Main Title |
Laboratory evaluation of tunable atomic line molecular spectrometers for benzene analysis {MICROFICHE} |
Author |
Scott, D. R. ;
Hedgecoke, R. L.
|
Other Authors |
|
CORP Author |
Environmental Monitoring Systems Lab., Research Triangle Park, NC. |
Publisher |
U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory ; |
Year Published |
1984 |
Report Number |
EPA-600/4-84-030 |
Stock Number |
PB84-177765 |
Subjects |
Benzene--Spectra ;
Spectrum analysis
|
Additional Subjects |
Laboratory equipment ;
Gas detectors ;
Air pollution ;
Gas analysis ;
Chemical analysis ;
Sampling ;
Performance evaluation ;
Design criteria ;
Calibrating ;
Feasibility ;
Benzenes ;
Benzene ;
Tunable atomic line molecular spectroscopy ;
Air pollution detection ;
Toxic substances ;
Procedures
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB84-177765 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
43 p. ; 28 cm. |
Abstract |
Tunable Atomic Line Molecular Spectroscopy (TALMS) is a high resolution, differential absorption technique used in the ultraviolet region. Under Interagency Agreements EPA-80-D-X1014 and AD-89-F-2A008 with Lawrence Berkeley Laboratory, two prototype TALMS instruments were designed, constructed, and delivered to the U.S. EPA at Research Triangle Park, North Carolina. TALMS I was a large laboratory instrument designed to demonstrate the feasibility of TALMS detection of toxic organic compounds. TALMS II was a more compact monitor for benzene designed for possible field applications. Both instruments were evaluated in the laboratory for performance characteristics in the analysis of benzene using the 253.7 nm mercury line. The tests included detection limit, precision, effect of temperature (TALMS I), effect of pressure (TALMS II), and interferences from organic compounds other than benzene. The prototype instruments evaluated can detect benzene precisely above the detection limit of 6 microgram. The apparent interferences from toluene and pyridine are relatively small and may be artifacts which can be eliminated with improvements in electronic signal processing. It was recommended that changes to the sample cell and electronics be made to improve the detection limit and that extension of the capabilities of TALMS to other organic compounds be made. |
Notes |
Caption title. Distributed to depository libraries in microfiche. "April 1984." "EPA-600/4-84-030." Microfiche. |
Place Published |
Research Triangle Park, NC : |
Corporate Au Added Ent |
Environmental Monitoring Systems Laboratory (Research Triangle Park, N.C.) |
PUB Date Free Form |
1984. |
NTIS Prices |
PC A03/MF A01 |
BIB Level |
m |
Cataloging Source |
OCLC/T |
OCLC Time Stamp |
20011023174535 |
Language |
eng |
Origin |
NTIS |
Type |
MERGE |
OCLC Rec Leader |
01251nam 2200289Ka 45020 |