Experimental
GC/MS
All separations usingAgilent 6890GC coupled to aMicromassUltimaHRMS@10,000RP;
Injectionport:
280°C;
Carrier gas:
He orH
2
Columns
20M:
0.10mm ID, 0.10
µ
mRtx
®
-5MS (RestekCorp.);
Columnheadpressure:
100psi;
Ovenprogram:
100°C (hold 1min.) to
200°C@ 100°C/min. to 235°C@ 13°C/min. to 300°C@ 27°C/min. (hold 4min.);
Injection volume:
0.2
µ
L.
40M:
0.18mm ID, 0.18
µ
mRtx
®
-5MS (RestekCorp.);
Columnheadpressure:
61psi.;
Ovenprogram:
100°C (hold 0.62
min.) to 200°C@ 64.5°C/min. to 235°C@ 4.8°C/min. (hold 6.2min.) to 300°C@ 9.7°C/min (hold 5.6min);
Injection vol-
ume:
1.0
µ
L.
Extract Preparation
Extracts are prepared similar to theUSEPAMethod 8290, but the extracts are further cleaned using carbon SPE. Thismethod
allows for the collection of two sample extract fractions: one containing the non-coplanar PCBs, and the other containing the
coplanar PCBs, dioxins, furans, and PAHs.
