Determination of hexamethylene-based isocyanates in spray-painting operations. Part 1. Evaluation of a polyurethane foam sponge sampler.
A polyurethane foam (PUF) sponge was mounted in a cassette sampler and evaluated as a sorbent for the collection of hexamethylene diisocyanate (HDI) monomer and HDI-based oligomers.
Recovery studies indicated 112 ± 34% average recovery of HDI monomer and 92 ± 9% and 97 ± 25% average recovery of HDI-based oligomers when using impregnated PUF sponges.
The PUF sponge was also evaluated during actual spray-painting operations.
In a series of side-by-side sampling events, an impinger filled with I- (2-methoxyphenyl) piperazine (MOP) in toluene was compared directly with a cassette sampler containing a PUF sponge impregnated with MOP or 1- (9-anthracenylmethyl) piperazine (MAP) in dimethyl sulfoxide (DMSO).
For the analysis of HDI-based oligomer, there is no significant difference (p<0.05, n=7) in the air concentration when sampling with either the PUF sponge cassette or the impinger.
The results are significant because they indicate that a PUF sponge, which is more convenient than an impinger, may be used for the collection of HDI-based oligomer generated during spray-painting operations.
Mots-clés Pascal : Analyse chimique, Analyse multiélément, Analyse trace, Isocyanate organique, Peinture huile, Chromatographie HPLC, Détecteur UV, Toxicologie
Mots-clés Pascal anglais : Chemical analysis, Multicomponent analysis, Trace analysis, Organic isocyanate, Oil paint, HPLC chromatography, Ultraviolet detector, Toxicology
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0523532
Code Inist : 001D10B07. Création : 23/03/1999.