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YS/T 349.2-2023 English PDF

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YS/T 349.2-2023: (Methods for chemical analysis of cobalt concentrates - Part 2: Determination of copper content Flame atomic absorption spectrometry and iodometric method)
Status: Valid

YS/T 349.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
YS/T 349.2-2023English319 Add to Cart 4 days [Need to translate] (Methods for chemical analysis of cobalt concentrates - Part 2: Determination of copper content Flame atomic absorption spectrometry and iodometric method) Valid YS/T 349.2-2023
YS/T 349.2-2010English239 Add to Cart 3 days [Need to translate] Methods for chemical analysis of cobalt sulfide concentrate. Part 2: Determination of copper content. Flame atomic absorption spectrometry Obsolete YS/T 349.2-2010

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YS/T 252.6   GB/T 3884.2   GB/T 3884.1   YS/T 349.4   YS/T 349.3   YS/T 349.1   

Basic data

Standard ID YS/T 349.2-2023 (YS/T349.2-2023)
Description (Translated English) (Methods for chemical analysis of cobalt concentrates - Part 2: Determination of copper content Flame atomic absorption spectrometry and iodometric method)
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H13
Classification of International Standard 77.120.40
Word Count Estimation 16,150
Date of Issue 2023-12-20
Date of Implementation 2024-07-01
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the method for determination of copper content in cobalt concentrate. This standard is applicable to the determination of copper content in cobalt concentrate. The measurement range of method 1 is 0.10% ~ 3.50%; the measurement range of method 2 is > 3.50% ~ 35.00%.

YS/T 349.2-2010: Methods for chemical analysis of cobalt sulfide concentrate. Part 2: Determination of copper content. Flame atomic absorption spectrometry


---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 cobalt sulfide concentrate.Part 2. Determination of copper content.Flame atomic absorption spectrometry ICS 77.120.70 H13 People's Republic of China Nonferrous Metals Industry Standard Partial replacement of YS/T 349-1994 Cobalt sulfide concentrates - Methods Part 2. Determination of copper content Flame Atomic Absorption Spectrometry Part 2. Determinationofcoppercontent- Issued on. 2010-11-22 2011-03-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 349 "cobalt sulfide concentrates - the method" is divided into four parts. --- Part 1. Determination of cobalt content potentiometric titration; --- Part 2. Determination of copper content - Flame atomic absorption spectrometry; --- Part 3. Determination of manganese content by flame atomic absorption spectrometry; --- Part 4. Determination of the amount of silica potassium fluosilicate volumetric method. This is Part 2. The partial replacement of YS/T 349-1994 "matte cobalt concentrate chemical analysis methods" section determination of copper content, and YS/T 349-1994 phase Ratio, this section there are major changes as follows. --- Analysis of the iodine and fluoride method to the flame atomic absorption spectrometry; --- Measurement range is defined as. 0.1% to 2%; --- Supplementary terms of quality assurance and control, increasing the precision of the terms. The non-ferrous metal part by the National Standardization Technical Committee and centralized. This section is responsible for drafting Jinchuan Group Limited. This in part by the Beijing General Research Institute of Mining and Metallurgy, Beijing Nonferrous Metal Research Institute, CRIMM participate in the drafting. The main drafters of this section. Zhang Zhi hair, dry Yong, Yang Yuanyuan, Lv Qingcheng, Huangai Rong, Lin Hsiu-ying, Tangshu Fang, Yu Li, Liu, Xiahuai Bin, Yang Lin. This part of the standard replaces the previous editions are. --- YS/T 394-1994; --- YB825-1975. Cobalt sulfide concentrates - Methods Part 2. Determination of copper content Flame Atomic Absorption Spectrometry

1 Scope

This section YS/T 349 specifies the method for determination of cobalt sulfide concentrate copper content. This section applies to the determination of cobalt sulfide concentrates of copper content. Measurement range. 0.1% to 2%.

2 Method summary

Samples with hydrochloric acid, nitric acid, perchloric acid decomposition in dilute hydrochloric acid medium with an air - acetylene flame atomic absorption spectrometer wavelength 324.8nm At measuring the absorbance, the standard curve method to calculate the amount of copper.

3 Reagents

Unless otherwise specified, the reagents were analytical reagent, which is a distilled water or equivalent purity water. 3.1 ammonium hydrogen fluoride. 3.2 hydrochloride (ρ1.19g/mL). Nitrate 3.3 (ρ1.42g/mL). 3.4 perchloric acid (ρ1.67g/mL). 3.5 Hydrofluoric acid (ρ1.15g/mL). 3.6 Copper Standard stock solution. Weigh 1.0000g copper (≥99.95%) into 500mL beaker, add 20mL of nitric acid (11) End Totally dissolved, boiled driving nitrogen oxides. Remove, cool to room temperature and transferred to 1000mL volumetric flask, constant volume of water. This solution containing 1mL 1mg of copper. 3.7 Copper Standard Solution. Pipette 15.00mL copper standard stock solution (3.6) in 500mL volumetric flask, was added 5mL hydrochloric acid (3.2) to Water volume. This solution 1mL containing 30μg copper.

4 Instrument

Atomic absorption spectrometer, with copper hollow cathode lamp. Under optimum working conditions for those who can reach the following indicators can be used; --- Sensitivity. basically the same test solution and measurement solution, features copper concentration should not exceed 0.05μg/mL; --- Precision. standard solution with the highest concentration of 10 times the absorbance measurements, the standard deviation should not exceed the average absorbance of 1.0%; The lowest concentration of standard solution used (instead of "zero" standard solution) absorbance measured 10 times, and the standard deviation should not exceed the maximum concentration 0.5% of the mean absorbance of the standard solution; --- Linear curve. The curve is divided into five sections according to concentration, absorbance difference between the absorbance difference between the highest and the lowest segment of the segment Ratio of not less than 0.80. Atomic absorption spectrometer operating conditions refer to Table 1.

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