|Document ID (ISN)||100595|
|ISSN - Serial title
||1529-8663 - AIHA Journal
|Convention or series no.
||Matney M.L., Beck S.W., Limero T.F., James J.T.
||Multisorbent tubes for collecting volatile organic compounds in spacecraft air
||Jan.-Feb. 2000, Vol.61, No.1, p.69-75. Illus. 18 ref.
||The objective of this study was to improve the capability of Tenax-TA tubes to trap and concentrate volatile contaminants from air aboard spacecraft by incorporating additional sorbents within the tubes. Two carbon molecular sieve-type sorbents were tested. Breakthrough volumes were determined by flowing low levels of methanol or trichlorofluoromethane in nitrogen through the sorbent tubes at 30mL/min. Breakthrough volumes for methanol on the two sorbents were about 9L/g and 11L/g, while those for trichlorofluoromethane were 7L/g and >26L/g. Tubes containing either Tenax-TA alone or in combination with each sorbent were next exposed to a 10-component gas mixture and percentage recoveries of each constituent were determined. The Tenax-TA and Carboxen 569 combination gave the best overall recoveries (75-114% for the 10 compounds). Acetaldehyde had the lowest recovery (75%), but this value was an improvement over either the other sorbent combinations or the original single-sorbent tubes.
||organic compounds; volatile substances; space travel; confined spaces; sorbents
||trichlorofluoromethane; molecular sieve adsorption; methanol; acetaldehyde
||D - Periodical articles
|Country / State or Province||USA|
||Toxic and dangerous substances
|Broad subject area(s)