NIOSHTIC-2 Publications Search

In situ sampling techniques in environmental air analysis. Final report.

Authors
Mark HB
Source
Cincinnati OH: University of Cincinnati, 1980 Jan; :1-7
Link
NIOSHTIC No.
00134971
Abstract
Adsorbent sampling matrices specific for hydrogen-sulfide (7783064) (H2S) and acrylonitrile (107131) were assessed. Cadmium(II)/exchanged zeolite was found to be effective in adsorbing H2S in the concentration ranges necessary for personal monitoring. H2S reacted with the matrix to produce cadmium-sulfide (1306236) (CdS). Immobilized CdS was converted to methylene-blue (61734), and then determined spectrophotometrically. The detection limit was 35microg H2S could be determined. Known amounts of H2S adsorbed on the zeolite were analyzed by a variety of techniques including diffuse reflectance Fourier transform infrared, X-ray fluorescence, combustion analysis followed by non dispersive infrared, and photoacoustic spectroscopy. Photoacoustic spectroscopy yielded the greatest general potential and sensitivity. A titanium/exchanged zeolite was found to be effective for adsorbing acrylonitrile. After adsorption, the zeolite was pressed into a potassium-bromide pellet and the sample was analyzed by transmission infrared spectroscopy. Concentrations of acrylonitrile up to 50 parts per million could be determined.
Keywords
NIOSH-Grant; Toxic-vapors; Analytical-methods; Quantitative-analysis; Measurement-equipment; Trace-analysis; Spectrographic-analysis; Air-quality-measurement; Safety-equipment
CAS No.
7783-06-4; 107-13-1; 1306-23-6; 61-73-4
Publication Date
19800101
Document Type
Final Grant Report
Funding Amount
82242
Funding Type
Grant
Fiscal Year
1980
NTIS Accession No.
PB84-241439
NTIS Price
A02
Identifying No.
Grant-Number-R01-OH-00632
NIOSH Division
OEP
Source Name
In situ sampling techniques in environmental air analysis. Final report
State
OH
Performing Organization
Chemistry University of Cincinnati Department of Chemistry Cincinnati, Ohio 45221
Page last reviewed: July 10, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division