ISSN : 1738-4125(Print)
ISSN : 2287-7509(Online)
ISSN : 2287-7509(Online)
Fast GC의 분석성능평가와 실내환경의 VOC 분석： 시료의 주입방식별 중량특성 비교
Performance Evaluation of Fast Gas Chromatography and Indoor VOC analysis ：Comparison between Different Sample Loading Approaches
Abstract
In this study, the performance of fast gas chromatography system was evaluated using VOC standardsprepared in both liquid and gaseous phase. When the liquid‐phase VOC standards were analyzed by bothdirect injection and HS‐SPME method, all the chromatographic separation was completed within 4 minutes.The calibration experiments were conducted further using gaseous standard of BTX. The calibration resultsderived by direct injection method generally showed good linearities, regardless of phases, while it was notthe case for HS‐SPME method. In case of liquid‐phase standard, MDL values for direct injection and HSSPMEmethod were calculated in the range of 0.07~0.19 to 0.63~3.76 ng, respectively. In contrast, MDLvalues for gaseous standard were 0.27~0.45 and 1.94~6.90, respectively. The reproducibility of our method,when expressed in terms RSE, showed above 5 %. When the sensitivity of different techniques is compared,the calibration slope values of BTX decreased on the order: direct injection of liquid‐phase standard > HSSPMEmethod of liquid‐phase standard > direct injection of gaseous standard > HS‐SPME method of gaseousstandard. Although fast GC is very efficient to reduce the total running time significantly, extended studiesare desirable to improve its reproducibility.
- A9R1800.pdf1.28MB
