GB/T 15076.14-2008 PDF EnglishUS$85.00 · In stock · Download in 9 seconds
GB/T 15076.14-2008: Methods for chemical analysis of tantalum and niobium -- Determination of oxygen content Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 15076.14: Historical versions
Similar standardsGB/T 15076.14-2008: Methods for chemical analysis of tantalum and niobium -- Determination of oxygen content---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT15076.14-2008 GB NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA ICS 77.120.99 H 14 Replacing GB/T 15076.14-1994 Methods for chemical analysis of tantalum and niobium - Determination of oxygen content ISSUED ON: MARCH 31, 2008 IMPLEMENTED ON: SEPTEMBER 1, 2008 Issued by: General Administration of Quality Supervision, Inspection and Quarantine of PRC; Standardization Administration of PRC. Table of ContentsForeword ... 3 1 Scope ... 6 2 Principle of the method ... 6 3 Materials ... 6 4 Instruments ... 6 5 Specimen ... 7 6 Analysis steps ... 7 7 Precision ... 8 8 Quality assurance and control ... 8ForewordGB/T 15076 Methods for chemical analysis of tantalum and niobium is divided into 16 parts: -- GB/T 15076.1 Methods for chemical analysis of tantalum and niobium - Part 1: Determination of tantalum content in niobium - Inductively coupled plasma atomic emission spectrometry -- GB/T 15076.2 Methods for chemical analysis of tantalum and niobium - Part 2: Determination of niobium content in tantalum - Inductively coupled plasma atomic emission spectrometry and stratigraphy gravimetry -- GB/T 15076.3 Methods for chemical analysis of tantalum and niobium - Part 3: Determination of copper content - Flame atomic absorption spectrometry -- GB/T 15076.4 Methods for chemical analysis of tantalum and niobium - Part 4: Determination of iron content - 1,10-Phenanthroline spectrophotometry -- GB/T 15076.5 Methods for chemical analysis of tantalum and niobium - Part 5: Determination of molybdenum and tungsten contents - Inductively coupled plasma atomic emission spectrometry -- GB/T 15076.6 Methods for chemical analysis of tantalum and niobium - Part 6: Determination of silicon content - Inductively coupled plasma atomic emission spectrometry -- GB/T 15076.7 Methods for chemical analysis of tantalum and niobium - Part 7: Determination of phosphorus content in niobium - 4-Formyloxy-pentyl ketone- [2] extraction separation phosphomolybdate blue spectrophotometry and inductively coupled plasma atomic emission spectrum -- GB/T 15076.8 Methods for chemical analysis of tantalum and niobium - Determination of carbon and sulphur contents -- GB/T 15076.9 Methods for chemical analysis of tantalum and niobium - Determination of iron, chromium, nickel, manganese, titanium, aluminum, copper, tin, lead and zirconium contents in tantalum -- GB/T 15076.10 Methods for chemical analysis of tantalum and niobium - Part 10: Determination of iron, nickel, chromium, titanium, zirconium, aluminum and manganese contents in niobium - Direct current arc atomic emission spectrometry Methods for chemical analysis of tantalum and niobium - Determination of oxygen content1 ScopeThis part specifies the method for determining the oxygen content in tantalum and niobium. This part is applicable to the determination of oxygen content in tantalum and niobium. Determination range: 0.005%~1.2%.2 Principle of the methodThe test specimen is placed in a high-purity graphite crucible under a purified helium/argon atmosphere, and melted at a high temperature with a low voltage and a large current, and the oxygen compounds are reduced and decomposed. The oxygen released from the sample combines with the carbon in the graphite crucible to form a mixture of carbon monoxide and carbon dioxide. The carbon monoxide is converted into carbon dioxide by rare earth copper oxide, and the generated carbon dioxide is detected in an infrared cell.3 Materials3.1 Helium: with a purity of greater than 99.99%. 3.2 Argon: with a purity of greater than 99.99%. 3.3 High-purity nickel foil or nickel capsule: the oxygen content is not more than 0.002%. 3.4 High-purity graphite crucible. 3.5 Standard substances: Appropriate standard substances shall be selected. In principle, the chemical composition of the standard substances shall be similar to that of the analyzed samples.4 InstrumentsPulse infrared oxygen analyzer: The instrument sensitivity is not less than 0.01 μg/g. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 15076.14-2008 be delivered?Answer: The full copy PDF of English version of GB/T 15076.14-2008 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 15076.14-2008_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 15076.14-2008_English will be deemed to be sold to your employer/organization who actually paid 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. www.ChineseStandard.us -- GB/T 15076.14-2008 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.Question 5: Should I purchase the latest version GB/T 15076.14-2008?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15076.14-2008 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.How to buy and download a true PDF of English version of GB/T 15076.14-2008?A step-by-step guide to download PDF of GB/T 15076.14-2008_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 15076.14-2008". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
