Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Method development of combining pressurized liquid extraction and off-line HPLC fractionation with a porous graphite carbon column for the analysis of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in environmental samples

Language

English

Abstract

A method was developed for analysis of PCDD/Fs in fly ash and soil samples by using the combination of pressurized liquid extraction (PLE) and off-line HPLC fractionation with a porous graphite carbon (PGC) column, followed by analysis using HRGC/HRMS. The samples were automatically extracted by PLE. A multi-layer silica column was used for the preliminary cleanup. Then off-line fractionation was applied for the separation of PCDD/Fs and the collected PCDD/Fs fraction was analyzed by HRGC/HRMS. The use of solvent back-flushing at 70°C successfully solved the carry-over problem of PGC column. The procedure of single extraction and cleanup provided advantages of high automation and significant reduction of solvent and time compared to conventional methods. The method was validated by certified materials of fly ash and industrial sandy soil, and applied for the analysis of fly ash samples collected from three two-ton medical waste incinerators in Beijing and one farm soil sample collected in the vicinity of the incinerators. © 2013 Copyright Taylor and Francis Group, LLC.

Keywords

HPLC fractionation, HRGC/HRMS, polychlorinated dibenzo-p-dioxins and dibenzofurans, pressurized liquid extraction

Publication Date

2013

Source Publication Title

International Journal Of Environmental Analytical Chemistry

Volume

93

Issue

12

Start Page

1296

End Page

1310

Publisher

Taylor & Francis

DOI

10.1080/03067319.2012.702278

ISSN (print)

03067319

ISSN (electronic)

10290397

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