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 1-(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.
Rudzinski
W E
WE
Department of Chemistry, Southwest Texas State University, San Marcos 78666, USA.
Yin
J
J
Norman
S H
SH
Glaska
D A
DA
D000393:Air Pollutants / Q000032:analysis*; D000818:Animals; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D003485:Cyanates / Q000032:analysis*; D005069:Evaluation Studies as Topic; D017953:Isocyanates; D010150:Paint; D011095:Polyethylenes
D000393:Air Pollutants; D003485:Cyanates; D017953:Isocyanates; D011095:Polyethylenes; C015262:1,6-hexamethylene diisocyanate