SIST ISO 23506:2025 PDF

Name: SIST ISO 23506:2025 — Workplace air - Analysis of airborne water immiscible mineral oil droplets and vapor with Fourier - Transform infrared spectroscopy
SKU: SIST ISO 23506:2025
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Workplace air - Analysis of airborne water immiscible mineral oil droplets and vapor with Fourier - Transform infrared spectroscopy

Название (английский):

SIST ISO 23506:2025

Workplace air - Analysis of airborne water immiscible mineral oil droplets and vapor with Fourier - Transform infrared spectroscopy

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 30
Дата публикации:: 10 ноября 2025 г.
ICS:: 13.040.30
Технический комитет:: KAZ - Air quality

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Описание (английский):

The method described in this document quantifies the absolute exposure to mineral oil vapours and droplets, within a concentration range from 0,5 mg/m3 to 125 mg/m3, in the inhalable fraction of the workplace air. This document contains comprehensive information and instructions on the equipment and chemicals to be used. This method is applicable for water soluble oils and metal working fluids.

Abstract

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Стандарты, упомянутые в описании

Overview

ISO 23506:2021 - "Workplace air - Analysis of airborne water immiscible mineral oil droplets and vapor with Fourier‑Transform infrared spectroscopy (FTIR)" - defines a validated laboratory and sampling method to quantify mineral oil exposure in the inhalable fraction of workplace air. The standard covers combined collection of mineral oil droplets and vapours using a filter-plus-polymer resin sampler and analysis by FTIR in the 3 000–2 800 cm⁻¹ region. It specifies the concentration range (0.5 mg/m³ to 125 mg/m³), required equipment, sample preparation, calibration and evaluation procedures, and provides guidance on uncertainty and validation.

Key Topics and Requirements

Scope and measurement range: Quantification of mineral oil vapours and droplets in the inhalable fraction from 0.5 mg/m³ to 125 mg/m³.

Sampling principle: Air is drawn through a glass fibre filter (droplets) with a downstream polymer resin tube (vapours). The sampler system used in the document (GGP) enables simultaneous collection of droplets and vapours.

Analytical technique: Extracted samples are analysed by FTIR (wavenumber 3 000–2 800 cm⁻¹) targeting C–H bond absorptions; the method detects all C–H containing substances, so it is not specific to mineral oil alone.

Apparatus and reagents: Detailed requirements for collecting materials, sampler hardware, polymer resin preparation (drying, sieving, purification), solvents and glassware. Polymer purification steps include preparatory ethanol cleaning and tetrachloroethene treatment as given in the standard.

Calibration and validation: Procedures for stock solutions, calibration standards (including liquid paraffin calibration), FTIR scanning parameters, instrument background, and sample measurement. The method has been validated (per EN 13936 and ISO 20581) with an expanded measurement uncertainty typically in the 20–30% range.

Limitations / interferences: Method responds to any substances with C–H bonds collected on the sampler; droplets can vaporize and transfer to resin, so distinction between gas and droplet fractions can be limited.

Applications and Users

Occupational hygienists and industrial hygiene laboratories measuring worker exposure to mineral oils in metalworking, machining, lubrication processes, and other industrial settings.

Employers and HSE professionals implementing workplace monitoring programs and corrective controls for airborne oils.

Regulatory bodies and consultants requiring a standardized, validated method for routine monitoring, exposure assessment, and compliance reporting.

The method is applicable to water soluble oils and metal working fluids, as stated in the document.

SIST ISO 23506:2025 PDF

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Applications and Users

Related Standards

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