SIST ISO 16000-4:2013 PDF
Indoor air - Part 4: Determination of formaldehyde - Diffusive sampling method
Indoor air - Part 4: Determination of formaldehyde - Diffusive sampling method
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 17
- Дата публикации:
- 18 марта 2013 г.
- ICS:
- 13.040.20
- Технический комитет:
- KAZ - Air quality
ISO 16000-4:2011 specifies a determination of formaldehyde in indoor air using a diffusive sampler with solvent desorption and high performance liquid chromatography (HPLC). The test method is applicable to the measurement of formaldehyde in indoor air over the range from 0,001 mg/m3 to 1,0 mg/m3 for a sampling period of between 24 h and 72 h. For sampling periods of 24 h, the applicable concentration range is 0,003 mg/m3 to 1 mg/m3, and for 72 h it is 0,001 mg/m3 to 0,33 mg/m3. The method is suitable for measurements in atmospheres with conventional indoor air relative humidity and for monitoring at air velocities as low as 0,02 m/s. The chromatographic step in the method is designed to eliminate potential interferences, including those due to the presence of other carbonyl compounds. The sampling method gives a time-weighted average result.
Abstract
Overview
ISO 16000-4:2011 specifies a validated laboratory procedure for the determination of formaldehyde in indoor air using a diffusive sampling (passive) method with solvent desorption and HPLC analysis. The method yields a time-weighted average concentration and is applicable to typical indoor environments (residences, offices, schools) and controlled test-chamber measurements. It covers measurement ranges from 0.001 mg/m³ to 1.0 mg/m³ depending on sampling duration and is designed to reduce interferences from other carbonyl compounds.
Key Topics
- Sampling principle: Passive/diffusive sampler calibrated by a known diffusive uptake rate; formaldehyde diffuses onto a DNPH-coated silica gel/cellulose strip and forms a stable hydrazone.
- Analytical technique: Solvent desorption (acetonitrile) of DNPH-formaldehyde derivative followed by HPLC-UV analysis for quantification.
- Applicable ranges & sampling periods:
- Overall: 0.001–1.0 mg/m³ for 24–72 h sampling.
- 24 h sampling: 0.003–1.0 mg/m³.
- 72 h sampling: 0.001–0.33 mg/m³.
- Shorter sampling (
Технические детали
- SKU
- SIST ISO 16000-4:2013
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