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KMID : 0383619960170000027
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Bulletin of Environmental Sciences
1996 Volume.17 No. 0 p.27 ~ p.36
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Gas Chromatographic Determination of Volatile Materials in Water
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Kim Young-Cheul
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Abstract
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A new analysis method has been developed that can quantify the six non-halogenized organic volatile pollutants (benzene, toluene, ethylbenzene, o-,m-,p-xylene) which are added to the drinking water requirement lately and styrene at the same time. The concentration efficiency improved when the material which is trapped in the second in the second trapping equipment with the help of pyrofoil have the thermodesorption, a procedure that should be done after the organic volatile pollutants which are contained in water are purged and trapped through a two step trap. And even the infinitesimal that is usually measured and expressed in terms of ng/L is detected thorough an GC-FID using analysis of it.
Each statistical detection limit of benzene, toluene, ethylbenzene, o-,m-,p-xylene, and styrene is 34.32, 70.35, 15.48, 40.98, 73.12, 40.10, and 112.9lng/L. It takes less than 40 minutes to analyze the testing material once.
An investigation using this method shows the pollution level of 1 spot of the Han river and 6 spots of Jungnang ch’on is benzene:10.4∼42.0㎍/L, Toluene: 27.2∼115.2㎍/L, ethylbenzene: 0∼6.4㎍/L, o-xylene: 0∼8.8㎍/L, m-xylene: trace∼8.4㎍/L, p-xylene: trace∼7.6㎍/L, styrene:0∼2.4㎍/L.
Compared with the drinking water requirement all is below the criterion except benzene. The spots were much polluted by benzene which exceeds the criterion high.
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