Effect of aircraft fuel tank maintenance on salivary cortisol secretion

Norain Ab Latif1; Siti Nor Zawiah Mamat1; Abd Hafiz Qayyum Abd Talib1; Jannathul Firdous1; Ahmad Zahir Mokhtar2; Noorzaid Muhamad1; 3

doi:10.5455/njppp.2017.7.0515821062017

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Online Published: 04 Jul 2017

Natl J Physiol Pharm Pharmacol. 2017; 7(9): 886-890

doi: 10.5455/njppp.2017.7.0515821062017

Effect of aircraft fuel tank maintenance on salivary cortisol secretion

Norain Ab Latif1, Siti Nor Zawiah Mamat1, Abd Hafiz Qayyum Abd Talib1, Jannathul Firdous1, Ahmad Zahir Mokhtar2, Noorzaid Muhamad1, 3.

Abstract
Background: Chemical exposure of human by inhalation or skin exposure to confined space is two stressful events that may cause trauma. In case of aircraft maintenance, workers have to withstand the confined space with poorly-ventilated environment, where they are exposed to toxic hazardous vapor coming from the jet fuel which mainly is kerosene based (>98%). The use of salivary cortisol is very well established stress biomarker and hence can be used as a tool to measure stress level.

Aims and Objectives: This study sought to find out the effect of exposure to aircraft fuel tank during maintenance work on the salivary cortisol secretion.

Materials and Methods: A total of 95 healthy volunteers (67 males, 28 females) aged between 17 and 25 years old took part in this study. Saliva samples were collected before and after fuel tank entry for 15 min. Cortisol concentration was determined by enzyme-linked immune sorbent assay (ELISA) Salivary cortisol kit by Salimetrics.

Results: The cortisol level increased significantly (P=0.001) after exposure to kerosene vapor and confined space. The means of cortisol levels before and after fuel tank entry were 0.28 μg/dL and 0.35 μg/dL, respectively. The hostile characteristic of a confined space is an excellent location to form hazardous concentrations since kerosene contains chemicals with a vapor density greater than air.

Conclusion: This study indicated that exposure to kerosene vapor and confined space will cause a physiological stress and trigger a physiological response in the body of the exposed person.

Key words: Aircraft Fuel Tank, Confined Space, Jet Fuel, Kerosene Vapor, Salivary Cortisol and Stress

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How to Cite this Article

Pubmed Style

Latif NA, Mamat SNZ, Talib AHQA, Firdous J, Mokhtar AZ, Muhamad N. Effect of aircraft fuel tank maintenance on salivary cortisol secretion. Natl J Physiol Pharm Pharmacol. 2017; 7(9): 886-890. doi:10.5455/njppp.2017.7.0515821062017

Web Style

Latif NA, Mamat SNZ, Talib AHQA, Firdous J, Mokhtar AZ, Muhamad N. Effect of aircraft fuel tank maintenance on salivary cortisol secretion. https://www.njppp.com/?mno=266154 [Access: November 01, 2025]. doi:10.5455/njppp.2017.7.0515821062017

AMA (American Medical Association) Style

Latif NA, Mamat SNZ, Talib AHQA, Firdous J, Mokhtar AZ, Muhamad N. Effect of aircraft fuel tank maintenance on salivary cortisol secretion. Natl J Physiol Pharm Pharmacol. 2017; 7(9): 886-890. doi:10.5455/njppp.2017.7.0515821062017

Vancouver/ICMJE Style

Latif NA, Mamat SNZ, Talib AHQA, Firdous J, Mokhtar AZ, Muhamad N. Effect of aircraft fuel tank maintenance on salivary cortisol secretion. Natl J Physiol Pharm Pharmacol. (2017), [cited November 01, 2025]; 7(9): 886-890. doi:10.5455/njppp.2017.7.0515821062017

Harvard Style

Latif, N. A., Mamat, . S. N. Z., Talib, . A. H. Q. A., Firdous, . J., Mokhtar, . A. Z. & Muhamad, . N. (2017) Effect of aircraft fuel tank maintenance on salivary cortisol secretion. Natl J Physiol Pharm Pharmacol, 7 (9), 886-890. doi:10.5455/njppp.2017.7.0515821062017

Turabian Style

Latif, Norain Ab, Siti Nor Zawiah Mamat, Abd Hafiz Qayyum Abd Talib, Jannathul Firdous, Ahmad Zahir Mokhtar, and Noorzaid Muhamad. 2017. Effect of aircraft fuel tank maintenance on salivary cortisol secretion. National Journal of Physiology, Pharmacy and Pharmacology, 7 (9), 886-890. doi:10.5455/njppp.2017.7.0515821062017

Chicago Style

Latif, Norain Ab, Siti Nor Zawiah Mamat, Abd Hafiz Qayyum Abd Talib, Jannathul Firdous, Ahmad Zahir Mokhtar, and Noorzaid Muhamad. "Effect of aircraft fuel tank maintenance on salivary cortisol secretion." National Journal of Physiology, Pharmacy and Pharmacology 7 (2017), 886-890. doi:10.5455/njppp.2017.7.0515821062017

MLA (The Modern Language Association) Style

Latif, Norain Ab, Siti Nor Zawiah Mamat, Abd Hafiz Qayyum Abd Talib, Jannathul Firdous, Ahmad Zahir Mokhtar, and Noorzaid Muhamad. "Effect of aircraft fuel tank maintenance on salivary cortisol secretion." National Journal of Physiology, Pharmacy and Pharmacology 7.9 (2017), 886-890. Print. doi:10.5455/njppp.2017.7.0515821062017

APA (American Psychological Association) Style

Latif, N. A., Mamat, . S. N. Z., Talib, . A. H. Q. A., Firdous, . J., Mokhtar, . A. Z. & Muhamad, . N. (2017) Effect of aircraft fuel tank maintenance on salivary cortisol secretion. National Journal of Physiology, Pharmacy and Pharmacology, 7 (9), 886-890. doi:10.5455/njppp.2017.7.0515821062017

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