GB/T 41752-2022 Active National standards

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

Publish Date: 2022-10-12 Implement Date: 2022-10-12 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 41752-2022

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Industrial gases and chemical gases

ICS Name: Industrial gases

Publish Date: 2022-10-12

Implement Date: 2022-10-12

Pages: 29 pages

Scope

This document describes the methods used to analyze and correct biases (systematic errors) in gas analysis procedures using reference gas mixtures or reference analysis procedures, as well as a general method for assessing the uncertainty of the correction values.
The main sources (and influencing factors) of biases in analysis procedures are instrument drift and matrix interference, which typically vary with the concentration of the analyte. Therefore, this document describes the following two methods:
—— Analysis and correction of drift in analysis systems with limited stability;
—— For stable analysis systems with a known gas sample composition, the biases can be studied and mastered, and then applied in subsequent method development and method validation studies.
This document establishes two procedures applicable to the influence of analysis systems:
a) Tracing the observed deviation model and correcting its impact;
b) Averaging the system influence and expanding the uncertainty.
Generally, the first procedure requires more effort, but can achieve smaller uncertainties.
For ease of use, the methods described in this document are all used in procedures for analyzing gas compositions, such as the measurement of the concentration of a specific analyte in a mixed gas. These methods are also applicable to the measurement of the physical or chemical properties of pure gases or mixed gases related to gas analysis.