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Development of a combined solid-phase extraction-supercritical fluid extraction procedure for the determination of polychlorinated biphenyls in wastewater

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Author

  • Saioa Zorita
  • Rikard Westbom
  • Lars Thörneby
  • Erland Björklund
  • Lennart Mathiasson

Summary, in English

A combined solid-phase extraction (SPE)-supercritical fluid extraction (SFE) procedure was developed for the analysis of polychlorinated biphenyls (PCBs) in wastewater. The importance of cleaning and drying the filters and SPE-disks prior to eluting PCBs with SFE was studied, leading to improved recoveries for all congeners investigated. The average PCB recovery of the final procedure, at a concentration of 18 ng/L in reagent water, was 101% with relative standard deviations ranging from 1 to 5% for the different congeners. Spiked leachate to a final concentration of 4 ng/L was extracted directly after spiking, or after 24 h of spiking. An average recovery of 112% was obtained in the direct extraction of spiked leachate.

Publishing year

2006

Language

English

Pages

1455-1459

Publication/Series

Analytical Sciences

Volume

22

Issue

11

Document type

Journal article

Publisher

Japan Society for Analytical Chemistry

Topic

  • Analytical Chemistry

Status

Published

ISBN/ISSN/Other

  • ISSN: 0910-6340