsten -- Determination of antimony content -- The tetraethylrhodamine photometric method and inductively coupled plasma-atomic emission spectrometry Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H11 Classification of International Standard: 77.100 Word Count Estimation: 10,125 Date of Issue: 2008-08-19 Date of Implementation: 2009-04-01 Older Standard (superseded by this standard): GB/T 7731.8-1987 Quoted Standard: GB/T 4010 Regulation (derived from): National Standard Approval Announcement 2008 No.14 (Total No.127) 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 the amount of tungsten iron antimony with rhodamine B spectrometry method and inductively coupled plasma atomic emission. This section applies to the determination of iron in tungsten and antimony content. Rhodamine B spectrophotometric measurement range (mass fraction): 0. 010 %-0. 060%, inductively coupled plasma atomic emission spectrometry range (mass fraction): 0. 010% to 0. 15 %. GB/T 7731.8-2008: Ferrotungsten -- Determination of antimony content -- The tetraethylrhodamine photometric method and inductively coupled plasma-atomic emission spectrometry---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. Ferrotungsten. Determination of antimony content. The tetraethylrhodamine photometrie method and inductively coupled plasma-atomic emission spectrometry ICS 77.100 H11 National Standards of People's Republic of China Replacing GB/T 7731.8-1987 Determination of tungsten, antimony content of iron Rhodamine B photometric method and inductively coupled plasma Atomic Emission Spectrometry Posted 2008-08-19 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis section GB/T 7731 is "spectrophotometric determination of antimony content of tungsten iron chemical analysis of Rhodamine B" of the GB/T 7731.8-1987 Amendments, including two analytical methods Rhodamine B photometric method and inductively coupled plasma atomic emission spectrometry. This Part replaces GB/T 7731.8-1987. This portion of the GB/T 7731.8-1987 comparison, the main changes are as follows. --- Rhodamine B photometric standard text written in a standardized format; --- Increased by inductively coupled plasma atomic emission spectrometry. Appendix A of this section is an informative annex. This part is proposed by the China Iron and Steel Association. This part of pig iron and ferroalloy by the National Standardization Technical Committee. This section is drafted. Sinosteel Jilin Ferroalloy Co., Ltd. The main drafters of this section. phosphorus, copper, Zhang Yunpeng, Han Yingqi, Li Cai. This part of the standard replaces the previous editions are. --- GB/T 7731.8-1987. Determination of tungsten, antimony content of iron Rhodamine B photometric method and inductively coupled plasma Atomic Emission Spectrometry Warning. Use of practical experience GB/T 7731 this part of the staff should have regular laboratory work. This section does not indicate all available Energy security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.1 ScopeThis section GB/T 7731 specifies the determination of Rhodamine B photometric method and inductively coupled plasma atomic emission spectrometry tungsten iron The amount of antimony. This section applies to the determination of tungsten iron antimony content. Rhodamine B spectrophotometric measurement range (mass fraction). 0.010% - 0.060%; Inductively coupled plasma atomic emission spectrometry range (mass fraction). 0.010% to 0.15%.2 Normative referencesThe following documents contain provisions which, through reference to GB/T 7731 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 4010 alloy chemical analysis and preparation of samples 3 Method One. Rhodamine B photometric 3.1 Principle Sample to fusion with sodium peroxide, water leaching, containing tartaric acid solution of sulfuric acid, hydrogen sulfide and antimony makes copper, antimony co-precipitation, Separation, precipitation with sulfuric acid and nitric acid, potassium permanganate and manganese sulfate was added to make a total antimony and manganese dioxide precipitate isolated by filtration, precipitated sulfur Acid and hydrogen peroxide dissolved in sulfuric acid so that cerium oxide, antimony after extraction with isopropyl ether, Jialuodanming B, so that antimony hair color, measured at 550nm wavelength Absorbance. 3.2 Reagents and materials Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water. 3.2.1 sodium peroxide, solid. 3.2.2 anhydrous sodium carbonate solids. 3.2.3 tartaric, solid. 3.2.4 hydrochloric acid, ρ1.19g/mL. 3.2.5 nitrate, ρ1.42g/mL. 3.2.6 sulfuric acid, ρ1.84g/mL. 3.2.7 ammonium hydroxide, ρ0.90g/mL. 3.2.8 hydrochloric acid, 1 + 1. 3.2.9 nitric acid, 1 + 1. 3.2.10 sulfuric acid, 1 + 1. 3.2.11 sulfuric acid, 1 + 2. 3.2.12 sulfuric acid - hydrogen peroxide mixture by 100mL sulfuric acid (1 + 6) and 2mL mixing hydrogen peroxide preparation. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 7731.8-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 7731.8-2008_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 GB/T 7731.8-2008_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 7731.8-2008_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+ countriesQuestion 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 GB/T 7731.8-2008?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7731.8-2008 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. |
