Analysis of gasoline in water using a stripping preconcentration procedure

The measurement of low levels (10, 100, 500 ppb) of gasoline (petrol) in water using a stripping-thermal desorption procedure is described. A multicomponent collection tube, containing glass beads, Tenax TA, Ambersorb XE-340 and charcoal was used in place of the more common Tenax collection tube. Ga...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 1988-02, Vol.40 (2), p.244-248
Main Authors: BELKIN, F, HABLE, M. A
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
Chromatography, Gas
Exact sciences and technology
Gas chromatographic methods
Gasoline - analysis
Hot Temperature
Methods
Petroleum - analysis
Water Pollutants - analysis
Water Pollutants, Chemical - analysis
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Summary:The measurement of low levels (10, 100, 500 ppb) of gasoline (petrol) in water using a stripping-thermal desorption procedure is described. A multicomponent collection tube, containing glass beads, Tenax TA, Ambersorb XE-340 and charcoal was used in place of the more common Tenax collection tube. Gasoline recovery from spiked samples was 95-104 per cent, with coefficients of variation between 9.4 and 10.6 per cent. In the case of gasoline components (3-methylpentane, n-hexane, benzene, isooctane, n-heptane, toluene, n-octane, 1-chlorohexane, ethylbenzene, p plus m-xylene, o-xylene, n-nonane, n-undecane), each at a concentration of 100 ppb in water, recoveries ranged from 77 to 128 per cent and coefficients of variation from 4.3 to 33 per cent. The procedure used small water samples (15 ml), and was relatively rapid as 3 samples could be sparged simultaneously and thermal desorption-gas chromatography time was less than 30 minutes.
ISSN:0007-4861
1432-0800
DOI:10.1007/BF01881046