[abstract] MONITORING OF HYDROCARBONS IN HYPERBARIC DIVING SYSTEMS BY USING TENAX ADSORBENT.

Rubicon Research Repository/Manakin Repository

[abstract] MONITORING OF HYDROCARBONS IN HYPERBARIC DIVING SYSTEMS BY USING TENAX ADSORBENT.

Show full item record


Title: [abstract] MONITORING OF HYDROCARBONS IN HYPERBARIC DIVING SYSTEMS BY USING TENAX ADSORBENT.
Author: Hag, R; Jakobsen, K
Abstract: In a hyperbaric diving system small amounts of hydrocarbon contaminants are present. The concentrations of the hydrocarbons can be at significant levels if the divers are continuously exposed to the contaminants, like in a living compartment. The origin of such contaminants are the materials inside the diving system including food and anything else brought in, the operations undertaken inside and the human body. We have tested a gas sampling method, which can be used in operational diving for monitoring the hydrocarbon concentration in a hyperbaric diving system. In this sampling technique, large gas volumes can be passed through the adsorbent medium, and the contaminants will be adsorbed and concentrated on the Tenax. After sampling, the contaminants are thermally desorbed from the Tenax, and injected to a gas chromatograph/mass spectrometer and analysed. By passing the hyperbaric chamber gas through the adsorbent for several hours, even contaminants at low concentration, which are not detectable by traditional sampling methods, can be monitored. This method has been used during a 210 msw experimental dive at NUTEC and during a 300 msw operational sea dive in Norway. In both dives we detected small amounts of hydrocarbons, i.e. xylenes and toluene. The concentration of these solvents was at a significant level for divers continuously exposed at such high pressures. By using a traditional sampling / monitoring method, these contaminants could not have been detected.
Description: Abstract of the Undersea and Hyperbaric Medical Society, Inc. Joint Annual Scientific Meeting with the International Congress for Hyperbaric Medicine and the European Undersea Biomedical Society held 11-18 August 1990. Okura Hotel, Amsterdam, The Netherlands (http://www.uhms.org)
URI: http://archive.rubicon-foundation.org/7176
Date: 1990

Files in this item

Files Size Format View
abstract.txt 193bytes Text file View/Open

This item appears in the following Collection(s)

  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

Show full item record

Browse

My Account