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GB/T 4103.7-2012 English PDF

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Q: Should I purchase the latest version GB/T 4103.7-2012?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4103.7-2012 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.

US$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 4103.7-2012: Methods for chemical analysis of lead and lead alloys -- Part 7: Determination of selenium content
Status: Valid

GB/T 4103.7: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4103.7-2012	169	Add to Cart	3 days	Methods for chemical analysis of lead and lead alloys -- Part 7: Determination of selenium content	Valid
GB/T 4103.7-2000	199	Add to Cart	2 days	Methods for chemical analysis of lead and lead alloys Determination of selenium content	Obsolete
GB/T 4103.7-1983	RFQ	ASK	3 days	Methods for chemical analysis of lead-base alloys--The potassium iodide photometric method for the determination of bismuth content	Obsolete

Similar standards

GB/T 3884.2 GB/T 3884.1 GB/T 4103.14 GB/T 4103.1 GB/T 4103.12 GB/T 4103.11

Basic data

Standard ID: GB/T 4103.7-2012 (GB/T4103.7-2012)
Description (Translated English): Methods for chemical analysis of lead and lead alloys -- Part 7: Determination of selenium content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.60
Word Count Estimation: 7,754
Older Standard (superseded by this standard): GB/T 4103.7-2000
Quoted Standard: GB/T 6682; GB/T 12806; GB/T 12808; GB/T 12809; GB/T 12810
Regulation (derived from): National Standards Bulletin No. 41 of 2012
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 lead and lead alloys Determination of Selenium. This section applies to lead and lead alloys of selenium content.

GB/T 4103.7-2012: Methods for chemical analysis of lead and lead alloys -- Part 7: Determination of selenium content

---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.
ICS77.120.60 H13 National Standards of People's Republic of China Replacing GB/T 4103.7-2000 Lead and lead alloys - Analysis Part 7. Determination of the amount of selenium Part 7. Determinationofseleniumcontent Issued on. 2013-10-01 2012-12-31 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 4103 "Methods for chemical analysis of lead and lead alloys" is divided into 16 parts. --- Part 1. Determination of tin content; --- Part 2. Determination of antimony content; --- Part 3. Determination of copper content; --- Part 4. Determination of iron content; --- Part 5. Determination of bismuth content; --- Part 6. Determination of arsenic content; --- Part 7. Determination of the amount of selenium; --- Part 8. Determination of tellurium content; --- Part 9. Determination of calcium; --- Part 10. Determination of the amount of silver; --- Part 11. Determination of zinc content; --- Part 12. Determination of thallium content; --- Part 13. Determination of aluminum content; --- Part 14. Determination of cadmium content by flame atomic absorption spectrometry; --- Part 15. Determination of nickel content by flame atomic absorption spectrometry; --- Part 16. copper, silver, bismuth, arsenic, antimony, tin, zinc contents Optical emission spectroscopy. This is Part 7 GB/T 4103's. This Part replaces GB/T 4103.7-2000 "of lead and lead alloys Determination of selenium content", and GB/T 4103.7- Compared to 2000, the main changes are as follows. --- Canceled polarography by hydride generation - atomic fluorescence spectrometry; --- Measured by the scope of 0.0050 percent to 0.10 percent to 0.0050% to 0.06%; --- Supplementary method to dissolve the sample of lead-antimony alloy; --- Supplementary terms of precision. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is responsible for drafting unit. Zhuzhou Smelter Group Co., Ltd., Beijing Mining Research Institute, Shaanxi Dongling Smelting Co., Ltd., White Silver colored copper Northwest Limited. Participated in the drafting of this section. Beijing Mining Research Institute, People's Republic of China Liaoning Entry Inspection and Quarantine Bureau, Zhuzhou Smelter Group CO., LTD. The main drafters of this section. Dian Chen Geng, Yuan Yuxia, Ma Li, Li Yan, Dong Xiuwen, Xiao Juan, Xie Xiqing. This Part replaces the previous editions are. --- GB/T 4103.7-2000; --- GB/T 4103.10-1983. Lead and lead alloys - Analysis Part 7. Determination of the amount of selenium

1 Scope

This section GB/T 4103 provisions of the determination of lead and lead alloys of selenium content. This section applies to the determination of lead and lead alloy content of selenium.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 6682 analytical laboratory use specifications and test methods (ISO 3696) GB/T 12806 laboratory glassware single marking flask (ISO 1042) GB/T 12808 laboratory glassware single marking pipette (ISO 648) GB/T 12809 Laboratory glassware Glass Container design and construction principles (ISO 384) GB/T 12810 laboratory glassware gauge capacity calibration and use (ISO 4787)

3 General

3.1 Unless otherwise stated, the use of analytical reagent only recognized in the analysis; the water is distilled or deionized water or equivalent purity, Shall comply with the provisions of GB/T 6682's. 3.2 instruments shall be within the test cycle, the performance indicators should meet the technical parameters required for verification; glass containers GB/T 12808, GB/T 12809, GB/T 12806 specified in Class A, with reference to the specific use requirements GB/T 12810 in. 4 Hydride Generation - Atomic Fluorescence Spectrometry 4.1 Determination of Range This method is applicable to the determination of lead ingots and special hard lead-antimony alloy of selenium content was measured in the range of 0.0050% to 0.060% (mass fraction). 4.2 Principle Sample with nitric acid - tartaric acid dissolved, add sulfuric acid lead to lead sulfate precipitation in hydrochloric acid medium, selenium, potassium borohydride is reduced to selenium. Hydride with argon gas into the quartz furnace atomizer, the fluorescence intensity was measured selenium on atomic fluorescence spectrometer. 4.3 Reagents 4.3.1 tartaric acid. 4.3.2 nitrate (ρ1.42g/mL), pure class distinctions. 4.3.3 hydrochloric acid (ρ1.19g/mL), pure class distinctions. 4.3.4 nitric acid (12). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 4103.7-2012_English be delivered?

Answer: Upon your order, we will start to translate GB/T 4103.7-2012_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 4103.7-2012_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 4103.7-2012_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.

Question 5: Should I purchase the latest version GB/T 4103.7-2012?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4103.7-2012 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.