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GB/T 4372.7-2014 English PDF

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US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 4372.7-2014: Methods for chemical analysis of zine oxide produces by direct process -- Part 7: Determination of ferric oxide content -- Flame atomic absorption spectrometry method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4372.7-2014	139	Add to Cart	3 days	Methods for chemical analysis of zine oxide produces by direct process -- Part 7: Determination of ferric oxide content -- Flame atomic absorption spectrometry method	Valid

Similar standards

GB/T 3884.2 GB/T 3884.1 GB/T 4103.14 GB/T 4372.4 GB/T 4372.3 GB/T 4372.2

Basic data

Standard ID: GB/T 4372.7-2014 (GB/T4372.7-2014)
Description (Translated English): Methods for chemical analysis of zine oxide produces by direct process -- Part 7: Determination of ferric oxide content -- Flame atomic absorption spectrometry method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.60
Word Count Estimation: 6,649
Date of Issue: 12/5/2014
Date of Implementation: 8/1/2015
Regulation (derived from): Announcement of Newly Approved National Standards 2014 No. 27
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 determination of zinc oxide direct method of ferric oxide. This Standard is applicable to the determination of zinc oxide direct method in the amount of ferric oxide. Measurement range: 0. 010 to 0. 10%.

GB/T 4372.7-2014: Methods for chemical analysis of zine oxide produces by direct process -- Part 7: Determination of ferric oxide content -- Flame atomic absorption spectrometry 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 zine oxide produces by direct process.Part 7. Determinantion of ferric oxide content.Flame atomic absorption specrometry method ICS 77.120.60 H13 National Standards of People's Republic of China Zinc oxide direct method of chemical analysis methods Part 7. iron oxide contents - Flame Atomic Absorption Spectrometry Part 7. Determinantionofferricoxidecontent- Issued on. 2014-12-05 2015-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 4372 "Methods for chemical analysis of zinc oxide direct method" is divided into seven sections. --- Part 1. Determination of the amount of zinc oxide Na2EDTA titration; --- Part 2. Determination of the amount of lead oxide flame atomic absorption spectrometry; --- Part 3. copper oxide and cadmium oxide content - Flame atomic absorption spectrometry; --- Part 4. copper, lead, iron, cadmium and manganese content - Inductively coupled plasma atomic emission spectrometry; --- Part 5. Determination of manganese content by flame atomic absorption spectrometry; --- Part 6. zinc inspection; --- Part 7. Determination of ferric oxide by flame atomic absorption spectrometry amount. This section GB/T 74372 Part of. This section drafted in accordance with GB/T 1.1-2009 given rules. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is responsible for drafting unit. Outlet Hunan Nonferrous Metals Group Co., Ltd., Hunan Nonferrous Metal Research Institute. This section is drafted. Shuikoushan Hunan Nonferrous Metals Group Co., Ltd., Guangzhou Nonferrous Metal Research Institute, China Nonferrous mineral Guilin Quality Research Institute Co., Ltd., Hunan Nonferrous Metal Research Institute, Beijing General Research Institute of Mining and Metallurgy, Fangchenggang CIQ. The main drafters of this section. Luo Yongfeng, Zeng Guangming, Tan Qian Dai Fengying, Xujie Yu, Xiaoling, Wang Jiang Liang, Huang Zhi, Pangwen Lin, Yang Deli, Shen Lin, Xie Yu Group, Li Xiaoqin. Zinc oxide direct method of chemical analysis methods Part 7. iron oxide contents - Flame Atomic Absorption Spectrometry

1 Scope

GB/T 4372 provisions of this part of the determination of the direct method zinc oxide iron oxide content. This section applies to the determination of zinc oxide direct method of ferric oxide content. Measurement range. 0.010% to 0.10%.

2 Method summary

Samples with hydrochloric acid, nitric acid dissolved, evaporated to dryness, in dilute hydrochloric acid medium, using air - acetylene flame atomic absorption spectrometer wavelength 248.3nm measured absorbance of iron, the standard curve method to calculate the amount of ferric oxide.

3 Reagents

Unless otherwise indicated in the analysis using only confirmed for the gifted class pure reagents and water or an equivalent purity water. 3.1 nitric acid (ρ = 1.42g/mL). 3.2 hydrochloric acid (ρ = 1.19g/mL). 3.3 nitric acid (11). 3.4 nitric acid (13). 3.5 hydrochloride (11). 3.6 iron standard stock solution. Weigh 1.0000g metallic iron [metal wire (wFe≥99.9%) cut into small pieces into a dilute nitric acid (3.4) in Soak 1min ~ 2min, removed. Add anhydrous ethanol for 1min ~ 2min, removed immediately after repeated dry with filter paper weighed] set In 300mL beaker, was added 40mL of hydrochloric acid (3.5), low-temperature heating to dissolve completely, was added 10mL of nitric acid (3.3), evaporated to near cryogenic Dry, remove the cooling. Was added 20mL of hydrochloric acid (3.5), dissolved salts on low heat, after cooling transferred 1000mL volumetric flask. 400mL of hydrochloric acid (3.2), dilute to the mark and mix. 1mL solution containing 1mg iron. 3.7 iron standard solution. Pipette respectively 10.00mL iron standard stock solution (3.6) in 100mL flask, add 36mL hydrochloric acid (3.2), dilute to the mark and mix. This solution 1mL containing 100μg iron.

4 Instrument

Atomic absorption spectrometer, with iron hollow cathode lamp. Under optimum working conditions for those who can reach the following indicators can be used. Sensitivity. In line with the measurement sample solution matrix blank solution, the characteristic concentration of iron should not exceed 0.3μg/mL. Precision. standard solution measuring the absorbance of the highest concentration of 10 times, the standard deviation should not exceed the maximum concentration of the standard mean absorbance 0.5% of the luminosity; 10 measuring the absorbance of standard solutions with the lowest concentration (standard solution is not zero), and the standard deviation does not exceed the maximum concentration 0.5% of the mean absorbance of standard solution. Linear curve. The curve is divided into five sections according to concentration, than the difference between the absorbance of the absorbance difference between the highest and the lowest segment segment, ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 4372.7-2014_English be delivered?

Answer: Upon your order, we will start to translate GB/T 4372.7-2014_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 4372.7-2014_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 4372.7-2014_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.