HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (25 Oct 2025)

YS/T 716.2-2009 English PDF

US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
YS/T 716.2-2009: Methods for chemical analysis of low grade blister. Part 2: The determination of gold and silver contents. Fire assaying method
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
YS/T 716.2-2009English209 Add to Cart 3 days [Need to translate] Methods for chemical analysis of low grade blister. Part 2: The determination of gold and silver contents. Fire assaying method   YS/T 716.2-2009

PDF similar to YS/T 716.2-2009


Standard similar to YS/T 716.2-2009

GB/T 3884.2   GB/T 3884.1   YS/T 710.6   YS/T 716.4   YS/T 716.5   YS/T 716.3   

Basic data

Standard ID YS/T 716.2-2009 (YS/T716.2-2009)
Description (Translated English) Methods for chemical analysis of low grade blister. Part 2: The determination of gold and silver contents. Fire assaying method
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H13
Classification of International Standard 77.040.30
Word Count Estimation 6,629
Date of Issue 2009-12-04
Date of Implementation 2010-06-01
Regulation (derived from) MIIT [2009] No. 66
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies: black copper gold and silver content determination. This standard applies to the gold and silver content of black copper measured. Measuring range: Au

YS/T 716.2-2009: Methods for chemical analysis of low grade blister. Part 2: The determination of gold and silver contents. Fire assaying 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 low grade blister.Part 2. The determination of gold and silver contents.Fire assaying method ICS 77.040.30 H13 People's Republic of China Nonferrous Metals Industry Standard Methods for chemical analysis of copper black Part 2. Determination of the amount of gold and silver fire assay Posted 2009-12-04 2010-06-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 716-2009 "chemical analysis of black copper" is divided into six parts. --- Part 1. Determination of copper content of sodium thiosulfate titration; --- Part 2. Determination of the amount of gold and silver fire assay; --- Part 3. Flame atomic bismuth, nickel, lead, antimony and zinc content absorption spectrometry; --- Part 4. Determination of arsenic content iodometry; --- Part 5. Determination of tin content potassium iodate titration; --- Part 6. arsenic, bismuth, nickel, lead, antimony, tin, zinc content - Inductively coupled plasma atomic emission spectrometry. This section YS/T Part 2 716. The non-ferrous metal part by the National Standardization Technical Committee and centralized. This section is responsible for drafting unit. Tongling Nonferrous Metals Group Holdings Limited. Participated in the drafting of this section. Daye Nonferrous Metals Co., Jiangxi Copper Corporation. The main drafters of this section. Jiang Lihong, Wang real rich, Liqin Mei, Wang Jinping, Liu Chenghua, new Feng, Wang Yongbin, Chen Yao, Wang Da Tong. Methods for chemical analysis of copper black Part 2. Determination of the amount of gold and silver fire assay

1 Scope

YS/T of the provisions of the section 716 determination of black copper gold and silver content. This section applies to the determination of black copper gold and silver content. Measuring range. Au. ≥0.50μg/g; Ag. ≥20.0μg/g.

2 Method summary

After sample ingredients, high temperature melting, metal lead capture in a sample of precious metal buckle molten state is formed of lead, and other substances in a sample of flux Generation of fusible slag. The lead button cupellation give gold and silver grains together, remove impurities co-grain surface adhesion, nitric acid sub-gold, silver measured by titration Amount, the determination of gold by weight method.

3 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity. 3.1 Sodium carbonate. pure industrial, powder. 3.2 Lead Oxide. technical grade, powdered (gold < 0.5μg/g, Ag < 5μg/g). 3.3 Silica. Industrial pure, powder. 3.4 Borax. powder. 3.5 Starch. powder. 3.6 Potassium nitrate. powder. 3.7 Sodium Chloride. industrial pure, powder. 3.8 Silver (mass fraction of not less than 99.99%). 3.9 lead foil. thickness 0.1mm ~ 0.15mm, weight 3g ~ 5g, square, excluding gold and silver. 3.10 Nitrate (ρ1.42g/mL), pure class distinctions. 3.11 nitric acid (1 + 7), chlorine root. 3.12 nitric acid (1 + 1), chlorine root. 3.13 ferric ammonium sulfate indicator. Take a saturated solution of ammonium ferric sulfate, nitrate plus three (1 + 3), and mix. 3.14 potassium thiocyanate standard titration solution (Ba KSCN = 0.005mol/L; Ba KSCN = 0.01mol/L). 3.14.1 formulated 3.14.1.1 formulation (Ba KSCN = 0.01mol/L) Weigh 1.0g of potassium thiocyanate, placed in 100mL beaker, dissolved in water and transferred to 1000mL volumetric flask, dilute to volume, and mix. After standing one week filtration and set aside. 3.14.1.2 formulation (Ba KSCN = 0.005mol/L) Weigh 0.5g of potassium thiocyanate, placed in 100mL beaker, dissolved in water and transferred to 1000mL volumetric flask, dilute to volume, and mix. After standing one week filtration and set aside. 3.14.2 Calibration 3.14.2.1 Calibration (Ba KSCN = 0.01mol/L) Said silver 25.0mg ~ 30.00mg triplicate were placed in a porcelain crucible 50mL, 10mL ~ 15mL of nitric acid was added (3.12), Heat gently to dissolve and evaporated to about 1mL ~ 2mL, adding a small amount of water and 0.5mL ferric ammonium sulfate indicator (3.13), potassium thiocyanate standard titration

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of YS/T 716.2-2009_English be delivered?

Answer: Upon your order, we will start to translate YS/T 716.2-2009_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 YS/T 716.2-2009_English with my colleagues?

Answer: Yes. The purchased PDF of YS/T 716.2-2009_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 [email protected]. 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.