YS/T 1075.5-2015 (YS/T1075.5-2015, YST 1075.5-2015, YST1075.5-2015) & related versions
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Methods for chemical analysis of vanadium-aluminium and molybdenum-aluminium master alloys - Part 5: Determination of aluminum content - EDTA titration
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YS/T 1075.5-2015
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YST 1075.5-2015
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YS/T 1075.5-2015: PDF in English (YST 1075.5-2015)
YS/T 1075.5-2015
(Vanadium aluminum, molybdenum intermediate aluminum alloys - Part 5. Determination of aluminum content EDTA titration)
ICS 77.120.99
H14
People's Republic of China Nonferrous Metals Industry Standard
Aluminum vanadium, molybdenum intermediate aluminum alloys -
Part 5. Determination of aluminum content
EDTA titration
Part 5. Determinationofaluminumcontent-EDTAtitration
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 1075 "aluminum vanadium, molybdenum intermediate aluminum alloy chemical analysis method" including a total of 8 sections.
--- Part 1. Determination of iron content - 1,10-phenanthroline spectrophotometry;
--- Part 2. Determination of molybdenum content of lead molybdate gravimetric method;
--- Part 3. Determination of silicon content - Molybdenum blue spectrophotometric method;
--- Part 4. vanadium content - Inductively coupled plasma atomic emission spectrometry and ferrous ammonium sulfate titration;
--- Part 5. Determination of aluminum content EDTA titration;
--- Part 6. Determination of carbon content in the high-frequency combustion - infrared absorption method;
--- Part 7. Determination of the amount of oxygen in the inert gas fusion - infrared method;
--- Part 8. molybdenum, aluminum X- determining the amount of fluorescence spectroscopy.
This section YS/T 1075 Part 5.
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) and focal points.
This section is drafted. Guangzhou Nonferrous Metal Research Institute, Western Metal Materials Co., Ltd., Chengde Vanadium big industry limited liability company,
Northwest Nonferrous Metal Research Institute, Ltd. in Dalian financial Gaudet kinds of materials, high-tech metal Material Co., Ltd. Donggang East.
The main drafters of this section. Maili Bi, Xiong Xiaoyan, Redevex school, Wang Jin, Zhang Bin, Zhai through Germany, Mr. Li, Zhang Yaru, Zhou Kai, Sunbao Lian,
Li Jingyu, Zhang Deying, Zou Deling, ADMINISTRATION AND TECHNIQUE.
Aluminum vanadium, molybdenum intermediate aluminum alloys -
Part 5. Determination of aluminum content
EDTA titration
1 Scope
YS/T 1075 This section provides the aluminum vanadium, molybdenum determination of aluminum alloy with aluminum content.
This section applies to aluminum vanadium, molybdenum, aluminum master alloys Determination of aluminum content. Measurement range. 15.00% - 50.00%.
2 Method summary
Sample with sulfuric acid, nitric acid decomposition. EDTA was added at a pH of 4 to 5 weakly acidic medium, the PAN as indicator,
Zinc acetate titration standard solution titration of excess EDTA, sodium fluoride and aluminum complex quantitative release of EDTA, then zinc acetate standard
Titration titration released EDTA, whereby the determination of aluminum content.
Hydroxylamine hydrochloride can eliminate the interference of coexisting elements vanadium, molybdenum coexisting elements, such as iron does not interfere with the determination of aluminum.
3 Reagents
3.1 sodium fluoride.
3.2 sulfate (11).
3.3 nitric acid (11).
3.4 hydroxylamine hydrochloride solution (100g/L).
3.5 Sodium hydroxide solution (150g/L).
3.6 hydrochloride (11).
3.7 copper chloride solution (10g/L).
3.8 EDTA solution (0.05mol/L).
3.9 hexamethylenetetramine buffer solution (pH value of about 5). Weigh 150g of hexamethylenetetramine dissolved in 350mL of water, was added 50mL
Hydrochloric acid (ρ = 1.19g/mL). Adjusting the pH of the solution with hydrochloric acid (3.6) is about 5 (dipstick), dilute with water to 500mL volume,
Mix well.
3.10 Aluminum Standard stock solution (1.0mg/mL). Weigh 1.0000g of aluminum (wAl≥99.95%) in a polytetrafluoroethylene beaker, add
20mL of water and 3g of sodium hydroxide, to be dissolved completely, with hydrochloric acid (3.6) slowly neutralized to precipitate, and excess 20mL, stirring constantly
The precipitate was dissolved, cooled and transferred to 1000mL volumetric flask, dilute with water to volume, and mix.
3.11 standard titration of zinc acetate solution (about 0.014mol/L)
3.11.1 preparation. Weigh 6.0g zinc acetate [Zn (CH3COO) 2 · 2H2O] was dissolved in water and added to 4mL of glacial acetic acid and transferred to 2000mL
Volumetric flask, dilute with water to volume, and mix.
3.11.2 Calibration. Pipette 5.00mL 3 parts of aluminum standard solution (3.10) in 300mL conical flask, along with the blank test. The following press
5.4.3 ~ 5.4.6 conduct. Zinc acetate parallel calibration standard titration solution volume consumed by poor should not exceed 0.10mL, averaged.
According to equation (1) calculate the mass per unit volume of zinc acetate equivalent standard titration solution of aluminum.
f =
5 × 10-3
V1-V0
(1)
......
| Standard ID | YS/T 1075.5-2015 (YS/T1075.5-2015) | | Description (Translated English) | Methods for chemical analysis of vanadium-aluminium and molybdenum-aluminium master alloys. Part 5: Determination of aluminum content. EDTA titration | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 6,646 | | Date of Issue | 2015-04-30 | | Date of Implementation | 2015-10-01 | | Drafting Organization | Guangzhou Research Institute of Nonferrous Metals; Western Metal Materials Co., Ltd; Chengde Vanadium big industry limited liability company; NIN; Gaudet kinds of Materials Co., Ltd. Dalian Rong; Donggang East hi-Metal Materials Co., | | 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) | | Proposing organization | National Non-Ferrous Metals Standardization Technical Committee (SAC/TC 243) | | Issuing agency(ies) | Ministry of Industry and Information Technology of the People's Republic of China | | Summary | This Standard specifies the aluminum vanadium, molybdenum determination of aluminum alloy with aluminum content. This Standard applies to aluminum vanadium, molybdenum aluminum alloy with aluminum contents. Measurement range: 15.00% - 50.00%. |
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