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Chromatographia

, Volume 50, Issue 7–8, pp 446–452 | Cite as

Sequential solid-phase extraction with cyanopropyl bonded-phase cartridges for trace enrichment of PCBs and chlorinated pesticides from water samples

  • M. V. Russo
  • G. Goretti
  • T. Nevigato
Originals

Summary

Gas chromatography of polychlorinated biphenyls and chlorinated pesticides in water samples has been performed after adsorption from a 50–250 mL sample on to a cartridge containing 100 mg cyanopropyl-bonded porous silica. The PCBs are desorbed with 500 μL ethyl acetate, which is concentrated and analysed by gas chromatography with electron-capture detection (GC-ECD).

The average recovery of 1 ppb PCB congeners at from distilled water and from Marta river water is ≥95% (standard deviation ≤2.5). The average recovery of 20 ppb Aroclor 1260 from Marta river water was ≥91% (standard deviation ≤3.5).

In the separation of the PCBs from the chlorinated pesticides only aldrin, heptachlor and 4,4′-DDD are adsorbed with the PCBs by the CN Sep-Pak cartridge. The method proposed is rapid, simple and reproducible.

Key Words

Gas chromatography Solid-phase extraction (SPE) Polychlorobiphenyls Chlorinated pesticides Organochlorine separation 

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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1999

Authors and Affiliations

  • M. V. Russo
    • 1
  • G. Goretti
    • 2
  • T. Nevigato
    • 2
  1. 1.Facoltà di Agraria (DiSTAAM)Università del MoliseCampobasso (CB)Italy
  2. 2.Dipartimento di ChimicaUniversità “La Sapienza” RomaRomaItaly

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