Search result: YS/T 1050.1-2015
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Methods for chemical analysis of lead antimony concentrates - Part 1: Determination of lead content - Na2EDTA titration method
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YS/T 1050.1-2015
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| Standard ID | YS/T 1050.1-2015 (YS/T1050.1-2015) | | Description (Translated English) | Methods for chemical analysis of lead antimony concentrates. Part 1: Determination of lead content. Nat2EDTA titration method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | D42 | | Classification of International Standard | 73.06 | | Word Count Estimation | 6,660 | | Date of Issue | 2015-04-30 | | Date of Implementation | 2015-10-01 | | Drafting Organization | Guangxi Zhuang Autonomous Region Metallurgical Products Quality Supervision and Inspection Station, Guangxi Huaxi Group Co., Ltd. | | Administrative Organization | National Non-Ferrous Metals Standardization Technical Committee (SAC/TC 243) | | Regulation (derived from) | Ministry of Industry and Information Technology Announcement (2015 No. 28) | | Issuing agency(ies) | Ministry of Industry and Information Technology of the People's Republic of China | | Summary | This Standard specifies the method for determination of lead-antimony concentrates of lead content. This Standard applies to the determination of the amount of lead in lead-antimony concentrate, the measurement range (mass fraction) was 14.00% ~ 34.00%. |
YS/T 1050.1-2015
(Lead Antimony concentrates - Part 1. Determination of lead content Na2EDTA titration)
ICS 73.060
D42
People's Republic of China Nonferrous Metals Industry Standard
Methods for chemical analysis of lead-antimony concentrate
Part 1. Determination of lead content
Na2EDTA titration
Part 1. Determinationofleadcontent-
Issued on. 2015-04-30
2015-10-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 1050-2015 "Methods for chemical analysis of lead-antimony concentrate" is divided into the following nine sections.
--- Part 1. Determination of lead content Na2EDTA titration;
--- Part 2. Determination of antimony content cerium sulfate titration;
--- Part 3. Determination of arsenic content potassium bromate titration;
--- Part 4. Determination of zinc contents Na2EDTA titration;
--- Part 5. Determination of sulfur content - Gravimetric method;
--- Part 6. Determination of iron content cerium sulfate titration;
--- Part 7. Determination of the amount of bismuth and copper - Flame atomic absorption spectrometry amount;
--- Part 8. gold and silver content determination fire assay;
--- Part 9. Determination of the amount of silver by flame atomic absorption spectrometry.
This is Part 1.
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. Guangxi Metallurgical Product Quality Supervision and Inspection Station.
This section is drafted. Guangxi China Tin Group Co., Ltd.
Participated in the drafting of this section. Beijing Mining Research Institute, Guangxi Zhuang Autonomous Region Analysis and Testing Center, China Certification & Inspection Group
Ltd., Guangxi, Guilin University of Technology.
The main drafters of this section. Ming-Liang Chao, Qin Zuo Ming, Huang Xusheng, FAN Li new Huoxi Xiao, Wu Xueying, Li Jian, Zhou Sulian, Weiya Juan, Huangzhao Min,
Moda Song, Liu Shouting.
Methods for chemical analysis of lead-antimony concentrate
Part 1. Determination of lead content
Na2EDTA titration
1 Scope
This section YS/T 1050 specifies the method for determination of lead-antimony concentrates of lead content.
This section applies to the determination of the amount of lead in lead-antimony concentrate, the measurement range (mass fraction) was 14.00% ~ 34.00%.
2 Method summary
Sample by sulfuric acid, nitric acid is dissolved, remove arsenic, antimony and tin with hydrobromic acid. Lead to lead sulfate precipitation and other interfering elements separated precipitate
Dissolved in a pH value of 5.5 to 6.0 acid - sodium acetate buffer solution, with xylenol orange as indicator, titrate with standard Na2EDTA
To the solution from purple turns bright yellow as the end point.
3 Reagents
Unless otherwise indicated, this part of the reagents were analytical reagent, the water for the two water.
3.1 metallic lead (Pb mass fraction ≥99.99%).
3.2 sodium fluoride.
3.3 sulfate (ρ = 1.84g/mL).
3.4 nitric acid (ρ = 1.42g/mL).
3.5 hydrobromide (ρ = 1.49g/mL).
3.6 ethanol.
3.7 ascorbic acid.
3.8 nitric acid (19).
3.9 sulfate wash (298).
3.10 acetic acid - sodium acetate buffer solution. Weigh 200g of sodium acetate [CH3COONa · 3H2O] was dissolved in water, was added 10mL of glacial acetic acid,
Diluted with water to 1000mL, and mix.
3.11 disodium edetate (Na2EDTA) Standard Solution
3.11.1 formulated
2.86gNa2EDTA weighed in a beaker, add water, dissolved by heating, cooling filtration and transferred to 1000mL volumetric flask with water
Dilute to volume, mix, after placing 1d calibration.
3.11.2 Calibration
Weigh 0.05g of metallic lead (3.1), accurate to 0.0001g, placed triangle 250mL beaker, add 15mL sulfuric acid (3.3), 5mL
Nitric acid (3.4), placed on the high-temperature furnace heated to white smoke vacated. 5.4.2 - 5.4.5 by the following conduct.
Along with the calibration blank test.
The actual concentration Na2EDTA standard titration solution according to formula (1).
c =
m0
(V2-V1) × 10-3 × 207.19
(1)
......
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