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GB/T 23523-2009 English PDF

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US$239.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 23523-2009: Determination of germanium content in germanium renewable raw materials
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23523-2009	239	Add to Cart	2 days	Determination of germanium content in germanium renewable raw materials	Obsolete

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Basic data

Standard ID: GB/T 23523-2009 (GB/T23523-2009)
Description (Translated English): Determination of germanium content in germanium renewable raw materials
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H66
Classification of International Standard: 77.120.99
Word Count Estimation: 6,676
Date of Issue: 2009-04-08
Date of Implementation: 2010-02-01
Regulation (derived from): National Standard Approval Announcement 2009 No.4 (Total No.144)
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 germanium in germanium content of renewable raw materials. This standard applies to the determination of germanium in renewable raw germanium. Measuring range: 1% to 99%.

GB/T 23523-2009: Determination of germanium content in germanium renewable raw materials

---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.
Determination of germanium content in germanium renewable raw materials ICS 77.120.99 H66 National Standards of People's Republic of China Determination of germanium in germanium raw material regeneration Posted 2009-04-08 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard proposed by China Nonferrous Metals Industry Association. This standard Nonferrous Metals by the National Standardization Technical Committee. This standard drafting of the main unit. Yunnan Lincang Xinyuan Germanium Industry Co., Ltd., Nanjing Germanium Factory Co., Ltd. Participated in the drafting of this standard. Huaihua City, Hong Jiang Hengchang Germanium Co., Ltd., Beijing Jinghui States Infrared Optical Technology Co., Ltd., Shenzhen Shenzhen Lingnan Shaoguan smelter. Drafters of this standard. East Bowen, Li Hecheng, universal Kun, Zheng Hong, Meng toward the high, Sun Yan, Wang Jian. Determination of germanium in germanium raw material regeneration

1 Scope

This standard specifies the method for determination of germanium in the germanium content of renewable raw materials. This standard is applicable to the determination of germanium in renewable raw materials germanium. Measurement range. from 1% to 99%.

2 principle of the method

Sample with FeCl3 or H2O2 peroxide, hydrochloric acid distillation separation of germanium in 3mol/L phosphate and 4.5mol/L HCl medium to 0.35mol/L sodium hypophosphite reduced to the Ge4 + Ge2 +, using starch solution as indicator below 20 ℃, with potassium iodate standard solution Titration.

3 Reagents

Unless otherwise stated, only confirmed in the analysis of analytical grade reagents and distilled water or equivalent purity. 3.1 potassium iodide (KI). 3.2 anhydrous sodium carbonate (Na2CO3). 3.3 Sodium hydroxide (NaOH). 3.4 hypophosphite (NaH2PO2 · H2O). 3.5 ferric chloride (FeCl3 · 6H2O). 3.6 hydrochloride (ρ1.19g/mL). 3.7 phosphoric acid (ρ1.69g/mL). 3.8 Hydrogen peroxide (30%). 3.9 HCl (1 + 1). 3.10 saturated sodium bicarbonate solution. 3.11 starch solution (5g/L). 3.12 potassium iodate standard solution Ⅰ Weigh 1.0000g pre-drying to constant weight basis KIO3 at 130 ℃ in 400mL beaker. Potassium iodide was added 20g (3.1), 0.5g of anhydrous sodium carbonate (3.2), 200mL water and stir until completely dissolved and transferred to 1000mL volumetric flask with water to volume, mix Uniform, placed 24h. Ba concentration (1/6KIO3) was 0.02804mol/L. 3.13 potassium iodate standard solution Ⅱ Weigh 3.5667g pre-drying to constant weight basis KIO3 at 130 ℃ in 400mL beaker, add 40g potassium iodide (3.1), 1.0g of anhydrous sodium carbonate (3.2), 200mL of water, stirring until completely dissolved, transferred to 1000mL volumetric flask to volume with water, mix Uniform, placed 24h, the concentration of Ba (1/6KIO3) of 0.1000mol/L. Step 4 Analysis Figure 1 shows the ready distillation system, wherein the distillation bottles 300mL flasks Ⅰ, receiving bottles 500mL flasks Ⅱ, to be filled 50mL of water and 7g sodium hypophosphite (3.4), a condenser and a glass condenser 200mL of snake. 4.1 Sample The samples were prepared over 0.125mm (120 mesh) sieve and dried at 105 ℃ to constant weight, the simultaneous determination of the moisture. 4.2 Determination of the number of Independently measured three times and averaged. ......

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Question 1: How long will the true-PDF of GB/T 23523-2009_English be delivered?

Answer: Upon your order, we will start to translate GB/T 23523-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 2 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 23523-2009_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 23523-2009_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.