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GB/T 14849.7-2015 English PDF

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US$149.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 14849.7-2015: Methods for chemical analysis of silicon metal -- Part 7: Determination of phosphorus content -- Phosphorus molybdenum blue spectrophotometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14849.7-2015	149	Add to Cart	3 days	Methods for chemical analysis of silicon metal -- Part 7: Determination of phosphorus content -- Phosphorus molybdenum blue spectrophotometry	Valid

Similar standards

GB/T 20975.1 GB/T 14849.5 GB/T 14849.4 GB/T 14849.3 GB/T 14849.1 GB/T 14849.11

Basic data

Standard ID: GB/T 14849.7-2015 (GB/T14849.7-2015)
Description (Translated English): Methods for chemical analysis of silicon metal -- Part 7: Determination of phosphorus content -- Phosphorus molybdenum blue spectrophotometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H12
Classification of International Standard: 77.120.10
Word Count Estimation: 7,723
Date of Issue: 2015-09-11
Date of Implementation: 2016-06-01
Quoted Standard: GB/T 6682; GB/T 8170
Regulation (derived from): National Standard Announcement 2015 No.25
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 method for the determination of phosphorus content in Silicon. This section applies to the determination of phosphorus content in the silicon industry, the measurement range (mass fraction): 0.0010% to 0.30%.

GB/T 14849.7-2015: Methods for chemical analysis of silicon metal -- Part 7: Determination of phosphorus content -- Phosphorus molybdenum blue spectrophotometry

---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 silicon metal Part 7. Detemination of phosphorus content Phosphorus molybdenum blue spectrophotometry ICS 77.120.10 H12 National Standards of People's Republic of China The method of chemical analysis of silicon Part 7. Determination of phosphorus content Phosphorus molybdenum blue spectrophotometry Part 7. Deteminationofphosphoruscontent- Issued on. 2015-09-11 2016-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 14849 "industrial silicon chemical analysis method" is divided into 11 parts. --- Part 1. Determination of iron content 1,10 phenanthroline spectrophotometry; --- Part 2. Determination of aluminum content of chromium Azure -S spectrophotometry; --- Part 3. Determination of calcium content by flame atomic absorption spectrometry, spectrophotometry Chlorophonazo Ⅰ; --- Part 4. Determination of impurity elements inductor coupled plasma atomic emission spectrometry; --- Part 5. Determination of impurity elements in the X-ray fluorescence spectrometry; --- Part 6. Determination of carbon content by infrared absorption method; --- Part 7. Determination of phosphorus content of phosphorus molybdenum blue spectrophotometric method; --- Part 8. Determination of copper content atomic absorption spectrometry; --- Part 9. Determination of titanium content security for DAM spectrophotometry; --- Part 10. Determination of mercury content by hydride generation - atomic fluorescence spectrometry; --- Part 11. Determination of hexavalent chromium content of diphenyl hydrazine spectrophotometry. This section GB/T 14849 Part 7. This section drafted in accordance with GB/T 1.1-2009 given rules. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is responsible for drafting unit. Kunming Metallurgy Research Institute. Participated in the drafting of this section. CIQ Yunnan, Kunming Metallurgical Institute New Materials Co., Ltd., Zhejiang Sheng silicon industry have Ltd., Yunnan Yongchang Silicon Industry Co., Ltd., Tongzhou Standards Technical Services Co., Aluminum Corporation of China Zhengzhou Research Institute. The main drafters of this section. Zhaode Ping, Yang Yi, Teng Yajun, An Zhongqing, Liuying Bo, Zhou Jie, to Portland, Maqi Kun, Huzhi Tao, Nie Changhong, Xue Ning, Zhou Ya, Richard Li, Zhao, for Yun Zhou, Zhang Yunhui, Cheng heap stronger, less Tan Ji, Tang Fei, Wang Xuexia. The method of chemical analysis of silicon Part 7. Determination of phosphorus content Phosphorus molybdenum blue spectrophotometry Warnings. Reagents used in this test method is corrosive, be careful when operating! As splashed on the skin should immediately wash with water, Yan In severe cases should be treated immediately.

1 Scope

This section GB/T 14849 specifies the method for determination of phosphorus content in the silicon industry. This section applies to the determination of phosphorus content in the silicon industry, measurement range (mass fraction). 0.0010% to 0.30%.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment

3 Method summary

Samples with hydrofluoric acid, nitric acid dissolution, heightening acid and evaporated to remove smoke silicon and fluorine, phosphorus oxidized to phosphoric acid, ascorbic acid solution Iron (Ⅲ) reduction of iron (Ⅱ), ammonium molybdate - hydrazine sulfate color liquid form phosphomolybdic blue, measuring absorbance at 825nm wavelength.

4 Reagents

Unless otherwise indicated, the use of analytical reagent only recognized in the analysis; the water is distilled or deionized water or equivalent purity, Shall comply with GB/T 6682's. 4.1 nitric acid (ρ = 1.42g/mL). 4.2 sulfate (ρ = 1.84g/mL). 4.3 Hydrofluoric acid (ρ = 1.15g/mL). 4.4 perchloric acid (ρ = 1.67g/mL). 4.5 nitric acid (11). 4.6 sulfate (11). 4.7 hydrazine sulfate solution (15g/L). 4.8 ascorbic acid solution (50g/L), the time is now equipped with. 4.9 ammonium molybdate solution. Weigh 200g ammonium molybdate was dissolved in 200mL of water, 700mL was added sulfuric acid (4.6), cooled to room temperature, diluted with water Diluted to 1000mL, and mix. Toner solution was 4.10. Pipette 10mL hydrazine sulfate solution (4.7), 25mL ammonium molybdate solution (4.9) and 65mL of water, and mix with a time of Now equipped. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 14849.7-2015_English be delivered?

Answer: Upon your order, we will start to translate GB/T 14849.7-2015_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 14849.7-2015_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 14849.7-2015_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.