|Document ID (ISN)||63377|
|Convention or series no.
Health and Safety Executive, Occupational Medicine and Hygiene Laboratory
||Formaldehyde in air
||HSE Books, P.O. Box 1999, Sudbury CO10 6FS, Suffolk, United Kingdom, May 1994. 4p. 17 ref.
||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.
||formaldehyde; determination in air; sampling and analysis; United Kingdom
||description of equipment; high performance chromatography; data sheet; description of technique; air sampling
||F - Information notes, codes of practice, standards
|Country / State or Province||United Kingdom|
||Toxic and dangerous substances
|Broad subject area(s)