ISO 15767:2009 PDF

Workplace atmospheres — Controlling and characterizing uncertainty in weighing collected aerosols

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ISO 15767:2009

Workplace atmospheres — Controlling and characterizing uncertainty in weighing collected aerosols

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 28
Дата публикации:: 25 мая 2009 г.
Издание:: ISO IS 15767 edition 2 version 1
ICS:: 13.040.30

Язык документа:

ruen

Срок поставки:5 раб. дн. (перевод)

Цена:420 €

Описание (английский):

ISO 15767:2009 provides recommendations for controlling the analytical uncertainty associated with aerosol collection medium instability, where collection medium or collection substrate includes any article used to collect particles (e.g. filter or foam material) as well as those supporting elements which must be analysed by weighing. ISO 15767:2009 is applicable to results compiled both from the literature and, if necessary and feasible, through laboratory experiment. Expected uncertainty associated with given aerosol capture methods is quantified where possible. Recommendations as to materials to be used are given. Means of minimizing uncertainty arising from instability are provided. Recommendations for the weighing procedure are given. A procedure for estimating weighing uncertainty is described. Finally, recommendations are given for the reporting of measured mass, including an uncertainty component and limits of detection and quantification.

Технические детали

Технический комитет: ISO/TC 146/SC 2 - Workplace atmospheres
SKU: ISO 15767:2009

Abstract

Overview

ISO 15767:2009 - Workplace atmospheres: Controlling and characterizing uncertainty in weighing collected aerosols provides recommendations to control and quantify analytical uncertainty when using gravimetric methods to determine aerosol mass on collection substrates (filters, foams, cassettes). The standard addresses instability of collection media, methods to minimize weighing errors, procedures to estimate weighing uncertainty, and guidance for reporting measured mass including limits of detection (LOD) and limits of quantification (LOQ).

Key topics and technical requirements

Sources of weight instability: moisture sorption, electrostatic effects, volatile compounds, handling damage and buoyancy changes.
Material selection and pre-treatment: recommendations on non‑sorptive or treated substrates and consideration of trade-offs (e.g., hydrophobicity vs conductivity).
Blanks and corrections: use of field blanks and lab blanks to correct for substrate instability and to account for double-weighing uncertainty.
Weighing procedure and equipment: guidance on balance selection, environmental controls, conditioning times, weighing sequence and sample handling to reduce variability.
Transport and packaging: recommended packaging and tests to maintain sample integrity during transport from field to laboratory.
Uncertainty quantification: procedure to estimate the uncertainty component (uw) for aerosol mass; definitions of LOD (three times estimated standard deviation) and LOQ (ten times estimated standard deviation) as applied to gravimetric aerosol analysis.
Annexes: normative and informative annexes cover calculation of uncertainty components, interpretation of LOD/LOQ, method evaluation examples, transportation integrity testing, and balance uncertainty checks.

Practical applications and users

ISO 15767:2009 is practical for professionals involved in workplace air monitoring and aerosol measurement:

Occupational hygienists performing gravimetric sampling for exposure assessment.
Analytical and testing laboratories implementing validated weighing procedures and uncertainty estimation.
Manufacturers of sampling media and cassettes designing low‑sorption, low‑electrostatic substrates.
Regulatory agencies and accreditation bodies requiring standardized reporting of measured mass with uncertainty, LOD and LOQ.
Researchers compiling literature or performing laboratory evaluations of aerosol capture methods.

This standard improves confidence in gravimetric aerosol results, supports accurate exposure assessments, and helps laboratories meet quality and reporting expectations for workplace atmospheres and air quality monitoring.

Related standards

ISO/IEC Guide 98-3 (GUM) for general principles of measurement uncertainty.
Other ISO standards on workplace atmospheres and air quality monitoring (see ISO technical committees for specific references).

Overview

Key topics and technical requirements

Sources of weight instability: moisture sorption, electrostatic effects, volatile compounds, handling damage and buoyancy changes.
Material selection and pre-treatment: recommendations on non‑sorptive or treated substrates and consideration of trade-offs (e.g., hydrophobicity vs conductivity).
Blanks and corrections: use of field blanks and lab blanks to correct for substrate instability and to account for double-weighing uncertainty.
Weighing procedure and equipment: guidance on balance selection, environmental controls, conditioning times, weighing sequence and sample handling to reduce variability.
Transport and packaging: recommended packaging and tests to maintain sample integrity during transport from field to laboratory.
Uncertainty quantification: procedure to estimate the uncertainty component (uw) for aerosol mass; definitions of LOD (three times estimated standard deviation) and LOQ (ten times estimated standard deviation) as applied to gravimetric aerosol analysis.
Annexes: normative and informative annexes cover calculation of uncertainty components, interpretation of LOD/LOQ, method evaluation examples, transportation integrity testing, and balance uncertainty checks.

Practical applications and users

ISO 15767:2009 is practical for professionals involved in workplace air monitoring and aerosol measurement:

Occupational hygienists performing gravimetric sampling for exposure assessment.
Analytical and testing laboratories implementing validated weighing procedures and uncertainty estimation.
Manufacturers of sampling media and cassettes designing low‑sorption, low‑electrostatic substrates.
Regulatory agencies and accreditation bodies requiring standardized reporting of measured mass with uncertainty, LOD and LOQ.
Researchers compiling literature or performing laboratory evaluations of aerosol capture methods.

Related standards

ISO/IEC Guide 98-3 (GUM) for general principles of measurement uncertainty.
Other ISO standards on workplace atmospheres and air quality monitoring (see ISO technical committees for specific references).

ISO 15767:2009 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Practical applications and users

Related standards

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