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| Titel |
Evaluate the Application of TPH test kits to Identify the Potential Contaminants in Gas Stations |
| VerfasserIn |
P. Y. Liao, C. W. Liu, W. Y. Liu |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250064690
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| Zusammenfassung |
| This study is focusing on the utility and applicability of the portable equipments
such as, photo ionization detector (PID) and flame ionization detector (FID) for
the determination of contaminants during the investigation of various gas stations.
According to the onsite screening results, high contaminated soil samples were sent
to analytical laboratory for the detection and quantification of the contaminants
present therein. However, due to limitations, PID and FID cannot detect the low
vapor pressure components. Hence, they cannot reflect the real situation of the
contaminated soil samples and areas. This study summarizes the analytical results of
total 37 soil samples, collecting from 17 gas stations. Soil samples were not only
analyzed according to the standard method of Taiwan EPA in the laboratory, but
also tested using the Total Petroleum Hydrocarbon (TPH) test kits, following the
USEPA method 9074, to evaluate the TPH concentration in soil samples. With test
kits, onsite, first the TPH was extracted from the soil samples using methanol and
then mixed with emulsifier to produce turbidity, and finally then measured using
the turbidity meter. The TPH test kits method is simple and rapid, and not time
consuming like the laboratory method. A positive relationship has been observed
(co-efficient of determination, R2 = 0.74) comparing between the results obtained from
the laboratory test and kits test methods, especially for the high carbon content
oil such as, diesel, but it does not show the obvious relationship with gasoline.
Number of advantages has been considered in using the TPH test kits including, easily
portable, simple and rapid testing, cost-effective, and onsite quantification. The
technique can be applied for high carbon content oil contamination sites during soil
sampling, to realize the actual situations and the promoting confirmation efficiency. |
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