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YS/T 281.7-2011: Methods for chemical analysis of cobalt. Part 7: Determination of zinc content. Flame atomic absorption spectrometry
Status: Valid YS/T 281.7: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 281.7-2011 | English | 159 |
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Methods for chemical analysis of cobalt. Part 7: Determination of zinc content. Flame atomic absorption spectrometry
| Valid |
YS/T 281.7-2011
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| YS/T 281.7-1994 | English | 199 |
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Cobalt - Determination of zinc content - Flame atomic absorption spectrophotometric method
| Obsolete |
YS/T 281.7-1994
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PDF similar to YS/T 281.7-2011
Basic data | Standard ID | YS/T 281.7-2011 (YS/T281.7-2011) | | Description (Translated English) | Methods for chemical analysis of cobalt. Part 7: Determination of zinc content. Flame atomic absorption spectrometry | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.70 | | Word Count Estimation | 6,621 | | Date of Issue | 2011-12-20 | | Date of Implementation | 2012-07-01 | | Older Standard (superseded by this standard) | YS/T 281.7-1994 | | Regulation (derived from) | ?MIIT Announcement 2011 No.43 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the method for the determination of cobalt zinc content. This section applies to the determination of zinc content in cobalt. Measuring range: 0. 00080% to 0. 0080%. | YS/T 281.7-2011: Methods for chemical analysis of cobalt. Part 7: Determination of zinc content. Flame atomic absorption spectrometry
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Methods for chemical analysis of cobalt.Part 7. Determination of zinc content.Flame atomic absorption spectrometry
ICS 77.120.70
H13
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 281.7-1994
Methods for chemical analysis of cobalt
Part 7. Determination of zinc contents
Flame Atomic Absorption Spectrometry
Part 7. Determinationofzinccontent-
Issued on. 2011-12-20
2012-07-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 281-2011 "cobalt chemical analysis method" is divided into the following 20 sections.
--- Part 1. Determination of iron content sulfonic acid spectrophotometry
--- Part 2. Determination of the amount of chrome aluminum Azure S Spectrophotometry
--- Part 3. Determination of silicon content - Molybdenum blue spectrophotometric method
--- Part 4. Determination of arsenic content - Molybdenum blue spectrophotometric method
--- Part 5. Determination of phosphorus content - Molybdenum blue spectrophotometric method
--- Part 6. Determination of magnesium content - Flame atomic absorption spectrometry
--- Part 7. Determination of zinc content - Flame atomic absorption spectrometry
--- Part 8. Determination of cadmium content by flame atomic absorption spectrometry
--- Part 9. Determination of lead content - flame atomic absorption spectrometry
--- Part 10. Determination of nickel content by flame atomic absorption spectrometry
--- Part 11. Flame atomic copper, manganese content absorption spectrometry
--- Part 12. arsenic, antimony, bismuth, tin, lead and determining the amount of electrothermal atomic absorption spectrometry
--- Part 13. Determination of sulfur content high frequency induction furnace combustion infrared absorption method
--- Part 14. Determination of the amount of carbon high-frequency induction furnace combustion infrared absorption method
--- Part 15. arsenic, antimony, bismuth contents - Hydride Generation - Atomic Fluorescence Spectrometry
--- Part 16. Determination of DC arc atomic arsenic, cadmium, copper, zinc, lead, bismuth, tin, antimony, silicon, manganese, iron, nickel, aluminum, magnesium content of the emitted light
Spectroscopy
--- Part 17. aluminum, manganese, nickel, copper, zinc, cadmium, tin, antimony, lead, bismuth content - Inductively Coupled Plasma Mass Spectrometry
--- Part 18. Determination of sodium content by flame atomic absorption spectrometry
--- Part 19. calcium, magnesium, manganese, iron, cadmium, zinc content - Inductively coupled plasma atomic emission spectrometry
--- Part 20. Determination of oxygen content - Impulse - infrared absorption method
This section YS/T 281 Part 7.
This section drafted in accordance with GB/T 1.1-2009 given rules.
The partial replacement of YS/T 281.7-1994 "cobalt chemical analysis by flame atomic absorption spectrometry determination of zinc content." versus
YS/T 281.7-1994 compared, this section there are major changes as follows.
--- Text format has been modified, supplemented with quality assurance and control provisions, increase the repeatability limit and reproducibility limit;
--- Complement the test reporting requirements.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) and focal points.
This standard is drafted by. Jinchuan Group Co., Ltd., Beijing General Research Institute of Mining and Metallurgy.
This section is responsible for drafting unit. Jinchuan Group Limited.
Participated in the drafting of this section. Zhejiang Huayou Cobalt Co., Ltd., Beijing Nonferrous Metal Research Institute, Beijing General Research Institute of Mining and Metallurgy.
The main drafters of this section. Zhang Lansheng, Lixi Kai, Lvqing Cheng, Zhang Jihong, Wu Yahui, Xie Bohua, Fanjuan Hui, Lee Man Chi, Feng advanced,
Jiang Tao demand.
This part of the standard replaces the previous editions are.
--- YS/T 281.7-1994.
Methods for chemical analysis of cobalt
Part 7. Determination of zinc contents
Flame Atomic Absorption Spectrometry
Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out all possible security issues. Make
With those who have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
This section YS/T 281 provides for the determination of cobalt in zinc content.
This section applies to the determination of zinc content in cobalt. Measurement range. 0.00080% to 0.0080%.
2 Method summary
Sample decomposition with nitric acid, in dilute nitric acid medium, using air - acetylene flame atomic absorption spectrometer at a wavelength of 213.9nm measured
Zinc absorbance. In the standard solution and sample solution should contain the same concentration of cobalt matrix.
3 Reagents
Unless otherwise specified, the reagents were analytical reagent solution preparation and analysis are secondary distilled water or equivalent purity test
Room with water.
3.1 cobalt (wCo≥99.98%, wZn < 0.0001%).
3.2 nitric acid (ρ = 1.42g/mL), pure class distinctions.
3.3 nitric acid (11).
3.4 nitric acid (119).
3.5 standard zinc stock solution. Weigh 0.5000g zinc metal (wZn > 99.95%), placed in 400mL beaker, add 30mL of nitric acid
(3.3), cover sheet pan, heat until completely dissolved, micro-boiling rid of nitrogen oxides, removed, washed with water and dish table Beibi, cooled to room temperature. Moved
1000mL volumetric flask with water to volume, and mix. The solution 1mL containing 500μg zinc.
3.6 Zinc standard solution. Pipette 5.00mL standard zinc stock solution (3.5), placed in 250mL flask with water to volume, and mix. This solution
Liquid 1mL containing 10μg zinc.
4 Instrument
Atomic absorption spectrometer, with zinc hollow cathode lamp.
Under optimum working conditions for those who can reach the following indicators can be used.
--- Characteristic concentration. in the measurement sample solution matrix consistent solution, characterized in zinc concentration should be less than 0.005μg/mL.
--- 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 0.85.
--- Precision. standard solution with the highest concentration of 10 times the absorbance measurements, the standard deviation should not exceed the average absorbance
1.50%; absorbance measured 10 times the minimum concentration of the standard solution (not a "zero" concentration of the standard), the standard deviation should not be
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