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Journal of the Korean Society for Environmental Analysis 2016;19(4):246-253.
Quantitation of Low Concentration Fluorinated Greenhouse Gases by Cryogenic Trapping-thermal Desorption Method
저온농축 열탈착방식에 의한 저농도 불소계 온실가스의 정량분석
홍길환1, 박진수2
1한국산업기술시험원
2상명대학교
Abstract
Fluorinated greenhouse gases have a significant impact on the environment. We propose a new analytical method for the quantitation of fluorinated gases in low concentration, such as perfluorocarbons, NF3, and SF6, in air samples. This method uses a cryogenic trapping–thermal desorption system, utilizing a gas chromatography/ mass spectrometry (GC/MS) system in combination with a cryogenic trapping system operated at temperatures from −30 to 300°C. The linearity, precision, method detection limits (MDLs), and limits of quantification (LOQs) of this system were verified using the chromatogram peak areas of the fluorinated greenhouse gases in the samples. The MDLs and LOQs for the gases tested were less than 1 nmol/mol and 3.1 nmol/mol, respectively. In addition, the precision of the analysis was less than 2%. Our results indicate that the proposed method is able to quantitatively analyze low concentrations of fluorinated greenhouse gases.
Key Words: Fluorinated greenhouse gases, Cryogenic, Thermal desorption, Quantitation, Gas chromatography, Mass spectrometry
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