Quantification of polychlorinated dibenzo-p-dioxins and dibenzofurans by direct injection of sample extract into the comprehensive multidimensional gas chromatograph/high-resolution time-of-flight mass spectrometer
| Autor: | Shibata Yasuyuki, Ubukata Masa-aki, Tanabe Kiyoshi, Anezaki Katsunori, Otsuka Hideyuki, Ito Hiroyasu, Tanaka Kazuo, Kusai Akihiko, Takazawa Yoshikatsu, Hashimoto Shunji, Fushimi Akihiro |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Detection limit
Flue gas Chromatography Chemistry Organic Chemistry Analytical chemistry High resolution General Medicine Mass spectrometry Dioxins Biochemistry Coal Ash Carbon Gas Chromatography-Mass Spectrometry Analytical Chemistry Time of flight Polychlorinated Dibenzo-p-dioxins Particulate Matter Gas chromatography Toxic equivalency factor Benzofurans |
| Zdroj: | Journal of chromatography. A. 1178(1-2) |
| ISSN: | 0021-9673 |
| Popis: | Polychlorinated dibenzo-p-dioxins and dibenzofurans in crude extracts of fly ash and flue gas from municipal waste incinerators were quantified using a comprehensive multidimensional gas chromatograph (GC x GC) coupled to a high-resolution time-of-flight mass spectrometer (HR-TOFMS). For identification and quantification, we developed our own program to prepare 3D chromatograms of selected mass numbers from the data of the GC x GC/HR-TOFMS. Isolation of all congeners with a TCDD toxic equivalency factor from the other isomers by only one injection was confirmed. The instrumental detection limit of TCDD on the GC x GC/HR-TOFMS was 0.9 pg by the relative calibration method. Quantification of these substances in the crude extracts was achieved by direct injection to the GC x GC/HR-TOFMS. The results agree with the values obtained using a generic gas chromatography/high-resolution mass spectrometry (GC/HRMS) system. It was confirmed that measurement by high-resolution TOFMS and GC x GC effectively reduces interference from other chemicals. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect