The application of gas chromatography-time-of-flight mass spectrometry to the analysis of monomethyl mercury at sub-picogram levels
- Authors
- Kim, Yong-Hyun; Kim, Ki Hyun; Yoon, Hye-On; Brown, Richard J. C.
- Issue Date
- Sep-2013
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Monomethyl mercury (MMHg); Methyl mercury chloride (MMC); Time-of-flight mass spectrometry (TOF-MS)
- Citation
- Microchemical Journal, v.110, pp.107 - 112
- Indexed
- SCIE
SCOPUS
- Journal Title
- Microchemical Journal
- Volume
- 110
- Start Page
- 107
- End Page
- 112
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/26643
- DOI
- 10.1016/j.microc.2013.03.002
- ISSN
- 0026-265X
- Abstract
- The analysis of sub-picogram-range methyl mercury generally requires complicated hyphenated instrumentation combining chromatographic systems for the separation and identification of organic Hg components (by GC-MS or LC-MS) and inorganic mass spectrometric techniques for their quantification. To eliminate the complexities and possible biases associated with such complicated hyphenated systems, it is highly desirable to develop a simplified but reliable single-stage instrumental method for the analysis of methyl mercury in environmental samples. To this end, this paper presents an analytical technique based on thermal desorption (TD) - GC - time of flight (TOF) mass spectrometry (MS) for the quantitative analysis of monomethyl mercury (MMHg) prepared in a liquid phase standard. This optimized system was calibrated using standards in the range of 18 pg to 45 ng and yielded a coefficient of correlation of R-2 = 0.9996. This GC-TOF-MS system allowed very low detection limits for MMHg (MDL = 1.86 pg and LOD = 0.031 pg) with good reproducibility (RSE = 1.82%). The potential applicability of the GC-TOF-MS system is highlighted for the trace-level analysis of sub-pg-range of methyl mercury. (C) 2013 Elsevier B.V. All rights reserved.
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Collections - 서울 공과대학 > 서울 건설환경공학과 > 1. Journal Articles
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