GB/T 38257-2019 English PDF

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GB/T 38257-2019: Laser-induced breakdown spectroscopy
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 38257-2019	279	Add to Cart	3 days	Laser-induced breakdown spectroscopy	Valid

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Basic data

Standard ID: GB/T 38257-2019 (GB/T38257-2019)
Description (Translated English): Laser-induced breakdown spectroscopy
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L50
Classification of International Standard: 17.180.99
Word Count Estimation: 14,179
Date of Issue: 2019-12-10
Date of Implementation: 2020-07-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 38257-2019: Laser-induced breakdown spectroscopy

---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.
Laser-induced breakdown spectroscopy ICS 17.180.99 L50 National Standards of People's Republic of China Laser induced breakdown spectroscopy 2019-12-10 release 2020-07-01 implementation State Administration of Market Supervision Published by the National Standardization Management Committee

Contents

Foreword I 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Basic principles 3 5 Test conditions 3 6 Equipment and devices 3 6.1 Component 3 6.2 Laser light source system 3 6.3 Laser focusing system 4 6.4 Plasma radiation collection system 4 6.5 Spectrometer 4 6.6 Control circuit and data processing system 4 7 Sample 4 7.1 Samples and substances to be analyzed 4 7.2 Matrix effects of the sample 4 7.3 Non-uniformity of the sample 4 7.4 Sample preparation and pretreatment 4 8 Test step 5 8.1 Start-up warm-up 5 8.2 Parameter setting 5 8.3 Calibration of Spectrum Intensity 5 8.4 Spectral Acquisition 5 8.5 Spectral preprocessing 6 9 Data processing 6 9.1 Qualitative analysis 6 9.2 Quantitative analysis 7 9.3 Semi-Quantitative Analysis 9 10 Test report 9 Appendix A (informative) Test report format 10

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some elements of this document may involve patents. The issuer of this document is not responsible for identifying these patents. This standard is proposed by the Chinese Academy of Sciences. This standard is under the jurisdiction of the National Technical Committee for Photoelectric Measurement Standardization (SAC/TC487). This standard was drafted. Institute of Optoelectronics, Chinese Academy of Sciences, Beijing Guoke Century Laser Technology Co., Ltd., Shanghai Jiaotong University, Steel Research and Development Keysight Technology Co., Ltd., Beijing Institute of Technology, Tsinghua University, Dalian University of Technology, Ocean University of China, Huazhong University of Science and Technology, Sichuan University, Shanxi University, Northwest Normal University, Beijing Physical and Chemical Analysis and Testing Center, South China University of Technology, Anhui University, Chinese Academy of Sciences Xi'an Guang Institute of Precision Machinery, Beijing University of Chemical Technology, Changchun University of Technology, Northwest University, Nanjing Advanced Laser Technology Research Institute, Shandong Dongyi Optoelectronics Instrument Co., Ltd., Shandong Huatang Environmental Protection Technology Co., Ltd., Hebei Iron and Steel Group Research Institute of Iron and Steel Technology. The main drafters of this standard. Zhao Tianzhuo, Fan Zhongwei, Xiao Hong, Lu Yonghong, Yu Jin, Jia Yunhai, Wang Qianqian, Ding Hongbin, Wang Zhe, Ma Xiaohong, Li Xiangyou, Li Ying, Sun Duoxi, Dong Chenzhong, Zheng Ronger, Lu Jidong, Lin Xiaomei, Duan Yixiang, Li Hua, Pan Congyuan, Wang Yu, Zhang Yong, Zhang Lei, Liu Jia, Chen Guofei, Yao Shunchun, Lin Qingyu, Zu Wenchuan, Hai Ran, Zhu Xiangping, Lu Zhi, Nie Shuzhen, Lian Fuqiang, Liu Yang, Lin Weiran, Sun Sining, Hou Liqun, Liu Yanli, Liu Zheng, Tang Jing, Li Xin, Zhong Qixiu. Laser induced breakdown spectroscopy

1 Scope

This standard specifies the terms and definitions, basic principles, test conditions, equipment and devices, samples, and test procedures of laser-induced breakdown spectroscopy. Procedures, data processing and test reports. This standard applies to the detection and analysis of chemical elements of solid, liquid and gaseous substances.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB 7247.1 Safety of laser products. Part 1. Equipment classification and requirements GB/T 13966-2013 terminology for analytical instruments GB/T 14666-2003 Analytical Chemistry Terms

3 terms and definitions

The terms and definitions defined in GB/T 13966-2013 and GB/T 14666-2003 and the following apply to this document. 3.1 Plasma is formed by laser ablation of the substance to be analyzed, in which excited atoms, ions or molecules transition to low energy levels or ground states At that time, photons with a specific energy are emitted outward to form a characteristic spectrum, thereby obtaining the chemical composition or other characteristics of the substance to be analyzed. 3.2 Laser-induced plasma Plasma generated by laser ablation. Note. The above plasma generally contains electrons, atoms, molecules, positive and negative ions, and micro-nano particles. 3.3 Standard sample It has the accuracy to meet the needs of analysis, assign value to the substance to be analyzed, evaluate the measurement method, and calibrate or verify the substance of the equipment. 3.4 Calibration curve Under specified conditions, it represents the relationship between the content of the element to be analyzed and the measured spectral intensity value. Note 1. The calibration curve is also called the calibration curve. Note 2. Rewrite GB/T 13966-2013, definition 2.89. 3.5 Qualitative analysis Determine whether the element to be analyzed contains the element according to the characteristic spectral line of the laser-induced plasma spectrum Analytical methods. Note 1. Analytical methods for classifying substances based on spectral characteristics are also called qualitative analysis. Note 2. Rewrite GB/T 13966-2013, definition 2.2. ......

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