YS/T 897: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 897-2024 | English | RFQ |
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(Chemical analysis method for high purity niobium - Determination of trace element content - Glow discharge mass spectrometry)
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YS/T 897-2024
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| YS/T 897-2013 | English | 239 |
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Methods for chemical analysis of high purity niobium. Determination of trace impurity element content. Glow discharge mass spectrometry
| Obsolete |
YS/T 897-2013
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Basic data | Standard ID | YS/T 897-2024 (YS/T897-2024) | | Description (Translated English) | (Chemical analysis method for high purity niobium - Determination of trace element content - Glow discharge mass spectrometry) | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.99 | | Date of Issue | 2024-10-24 | | Date of Implementation | 2025-05-01 | | Older Standard (superseded by this standard) | YS/T 897-2013 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the method for determining the content of trace elements in high-purity niobium by glow discharge mass spectrometry. This standard is applicable to the determination of trace element content in high-purity niobium, with a determination range of 0.050mg/kg to 10mg/kg for sulfur, chlorine, and mercury, 0.001mg/kg to 100mg/kg for tungsten and molybdenum, 0.001mg/kg to 300mg/kg for tantalum, and 0.001mg/kg to 50mg/kg for other elements. | YS/T 897-2013: Methods for chemical analysis of high purity niobium. Determination of trace impurity element content. Glow discharge mass spectrometry
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Methods for chemical analysis of high purity niobium. Determination of trace impurity element content. Glow discharge mass spectrometry
ICS 77.120.99
H63
People's Republic of China Nonferrous Metals Industry Standard
Methods for chemical analysis of high purity niobium
Determination of trace elements
Glow Discharge Mass Spectrometry
Issued on. 2013-10-17
2014-03-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized.
This standard was drafted. Beijing Nonferrous Metal Research Institute, Jinchuan Group Co., Ltd., Dongfang Electric Group Emei Semiconductor Material
Limited.
The main drafters of this standard. LI Yan-fen, Li Po City, Liu Ying, Sun Zeming, Tong Jian, Li Jidong, Zang Muwen, Li Na, Chengzi Hui, Zhangjiang Feng,
Qiu Ping, Qinfang Lin, Wen-ying, Wang Panfeng.
Methods for chemical analysis of high purity niobium
Determination of trace elements
Glow Discharge Mass Spectrometry
1 Scope
This standard specifies the method for determination of trace elements in high purity niobium, the determination of elements in Table 1.
This standard applies to the determination of trace elements in high purity niobium. In addition to tantalum, molybdenum, tungsten, outside the range of measurement of the elements 1.0μg/kg ~
5000μg/kg, the range of measurement of tantalum 1.0μg/kg ~ 300000μg/kg, molybdenum and tungsten measurement range of 1.0μg/kg ~ 100000μg/kg.
2 principle of the method
Sample as the cathode glow discharge, and the surface thereof is sputtered atoms from the sample into the plasma in the glow discharge, is ionized and then
Import mass spectrometer for measurement. In each element isotope mass number punishable by default scan points and the integration time of the corresponding peak integration, the
Area of peak intensity is obtained. In the absence of a standard sample, according to the instrument computer software "typical relative sensitivity factor" calculated automatically
The mass fraction of the elements; when the standard sample is required by the sample in the same assay conditions, the ion source structure and the test conditions
Under the standard sample was determined by independent relative sensitivity factor, the application of the relative sensitivity factor to calculate the mass fraction of the elements.
Element content measured in mass fraction w (X) dollars, according to equation (1).
w (X) =
RSF (X/Nb) · IX · ANb
INb · AX
· W (Nb) (1)
Where.
w (X) --- analyte concentration, in micrograms per kilogram (μg/kg);
RSF (X/Nb) --- correction coefficient of the element X and Nb measured glow discharge under specified conditions;
Isotope peak intensity IX --- tested element X, cps;
ANb --- Nb isotopic abundance of elements;
Isotope peak intensity INb --- Nb elements, cps;
AX --- analyte X isotopic abundance;
Definition mass fraction w (Nb) --- Nb is 1.00 × 109μg/kg.
3 Reagents and materials
Unless otherwise indicated, the reagents used in the analysis are excellent pure; water used as a water.
3.1 ethanol.
3.2 Argon (φ≥99.999%).
3.3 Hydrofluoric acid (19).
3.4 niobium standard sample, measured elements mass fraction of 50μg/kg ~ 500μg/kg.
3.5 niobium blank samples, measured element quality requirements over the sample under test scores below 10 times.
4 Instrument
4.1 high resolution glow discharge mass spectrometer, under the resolution mode resolution of up to 3000 to 4000, high-resolution mode resolution
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