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GC Analysis of PCBs in Soybean Oil After Extraction using EZ-POP NP SPE

GC Analysis of PCBs in Soybean Oil After Extraction using EZ-POP NP SPE

Conditions

sample preparation SPE (Solid Phase Extraction)
sample/matrix Soybean oil
SPE tube/cartridge Supelclean(TM) EZ-POP NP, 12 ML (54341-U)
condition 10 mLacetone
sample addition 0.5 gsoybean oil, weighed directly onto cartridge
drying 10 min
elution 15 mLacetonitrile
eluate post-treatment concentrate to final volume 1 mL, 40 C with nitrogen purge
column SLB-5ms, 20 m x 0.18 mm I.D., 0.18 µm (28564-U)
oven 75C ( 1 min), 12 C/min to 340 C (20 min)
carrier gas hydrogen, 1.2 ml/min constant flow
injection 1 muLsplitless (0.75 mm)
liner 4 mmID FocusLiner(TM) with taper
inj. temp. 250 C
detector mu-ECD, 340 C

Description

Analysis Note Polychlorinated biphenyls (PCBs) were once widely used as insulating fluids, dielectrics, and lubricants. This included their extensive use in electrical transformers. PCB use has been banned in many countries and the Stockholm Convention currently prohibits the production and use of PCBs. Parties to the Convention are required to discontinue use of PCBs in existing equipment, including electrical transformers, by 2025. However, there are many transformers still in service that contain PCBs, and these must be identified. This has resulted in a need to identify and quantify the PCBs present in these transformers so as to ensure that oil waste is handled properly. Although mineral oil is widely used in electrical transformers, vegetable-based oils such as soybean oil are also used. In this application, the use of EZ-POP NP SPE is applied to the extraction of PCBs from soybean oil.
Categories Analytical Chromatography, SPE Applications, GC Applications, Dioxins, PCBs, PBDEs, Dioxins/PCBs/PBDEs
Featured Industry Environmental
Legal Information Supelclean is a trademark of Sigma-Aldrich Co. LLC, FocusLiner is a trademark of SGE Analytical Science Pty Ltd.
suitability application for GC, application for SPE

Materials

     
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