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GB/T 42360-2023 English PDF

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US$424.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42360-2023: Surface chemical analysis - Total reflection X-ray fluorescence analysis of water
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42360-2023	424	Add to Cart	4 days	Surface chemical analysis - Total reflection X-ray fluorescence analysis of water	Valid

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Basic data

Standard ID: GB/T 42360-2023 (GB/T42360-2023)
Description (Translated English): Surface chemical analysis - Total reflection X-ray fluorescence analysis of water
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G04
Classification of International Standard: 71.040.40
Word Count Estimation: 23,280
Date of Issue: 2023-03-17
Date of Implementation: 2023-07-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42360-2023: Surface chemical analysis - Total reflection X-ray fluorescence analysis of water

---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.
ICS71:040:40 CCSG04 National Standards of People's Republic of China GB/T 42360-2023/ISO 20289:2018 Surface Chemical Analysis Total reflection X-ray fluorescence spectroscopic analysis of water (ISO 20289:2018, IDT) Released on 2023-03-17 2023-07-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Symbols and abbreviations3 5 Security 3 6 Interference 3 7 Instruments and equipment 4 8 Reagents, Standard Samples and Materials 4 9 Sample preparation 5 10 Measurement procedure 6 11 Qualitative and quantitative analysis 7 12 Quality Control 8 13 Precision and Accuracy 8 14 Test Report 9 Appendix A (Informative) TXRF Measurement Uncertainty 10 Appendix B (Informative) Method Validation 12 Reference 17

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: This document is equivalent to ISO 20289:2018 "Total reflection X-ray fluorescence spectroscopic analysis of water for surface chemical analysis": Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document was proposed and managed by the National Microbeam Analysis Standardization Technical Committee (SAC/TC38): This document is drafted by: China Institute of Metrology, Sinopec Petrochemical Research Institute Co:, Ltd:, Suzhou Xire Energy Conservation and Environmental Protection Technology Co:, Ltd:, Beijing University of Chemical Technology, Jihua Laboratory: The main drafters of this document: Wang Hai, Qiu Limei, Wang Lele, Cheng Bin, Yao Yan, Fan Yan, Zhang Airui, Wang Meiling, Ren Danhua:

Introduction

Total reflection X-ray fluorescence spectroscopy (TXRF) is a surface-sensitive technique that can be used to obtain composition information of different kinds of samples: ISO /T S18507 provides guidelines for characterizing biological and environmental samples using TXRF: Calibrated by internal standard[1,2], TXRF is suitable for elemental determination of thin films formed by liquid samples deposited on the surface of clean and well-polished reflectors: quantitative analysis: This document provides guidelines and requirements for the quantitative analysis of elements in water by TXRF: Surface Chemical Analysis Total reflection X-ray fluorescence spectroscopic analysis of water

1 Scope

This document describes the chemistry used by analysts to perform measurements on water samples using total reflection X-ray fluorescence (TXRF) instruments: good basis According to the operating practice, the method has a certain accuracy and precision: This document is suitable for carrying out routine analysis of a large number of samples and according to ISO / IEC 170251) operating laboratory: 1) GB/T 27025-2019 General requirements for the competence of testing and calibration laboratories (ISO /IEC 17025:2017, IDT): This document describes methods for the determination of dissolved element content in water (eg, drinking water, surface water, groundwater): Taking into account specific and According to this method, the elements in waste water and eluent can also be determined according to the interference occurring outside: This document does not cover sampling, dilution and preconcentration methods: The elements that can be determined by this method will change with the change of the X-ray source of the instrument: This document does not address health, safety and commercial factor: The measuring range depends on the sample matrix and interferences encountered: Limits of quantification for most elements in drinking water and relatively unpolluted water Between 0:001mg/L~0:01mg/L: The measurement range is usually between the concentration range of 0:001mg/L~10mg/L, depending on the measurement unit elements and pre-set requirements: Appendix B gives an example of complete method validation for TXRF analysis of water samples when the molybdenum target X-ray source and Ga are used as the calibration internal standard: Limits of quantitation for most elements can be affected by blank contamination and are largely dependent on the laboratory air handling equipment used and the The purity of reagents and the cleanliness of laboratory equipment:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: and testmethods) Note: GB/T 6682-2008 Analytical Laboratory Water Specifications and Test Methods (ISO 3696:1987, MOD) ISO 5667-1 Water quality sampling Part 1: Guidelines for the design of sampling schemes and sampling techniques (Waterquality-Sampling- Note: GB/T 12997-1991 Water Quality Sampling Scheme Design Technical Regulations (ISO 5667-1:1980, IDT) ISO 5667-3 Water quality sampling Part 3: Guidelines for preservation and handling of water samples (Waterquality-Sampling-Part 3: Note: GB/T 12999-1991 Technical regulations for storage and management of water quality sampling samples (ISO 5667-3:1985, NEQ) ISO 5725-1 Accuracy (trueness and precision) of measurement methods and results - Part 1: General principles and definitions [Accuracy actions] Note: GB/T 6379:1-2004 Accuracy of measurement methods and results (trueness and precision) Part 1: General principles and definitions (ISO 5725-1: 1994, IDT) ISO 5725-2 Accuracy (trueness and precision) of measurement methods and results - Part 2: Determining the repeatability of standard measurement methods ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42360-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42360-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 42360-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42360-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.