Accession Number:

ADA114575

Title:

An Improved Light Hydrocarbon Analysis System.

Descriptive Note:

Interim rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• Lamontagne,R. A.

Report Date:

1982-05-11

Pagination or Media Count:

10.0

Abstract:

A system for extracting and measuring ambient levels of C1-C4 hydrocarbons and carbon monoxide CO in seawater is described. The analytical instrument is a gas chromatograph with flame ionization detectors that incorporates a catalytic conversion of CO to CH4 methane. The samples are concentrated prior to introduction to the chromatographic system. The volatile hydrocarbons are extracted from the seawater by the use of a helium flow stream and concentrated on dry ice-acetone cold traps. Air samples can be processed in a similar way. Author

Descriptors:

• *Gas chromatography
• *Hydrocarbons
• *Analytical chemistry
• *Sampling
• *Sea water
• Flames
• Ionization
• Detectors
• Catalytic cracking
• Conversion
• Flow
• Helium
• Volatility
• Ethanes
• Air
• Methane

Subject Categories:

• Organic Chemistry
• Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE