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Document ID (ISN)77051
CIS number 01-1132
ISSN - Serial title 0095-6562 - Aviation, Space, and Environmental Medicine
Year 2000
Convention or series no.
Author(s) Kobayashi A., Kikuwaka A.
Title Increased formaldehyde in jet engine exhaust with changes to JP-8, lower temperature, and lower humidity irritates eyes and respiratory tract
Bibliographic information Apr. 2000, Vol.71, No.4, p.396-399. Illus. 9 ref.
Abstract Formaldehyde (FA) in exhaust from fighter aircraft with low smoke combustor (LSC) J79 engines has been reported to cause irritation, becoming more frequent and severe after the fuel was changed from JP-4 to JP-8. The present study, conducted in Japan, investigated the effect of jet fuel and power setting on formaldehyde concentrations in the exhaust. The exposure to formaldehyde among pilots and flight line personnel is also investigated. The exhaust from LSC J79 engines was sampled 50m behind the engine at different power settings in July and February. At an idle power setting, the FA concentration was higher in the exhaust of engines using JP-8 (1.31ppm in July and 2.78ppm in February) than in engines using JP-4 (0.95ppm in July and 1.84ppm in February). The FA concentration increased as both ambient temperature and relative humidity decreased in the sampling atmosphere. The FA concentration of JP-8 fuel at an idle power setting (65%) was higher than that at a 71.5% power setting (1.32ppm and 0.86ppm, respectively).
Descriptors (primary) formaldehyde; weather; exhaust gases; jet aircraft; irritation
Descriptors (secondary) Japan; aircraft pilots; exposure evaluation; maintenance and repair
Document type D - Periodical articles
Country / State or ProvinceJapan
Subject(s) Toxic and dangerous substances
Broad subject area(s) Chemical safety
Browse category(ies) Natural phenomena
Air transportation