Simultaneous Gas-Chromatographic Determination of Toxic Gases in Combustion Atmospheres

Endecott, Boyd R.; Sanders, Donald C.; Chaturvedi, Arvind K.; Civil Aeromedical Institute

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Simultaneous Gas-Chromatographic Determination of Toxic Gases in Combustion Atmospheres

1994-09-01
By Endecott, Boyd R. ; Sanders, Donald C. ; Chaturvedi, Arvind K.

[PDF-451.08 KB]

English

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Creators:

Endecott, Boyd R. ; Sanders, Donald C. ; Chaturvedi, Arvind K.

Endecott, Boyd R. ; Sanders, Donald C. ; Chaturvedi, Arvind K. Less -
Corporate Creators:

Civil Aeromedical Institute
Corporate Contributors:

United States. Office of Aviation Medicine
Subject/TRT Terms:

[+]

Aircraft Cabins Carbon Monoxide Experiments Fire Gas Chromatography Gases, Asphyxiating And Poisonous Hydrocyanic Acid Hydrogen Sulfide Poisonous Gases Smoke Sulfur Dioxide Toxicity Toxicity Testing Woven Fabrics
Publication/ Report Number:

DOT/FAA/AM-94/18
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Civil Aerospace Medical Institute
Abstract:

Measurement of combustion gases produced by burning aircraft cabin materials poses a continuing limitation for smoke toxicity research. Since toxic effects of gases depend on both their concentrations and duration of exposures, frequent atmosphere sampling is necessary to define the concentration time curve.

A gas chromatographic method was developed for the simultaneous analyses of carbon monoxide (CO), hydrogen sulfide (H2S), sulfur dioxide (SO2), and hydrogen cyanide (HCN). The method utilized an MTI M200 dual-column gas chromatograph (GC) equipped with 4-m molecular sieve 5A and 8-m PoraPlot-U capillary columns and two low volume, high-sensitivity thermal conductivity detectors. Detectability (ppm)/retention times (seconds) for the gases were: CO (100/28); H2S (50/26); SO2(125/76); HCN (60/108).

The method was effective for determining these gases in mixtures and in the combustion atmospheres generated by burning wool (CO, HCN, and H2S) and modacrylic (CO and HCN) fabrics. Common atmospheric gaseous or combustion products (oxygen, carbon dioxide, nitrogen, water vapor, and other volatiles) did not interfere with the analyses. However, filtration of the combustion atmospheres was necessary to prevent restriction of the GC sampling inlet by smoke particulates. The speed, sensitivity, and selectivity of this method make it suitable for smoke toxicity research and for evaluating performance of passenger protective breathing equipment.
Format:

PDF
Collection(s):

FAA Civil Aerospace Medical Institute US Transportation Collection
Main Document Checksum:

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urn:sha256:af7792857b3c9486b87ce4e69dc43ddeba4851267edd4505b588d6e8b41f393f
Download URL:

https://rosap.ntl.bts.gov/view/dot/21416/dot_21416_DS1.pdf
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Simultaneous Gas-Chromatographic Determination of Toxic Gases in Combustion Atmospheres

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