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Fourier transform infrared least-squares methods for the quantitative analysis of multicomponent mixtures of airborne vapors of industrial hygiene concern.

Authors
Ying-L; Levine-SP
Source
Anal Chem 1989 Apr; 61(7):677-683
NIOSHTIC No.
00187693
Abstract
A quantitative determination was conducted to determine the concentration of six mixtures in ambient air. The components of the two to six substance mixtures were present in concentrations ranging from 50 to 100 parts per billion. The analytical method used was fourier transform/infrared spectroscopy (FT-IR). Evaluations were made of the optimal least squares fit method selected, background reference file chosen, and quantitative peak windows picked. For some of the components, the FT-IR method was accurate to the 0.1 part per million (ppm) level. For other determinations accuracy was attainable to the 50, 10, and 1ppm levels. The six components in one mixture studied included 2-propanol, (67630) ethyl-ether (60297), 3-chloropropene (107051), styrene (100425), ethylbenzene (100414), and Freon-11 (75694). Other mixtures consisted of toluene (108883), 1,1,1-trichloroethane (71556), 1,4-dioxane (123911), acetone (67641), and 1,2-dichloroethane (107062); vinyl-chloride (75014), benzene (71432), methylene-chloride (75092), 1,1- dichloroethene (75354), and trichloroethene (79016); 2-butanone (78933), hexane (110543), 4-methyl-2-pentanone (108101), tetrachloroethylene (127184), and 1,4-dioxane; cyclopentane (287923), ethyl-acetate (141786), 1,1-dichloroethane, 1,1,2- trichloroethane (79005), and carbon-tetrachloride (56235); and chlorobenzene (108907) with o-chlorotoluene (95498). The authors conclude that FT-IR spectrometry can be used to identify and quantify the industrial compounds present in multicomponent mixtures.
Keywords
NIOSH-Author; Analytical-chemistry; Chemical-analysis; Air-quality-monitoring; Air-sampling-techniques; Quantitative-analysis; Environmental-contamination; Hydrocarbons; Chlorinated-hydrocarbons
CODEN
ANCHAM
CAS No.
67-63-0; 60-29-7; 107-05-1; 100-42-5; 100-41-4; 75-69-4; 108-88-3; 71-55-6; 123-91-1; 67-64-1; 107-06-2; 75-01-4; 71-43-2; 75-09-2; 75-35-4; 79-01-6; 78-93-3; 110-54-3; 108-10-1; 127-18-4; 287-92-3; 141-78-6; 79-00-5; 56-23-5; 108-90-7; 95-49-8
Publication Date
19890401
Document Type
Journal Article
Fiscal Year
1989
NTIS Accession No.
NTIS Price
Issue of Publication
7
Source Name
Analytical Chemistry
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