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GB/T 45020-2024: Methods for chemical analysis of niobium hafnium alloys - Determination of trace impurity elements content - Inductively coupled plasma mass spectrometry
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 45020-2024 | English | 279 |
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Methods for chemical analysis of niobium hafnium alloys - Determination of trace impurity elements content - Inductively coupled plasma mass spectrometry
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GB/T 45020-2024
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Basic data
| Standard ID | GB/T 45020-2024 (GB/T45020-2024) |
| Description (Translated English) | Methods for chemical analysis of niobium hafnium alloys - Determination of trace impurity elements content - Inductively coupled plasma mass spectrometry |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | H14 |
| Classification of International Standard | 77.120.99 |
| Word Count Estimation | 14,113 |
| Date of Issue | 2024-11-28 |
| Date of Implementation | 2025-06-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 45020-2024: Methods for chemical analysis of niobium hafnium alloys - Determination of trace impurity elements content - Inductively coupled plasma mass spectrometry
---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 niobium hafnium alloys - Determination of trace impurity elements content - Inductively coupled plasma mass spectrometry
Chemical analysis methods for niobium and hafnium alloys
Determination of trace impurity elements
Inductively Coupled Plasma Mass Spectrometry
Methods for chemical analysis of niobium hafnium alloys-
Determination of trace impurity elements content-
Inductively coupled plasma mass spectrometry
ICS 77.120.99
CCS H 14
National Standard of the People's Republic of China
Released on 2024-11-28
2025-06-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting is required.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by China Nonferrous Metals Industry Association.
This document is under the jurisdiction of the National Technical Committee on Standardization of Nonferrous Metals (SAC/TC 243).
This document was drafted by. Xi'an Han Tang Analysis and Testing Co., Ltd., Guangdong Academy of Sciences Industrial Analysis and Testing Center, National Standard (Beijing) Inspection
Shenzhen Zhongjin Lingnan Nonferrous Metals Co., Ltd., Shenzhen Steel Research Institute Nake Testing Technology Co., Ltd.
Co., Ltd., Chengde Tianda Vanadium Industry Co., Ltd., Jinchuan Group Co., Ltd., Xi'an Nuobol Rare and Precious Metal Materials Co., Ltd.
company.
The main drafters of this document are. Zhao Huanjuan, Wang Xiaojing, Zhang Xiaoyan, Bin Mingyu, Chen Haonan, Qiu Changdan, Feng Jing, Zuo Hongyi,
Wang Zhiqing, Guan Shuping, Shi Jingjing, Yinan, Wang Fei, Lin Ye, Luo Feng.
Chemical analysis methods for niobium and hafnium alloys
Determination of trace impurity elements
Inductively Coupled Plasma Mass Spectrometry
1 Scope
This document describes the method for the determination of trace impurity element contents in niobium and hafnium alloys.
This document applies to lithium, beryllium, boron, magnesium, aluminum, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, arsenic, strontium,
Determination of molybdenum, cadmium, tin, antimony, lead, bismuth and uranium content. The determination range of iron is 0.000 5% to 0.010%; determination of other elements
The range is 0.000 1% to 0.010%.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies.
in this document.
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 17433 Basic terminology for chemical analysis of metallurgical products
3 Terms and definitions
The terms and definitions defined in GB/T 17433 apply to this document.
4 Principle
The sample was dissolved with hydrofluoric acid and nitric acid, and the content of lithium, beryllium, boron, magnesium, aluminum, vanadium, chromium,
Mass spectrometry intensity of manganese, iron, cobalt, nickel, copper, zinc, gallium, arsenic, strontium, molybdenum, cadmium, tin, antimony, lead, bismuth and uranium, matrix correction by internal standard method
The mass concentration of each impurity element is calculated using the working curve method, and the measurement results are expressed in mass fraction.
5 Reagents or materials
Unless otherwise stated, only reagents of confirmed high purity or higher were used in the analyses.
5.1 Water, GB/T 6682, Grade 1.
5.2 Hydrofluoric acid (ρ = 1.13 g/mL).
5.3 Nitric acid (ρ=1.42 g/mL).
5.4 Lithium, beryllium, boron, magnesium, aluminum, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, arsenic, strontium, molybdenum, cadmium, tin, antimony, lead,
Bismuth, uranium and rhodium single element standard stock solution. Use certified standard solution with a mass concentration of 100 μg/mL.
5.5 Mixed standard solution. Pipette 1.00 mL of lithium, beryllium, boron, magnesium, aluminum, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium,
Arsenic, strontium, molybdenum, cadmium, tin, antimony, lead, bismuth, and uranium standard stock solutions (5.4) are placed in a 100 mL plastic volumetric flask and 2 mL of nitric acid is added.
(5.3) and 1 mL of hydrofluoric acid (5.2), dilute to volume with water, and mix. This solution contains 1 μg of lithium, beryllium, boron, magnesium, aluminum,
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