SIST ISO 9486:1995 PDF

Name: SIST ISO 9486:1995 — Workplace air - Determination of vaporous chlorinated hydrocarbons - Charcoal tube/solvent desorption/gas chromatographic method
SKU: SIST ISO 9486:1995
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Workplace air - Determination of vaporous chlorinated hydrocarbons - Charcoal tube/solvent desorption/gas chromatographic method

Название (английский):

SIST ISO 9486:1995

Workplace air - Determination of vaporous chlorinated hydrocarbons - Charcoal tube/solvent desorption/gas chromatographic method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 1 декабря 1995 г.
ICS:: 13.040.30
Технический комитет:: KAZ - Air quality

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Описание (английский):

Specifies a method for the measurement of the concentrations of airborne vapours in the range from approx. 1 mg/m^3 to 1 000 mg/m^3 when sampling 10 litres of air. Annexes A, B and C form an integral part of this standard. Annex D is for information only.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 9486:1991 specifies a validated laboratory and field method for measuring vaporous chlorinated hydrocarbons in workplace air using a charcoal tube / solvent desorption / gas chromatography procedure. The method covers airborne vapour concentrations from approximately 1 mg/m³ to 1 000 mg/m³ (when sampling ~10 litres of air) and is suitable for personal and fixed-location time‑weighted‑average monitoring. Annexes A, B and C are integral; Annex D is informative.

Key search terms: ISO 9486:1991, workplace air monitoring, chlorinated hydrocarbons, charcoal tube sampling, solvent desorption, gas chromatography, occupational hygiene, vapour monitoring.

Key topics and technical requirements

Analytes covered: includes dichloromethane, chloroform, carbon tetrachloride, 1,1‑dichloroethane, 1,2‑dichloroethane, various dichloro/ trichloro/ tetrachloroalkanes and chlorobenzenes listed in the standard.

Sampling media: glass charcoal tubes (70 mm length, ~6 mm OD) with two sections - typically 100 mg adsorbent front and 50 mg back-up (coconut shell charcoal, particle size 0.4–0.8 mm). Larger tubes (e.g., 400 + 200 mg) recommended for some low-breakthrough compounds or long-term sampling.

Charcoal preparation: activated charcoal pretreated (e.g., heated in inert atmosphere at 600 °C) and handled to avoid recontamination.

Sampling equipment: wearable pump with stable flow (volume within ±10% and flow constant within ±5%) capable of typical low flow rates (recommended sampling rates in table; common range 10–200 ml/min, with short‑term sampling possible at up to 200 ml/min).

Desorption & analysis: solvent desorption (commonly carbon disulfide) and analysis by gas chromatography (FID normally; ECD or other detectors recommended where selectivity/sensitivity require). Desorption efficiency must be checked; tubes with efficiency < 0.75 (75%) shall not be used.

Quality control & limits: detector sensitivity example - able to detect ~5 ng trichloroethene with S/N ≥ 5. Breakthrough volumes are compound‑ and condition‑dependent (humidity, temperature, concentration) and must be verified (Annex A). Use blanks and storage precautions (freeze or dry ice if analysis >8 h).

Safety notes: carbon disulfide is toxic and highly flammable; chloroform and carbon tetrachloride are suspect carcinogens - handle per local safety rules.

Applications and users

Occupational hygienists and safety officers conducting personal exposure monitoring

Industrial and environmental laboratories performing compliant vapor monitoring

Employers and consultants assessing compliance with workplace exposure limits

Manufacturers of sampling tubes, pumps and analytical GC services

Regulatory bodies and auditors verifying measurement methods and quality control

Related standards & guidance

Referenced ISO standards on precision and calibration (e.g., ISO 5725, ISO 6145) and Annex C for GC column guidance. Annexes A–C in ISO 9486 provide required validation, breakthrough and desorption procedures.

This standard provides a reproducible, widely accepted protocol for accurate measurement of chlorinated solvent vapours in occupational air using charcoal adsorption and GC analysis.

SIST ISO 9486:1995 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards & guidance

Технические детали

ISO 9486:1991

Workplace air — Determination of vaporous chlorinated hydrocarbons — Charcoal tube/solvent desorption/gas chr…

ISO 5725-6:1994/Cor 1:2001

Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy va…

SIST EN ISO 6145-1:2019

Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 1: General aspects (ISO 6…