ASTM-D7440 2023(Redline)

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D7440-23 Standard Practice for Characterizing Uncertainty in Air Quality Measurements (Redline)

Published By	Publication Date	Number of Pages
ASTM	2023

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Categories: 13.040.20 - Ambient atmospheres, ASTM

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Description

ASTM D7440-23

Redline Standard: Standard Practice for Characterizing Uncertainty in Air Quality Measurements

ASTM D7440

Scope

1.1 This practice is for assisting developers and users of air quality methods for sampling concentrations of both airborne and settled materials in characterizing measurements as to uncertainty. Where possible, analysis into uncertainty components as recommended in the International Organization for Standardization (ISO) Guide to the Expression of Uncertainty in Measurement (ISO GUM, (1)2) is suggested. Aspects of uncertainty estimation particular to air quality measurement are emphasized. For example, air quality assessment is often complicated by: the difficulty of taking replicate measurements owing to the large spatio-temporal variation in concentration values to be measured; systematic error or bias, both corrected and uncorrected; and the (rare) non-normal distribution of errors. This practice operates mainly through example. Background and mathematical development are relegated to appendices for optional reading.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

air quality; characterizing uncertainty; measurements;

ICS Code

ICS Number Code 13.040.20 (Ambient atmospheres)

DOI: 10.1520/D7440-23

Additional information

Standard Title	D7440-23 Standard Practice for Characterizing Uncertainty in Air Quality Measurements (Redline)
Published Code	ASTM
Publication Date	2023
ICS Codes	13.040.20 - Ambient atmospheres