NIOSHTIC-2 Publications Search

A new passive sampler for regulated workplace aldehydes.

Authors
Tsai S-W; Que Hee S
Source
Appl Occup Environ Hyg 1999 Apr; 14(4):255-262
NIOSHTIC No.
20024502
Abstract
A new solid sorbent passive air sampler for aldehydes had a silicone membrane atop a cylindrical diffusion path of 1.1 cm length and 1.3 cm diameter above a 10 percent (w/w) O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA) Tenax TA pellet. Known vapor concentrations of Occupational Safety and Health Administration (OSHA)-regulated aldehydes near their permissible exposure limits were generated from a syringe pump dynamic air dilution system that was connected to an exposure chamber. The O-oxime derivatives from aldehyde reaction with PFBHA were desorbed with hexane, and quantified by capillary gas chromatography/mass spectrometry (GC/MS) or gas chromatography/electron capture detection (GC/ECD). The capacity for aldehydes with one carbonyl group was 30-35 mumoles, and 15 mumoles for the dialdehyde, glutaraldehyde. The experimental sampling rates in mL/min were 8.86 +/- 0.38, acetaldehyde; 11.69 +/- 0.32, chloroacetaldehyde; 7.85 +/- 0.19, crotonaldehyde; 9.97 +/- 0.10, formaldehyde; 6.47 +/- 0.42, furfural; and 4.46 +/- 0.15, glutaraldehyde. Other data on valeraldehyde and acrolein have shown that the sampling constants were independent of face velocity between 0.1 to 0.35 m/s (20 to 70 fpm), temperatures between 9 to 48 degrees C, RH between 3 to 79 percent, and intermittent sampling exposure pattern.
Keywords
Air-sampling; Air-sampling-techniques; Sampling-methods; Workplace-monitoring; Gas-chromatography; Aldehydes; Exposure-limits; Mass-spectrometry; Author Keywords: Adsorption; Aldehyde; Aldehyde Oxime; Gas Chromatography; Passive Sampler; Personal Sampling
Contact
Shih-Wei Tsai, Department of Environmental Health Sciences and Center for Occupational and Environmental Health, School of Public Health, University of California at Los Angeles, Los Angeles, California
CODEN
AOEHE9
CAS No.
5470-11-1; 75-07-0; 111-30-8; 107-20-0; 4170-30-3; 50-00-0; 98-01-1
Publication Date
19990401
Document Type
Journal Article
Funding Amount
515055
Funding Type
Grant
Fiscal Year
1999
Identifying No.
Grant-Number-R01-OH-003120; Grant-Number-T42-CCT-918726
Issue of Publication
4
ISSN
1047-322X
Priority Area
Research Tools and Approaches: Exposure Assessment Methods
Source Name
Applied Occupational and Environmental Hygiene
State
CA
Performing Organization
University of California Los Angeles, Los Angeles, CA
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division