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CISDOC database

Document ID (ISN)63377
CIS number 94-2039
ISBN(s) 0-7176-0678-3
Year 1994
Convention or series no. MDHS 78
Health and Safety Executive, Occupational Medicine and Hygiene Laboratory
Title Formaldehyde in air
Bibliographic information HSE Books, P.O. Box 1999, Sudbury CO10 6FS, Suffolk, United Kingdom, May 1994. 4p. 17 ref.
Abstract This data sheet describes a laboratory method for the determination of formaldehyde in air. A diffusive sampler is exposed to air for a measured time period. The formaldehyde vapour migrates into the sampler by diffusion and is collected on a strip of silica gel tape coated with 2,4-dinitrophenylhydrazine and phosphoric acid. A stable hydrazone species is formed which can be desorbed by either methanol or acetonitrile and the solution is analyzed with a high performance liquid chromatograph equipped with a UV detector. The method may be used for sampling over periods in the range 15min to 8h and is suitable for the measurement of airborne formaldehyde vapour in the concentration range 0.1 to 4.0mg/m3.
Descriptors (primary) formaldehyde; determination in air; sampling and analysis; United Kingdom
Descriptors (secondary) description of equipment; high performance chromatography; data sheet; description of technique; air sampling
Document type F - Information notes, codes of practice, standards
Country / State or ProvinceUnited Kingdom
Subject(s) Toxic and dangerous substances
Broad subject area(s) Chemical safety
Browse category(ies) Aldehydes