|
US$159.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
YS/T 775.6-2011: Methods for chemical analysis of lead anode slime. Part 6: Determination of copper content. Iodine titration method
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 775.6-2011 | English | 159 |
Add to Cart
|
3 days [Need to translate]
|
Methods for chemical analysis of lead anode slime. Part 6: Determination of copper content. Iodine titration method
| Valid |
YS/T 775.6-2011
|
PDF similar to YS/T 775.6-2011
Basic data | Standard ID | YS/T 775.6-2011 (YS/T775.6-2011) | | Description (Translated English) | Methods for chemical analysis of lead anode slime. Part 6: Determination of copper content. Iodine titration method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.01 | | Word Count Estimation | 6,644 | | Date of Issue | 2011-12-20 | | Date of Implementation | 2012-07-01 | | Regulation (derived from) | ?MIIT Announcement 2011 No.43 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the determination of lead anode mud of copper content. This section applies to the determination of lead anode mud of copper content. Measuring range: 2. 00%-12. 00%. | YS/T 775.6-2011: Methods for chemical analysis of lead anode slime. Part 6: Determination of copper content. Iodine titration 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 lead anode slime.Part 6. Determination of copper content.Iodine titration method
ICS 77.120.01
H13
People's Republic of China Nonferrous Metals Industry Standard
Methods for chemical analysis of lead anodes
Part 6. determination of copper content
Iodometric method
Part 6. Determination ofcoppercontent-
2011-12-20 release
2012-07-01 Implementation
Issued by the Ministry of Industry and Information Technology of the People's Republic of China
Foreword
YS/T 775-2011 "lead anode mud chemical analysis method" is divided into seven parts.
- Part 1. Determination of lead content - Na2EDTA titration;
Part 2. Determination of Bismuth Flame Atomic Absorption Spectrometry and Na2EDTA Titration;
- Part 3. Determination of arsenic content - Potassium bromate titration;
- Part 4. Determination of antimony content - Flame atomic absorption spectrometry and cerium sulphate titration;
- Part 5. Determination of gold and silver;
- Part 6. Determination of copper content - Iodometric method;
Part 7. Determination of arsenic, copper and selenium - Inductively coupled plasma atomic emission spectrometric method.
This section is part 6.
The arbitration analysis of this part and the overlapping range of Part 7 is carried out using the method of this part.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part is the national nonferrous Metals Standardization Technical Committee (SAC/TC243).
This part is responsible for drafting units. Shaanxi Dongling Zinc Industry Co., Ltd.
This part of the drafting unit. China Metallurgical Huludao Nonferrous Metals Group Co., Ltd.
This part participates in the drafting unit. Zhuzhou Smelting Group Co., Ltd., Zhongjin Lingnan Nonferrous Metals Co., Ltd. Shaoguan Smelter,
Guangxi Hechi City South Nonferrous Smelting Co., Ltd.
The main drafters of this part. Li Zunyi, Zhao Dan, Zhang Yanyun, Gu Li, Huang Mingshan, Wei Yongbao, Zhou Xiumei.
Methods for chemical analysis of lead anodes
Part 6. determination of copper content
Iodometric method
1 Scope
This part of YS/T 775 specifies the determination of copper content in lead anodic mud.
This part is applicable to the determination of copper content in lead anode mud, and the determination range is 2.00% ~ 12.00%.
2 method summary
Samples with hydrochloric acid, nitric acid, sulfuric acid dissolved, with hydrogen bromide to remove arsenic, antimony, tin and other interference elements. Control solution pH value of 3 to 4, with fluoride
Hydrogenated ammonium masking iron, adding potassium iodide and divalent copper, the precipitation of iodine as a indicator, with sodium thiosulfate standard titration solution titration
To the solution becomes colorless for the end.
3 reagent
Unless otherwise stated, only the reagents identified as analytical reagents and distilled or deionized water or comparable purity were used in the analysis.
3.1 Potassium iodide.
3.2 Hydrochloric acid (ρ1.19g/mL).
3.3 nitric acid (ρ1.42g/mL).
3.4 Sulfuric acid (ρ1.84g/mL).
3.5 hydrobromic acid (ρ1.49g/mL).
3.6 glacial acetic acid (ρ1.05g/mL).
3.7 ammonia (ρ0.90g/mL).
3.8 Starch solution (5 g/L).
3.9 Ammonium fluoride in saturated solution.
3.10 potassium thiocyanate solution (100g/L). Weigh 10g potassium thiocyanate in a 400mL beaker, add water and dilute to 100mL. plus
Into the 2g potassium iodide (3.1) dissolved, add 2mL starch solution (3.8), while the side of the drop of iodine solution (about 0.04mol/L) to just blue
Color, then titration with sodium thiosulfate titration solution to blue just disappeared.
3.11 copper standard solution. Weigh 1.0000g metal copper (wCu ≥ 99.99%) placed in 500mL conical beaker, add 20mL nitric acid
(1 1), cover the surface of the dish, low temperature heating dissolved completely, add 5mL sulfuric acid (3.4), steamed to smoke white smoke, remove the cooling, water washing table
And the cup wall, slightly so that the salt dissolves, remove the cooling, into the 500mL volumetric flask, diluted with water to the mark, mix. This solution 1mL
Containing 2 mg of copper.
3.12 sodium thiosulfate standard titration solution [c (Na2S2O3.5H2O) ≈ 0.04mol/L].
3.12.1 Preparation. Weigh 100g sodium thiosulfate (Na2S2O3.5H2O) placed in a 1000mL beaker, add 2g anhydrous sodium carbonate,
Add 500mL of water dissolved, into the 10L brown reagent bottle. Diluted with boiling and cooled water to about 10 L, and 1 mL of trichloromethane was added
Alkane, mix well for one week.
3.12.2 Calibration. Remove four 25.00 mL copper standard solution (3.11) In a 500 mL conical beaker, wash the cup wall with water. According to points
|