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Korean Journal of Environmental Toxicology 2002;17(1):63-71.
공기 중 휘발성 유기화합물의 측정을 위한 열탈착-분석시스템의 구성 및 평가
이수형, 송희남, 김희갑
Composition and Evaluation of the Thermal Desorption-Gas Chromatographic System for the Measurement of Volatile Organic Compounds in Air
Soohyung Lee , Heanam Song , Heakap Kim
ABSTRACT
The thermal desorption-gas chromatographic (TD-GC) system has been constructed for the measurement of volatile organic compounds. The thermal desortion unit is composed of four major parts: 1) the control part; 2) the thermal desorption part; 3) the focusing part: and 4) the injection part. The peltier element was introduced to the focusing part for the temperature of the focusing tube to reach - 35℃. The system was tested for the linearity of the calibration curves and reproducibility of instrumental analyses using some disinfection by-products (DBPs) and BTXs (benzene, toluene and p-xylene). The coefficients of determination (r²) for all the calibration curves made were higher than 0.998, and the coefficients of variation (CV) for triplicate measurements were all within 10%. The system also has been tested for field applicability. The analysis of field samples showed that there was no breakthrough problem in the sampling system and that the system could be applied to field measurements.
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