- P-ISSN 1225-0163
- E-ISSN 2288-8985
- P-ISSN1225-0163
- E-ISSN2288-8985
- SCOPUS, ESCI, KCI
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Changes in the gas chromatographic sensitivity with its analytical setting: Comparison of TDU and loop-injection system for the analysis of sulfur compounds
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2005, v.18 no.1, pp.66-73
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(2005). Changes in the gas chromatographic sensitivity with its analytical setting: Comparison of TDU and loop-injection system for the analysis of sulfur compounds. Analytical Science and Technology, 18(1), 66-73.
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Abstract
In this study, we investigated the gas chromatography (GC) and pulsed flame photometric detection (PFPD) system for the analysis of four major reduced S compounds including hydrogen sulfide (H2S); methyl mercaptan (CH3SH); dimethyl sulfide (DMS); and dimethyl disulfide (DMDS) contained in environmental samples. To analyze these compounds in high concentration range (above ppb level), we developed a high mode analytical setting with the loop-injection system. By contrast, we also established a low mode setting for the analysis of low concentration samples (ppt-level samples from ambient air) by the combination with thermal desorption unit (TDU). Comparative analysis of both settings revealed that relative detection properties of four S compounds are systematic enough. The results of high mode analysis indicated that the patterns were systematic among S compounds: H2S exhibited the lowest sensitivity, while DMDS showed the strongest one. The results were also compared in terms of sensitivity reductions for all compounds by dividing slope ratios between low and high mode system. Although low mode system exhibited significant reductions on the order of a few tens times, their detection characteristics were highly consistent as it was shown in the high mode setting. To learn more about absolute and relative relations between two different modes of S analysis, future studies may have to be directed to cover more complicated nature of GC/PFPD performance.
- keywords
- Hydrogen sulfide, detection, malodor, PFPD detection, high mode, Low mode
Reference
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(2004a) 환경대기 중 악취성분 황화합물 (메틸메르캅탄, 황화수소, 황화메틸, 이황화메틸)에 대한 표준작업지침서 1 -고농도 모드를 중심으로. 첨단환경기술,
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(2004b) 환경대기 중 악취성분 황화합물 (메틸메르캅탄, 황화수소, 황화메틸, 이황화메틸)에 대한 표준작업지침서 2 -저농도 모드를 중심으로. 첨단환경기술,
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The performanc charac- teristics of GC/PFPD technique on reduced S compounds in air. Atmospheric Environment.,
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