GB/T 41752-2022 (English Version) PDF

Standard No.: GB/T 41752-2022
Language: Chinese, Available in English version
Release Date: 2022
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 41752-2022

Scope: This document describes the use of reference gas mixtures or reference analysis procedures for analysis and correction of bias (systematic error) in gas analysis procedures, as well as general methods for assessing the uncertainty of correction values. The main sources of (and contributors to) analytical procedure bias are instrument drift and matrix interferences, which typically vary with analyte concentration. Therefore, this document describes the following two methods: --- Drift analysis and correction of analytical systems with limited stability; Subsequent method development and method validation studies were used. This document establishes two procedures applicable to the analysis of system effects: a) retrospectively model observed biases and correct their effects; b) average system effects and scale up uncertainties. Usually, the first procedure requires more work, but can obtain smaller uncertainties. For ease of use, the methods described in this document are used to analyze gas composition procedures, for example, the measurement procedure for the concentration of a specific analyte in a mixed gas. These methods are equally applicable to the measurement of physical or chemical properties of pure or mixed gases in relation to gas analysis.

GB/T 41752-2022 Referenced Document

GB/T 27418-2017 Guide to the evaluation and expression of uncertainty in measurement
GB/T 6379.3 Accuracy(trueness and precision) of measurement methods and results.Part 3:Intermediate measures of the precision of a standard measurement method
ISO 6143:2001 Gas analysis - Comparison methods for determining and checking the composition of calibration gas mixtures

2022 GB/T 41752-2022 Gas analysis—Investigation and treatment of analytical bias