Analysis of gaseous diisocyanates in air using chemosorption sampling

Journal Article · Thu Dec 31 23:00:00 EST 1981 · Chemosphere; (United States)

DOI:https://doi.org/10.1016/0045-6535(82)90083-2· OSTI ID:5656932

Andersson, K ^[1]; Gudehn, A; Levin, J O; Nilsson, C A

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1. National Board of Occupational Safety and Health, Umea, Sweden

A sampling procedure for 2,4- and 2,6-toluenediisocyanate (TDI) and 4,4'-diphenylmethane diisocyanate (MDI) in the range 0.007-0.7 mg/m/sup 3/ in a 15 L air sample is described. The sampling is performed with 9-(N-methylaminomethyl)-anthracene (MAMA) adsorbed on a solid sorbent, Amberlite XAD-2. The recoveries are 80-100% in this chemosorption reaction. The urea derivatives are desorbed with N,N-dimethylformamide and analyzed by high performance liquid chromatography (HPLC). Samples and prepared chemosorption tubes are stable for at least two weeks if stored in the dark. To complete the investigation, field measurements of TDI were performed in an industrial atmosphere.

• OSTI ID: 5656932
• Journal Information: Chemosphere; (United States), Journal Name: Chemosphere; (United States) Vol. 11:1; ISSN CHESB
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR
AMIDES
CARBONIC ACID DERIVATIVES
CHEMICAL REACTIONS
CHEMISORPTION
CHROMATOGRAPHY
FIELD TESTS
FLUIDS
GASES
INDUSTRIAL PLANTS
ION EXCHANGE MATERIALS
ISOCYANATES
LIQUID COLUMN CHROMATOGRAPHY
MATERIALS
ORGANIC COMPOUNDS
ORGANIC ION EXCHANGERS
ORGANIC NITROGEN COMPOUNDS
SAMPLING
SEPARATION PROCESSES
SORPTION
TESTING
UREA