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Gas Chromatographic Method for Analyzing Gases Associated With Coal.

Authors
Kim-AG; Douglas-LJ
Source
NTIS: PB 234 072 :9 pages
Link
NIOSHTIC No.
10000605
Abstract
Gas samples containing o2, n2, h2, he, co2, CO, ch4, and trace amounts of c2 to c5 hydrocarbons are analyzed by a gas chromatographic method that utilizes both thermal conductivity and flame ionization detectors. A porous polymer support and molecular sieve columns are used with argon as the carrier gas. A column selector valve makes it possible to perform a complete analysis either on one 1-ml sample in 40 minutes or on two samples in 20 minutes, one sample for each detector. Samples are introduced either by on-column injection or through a gas sampling valve. By varying operational parameters, the speed, sensitivity, and accuracy of analysis may be modified to suit a particular situation.
Publication Date
19740101
Document Type
IH; Report of Investigations
Fiscal Year
1974
NTIS Accession No.
PB-234072
NTIS Price
A02
Identifying No.
RI 7903
NIOSH Division
PRC;
Source Name
NTIS: PB 234 072
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