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Evaluation of tryptamine in an impinger and on XAD-2 for the determination of hexamethylene-based isocyanates in spray-painting operations.

Authors
Rudzinski-WE; Sutcliffe-R; Dahlquist-B; Key-Schwartz-R
Source
Analyst 1997 Jun; 122(6):605-608
NIOSHTIC No.
00238429
Abstract
The effectiveness of tryptamine (TR) as a derivatizing reagent was evaluated in actual field trials. Impinger sampling with 1-(2- methoxyphenyl)piperazine (MOPIP) in toluene and solid sorbent sampling with a TR coated XAD-2 resin were compared with impinger sampling with TR in dimethyl-sulfoxide (DMSO). Constant flow personal sampling pumps were used to obtain air samples. Four different spray paint operations were evaluated, including the spray painting of a tractor, a munitions cart, and an aircraft engine in spray booths. Area samples and personal samples were collected in the area of overspray and breathing zone, respectively. Hexamethylene-diisocyanate (822060) (HDI) was not detected in any samples when analyzed using NIOSH Method 5522, whereas the amount of HDI was between 0.5 and 1.0 microgram per sample when analyzed using NIOSH Method 5521. The amount of HDI detected with MOPIP was similar to that detected with TR/DMSO. The levels of HDI desorbed from an XAD-2 resin ranged from 0.005 to 0.021mg/m3. HDI collected in TR/DMSO ranged from 0.014 to 0.083mg/m3. The average sampling efficiency of the TR coated XAD-2 resin was 50% of that obtained with TR/DMSO, which was attributed to HDI reacting with polyols and atmospheric moisture before reacting with the derivatizing agents. The authors conclude that HDI is collected more efficiently with an impinger filled with TR in DMSO instead of a sorbent tube.
Keywords
Aerosol-sampling; Paint-spraying; Chemical-agent-detectors; Impingers; Painting; Isocyanates; Amines; Air-sampling; Sampling-methods; Author Keywords: Isocyanates; tryptamine; 1-(2-methoxyphenyl)piperazine; XAD-2 resin; impinger sampling
Contact
Chemistry Southwest Texas State Univ 601 University DR San Marcos, TX 78666-4616
CODEN
ANALAO
CAS No.
822-06-0
Publication Date
19970601
Document Type
Journal Article
Funding Amount
88710
Funding Type
Grant
Fiscal Year
1997
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-003295
Issue of Publication
6
ISSN
0003-2654
Priority Area
Research Tools and Approaches: Exposure Assessment Methods
Source Name
Analyst
State
TX
Performing Organization
Southwest Texas State University, San Marcos, Texas
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