TY - JOUR
T1 - Separation of non-ortho polychlorinated biphenyl congeners on pre-packed carbon tubes. Application to analysis in sewage sludge and soil samples
AU - Molina, L.
AU - Cabes, M.
AU - Díaz-Ferrero, J.
AU - Coll, M.
AU - Martí, R.
AU - Broto-Puig, F.
AU - Comellas, L.
AU - Rodríguez-Larena, M. C.
N1 - Funding Information:
The authors are indebted to M. Abellà (Waste Water Treatment Plant in Vila-Seca, Tarragona, Spain) and G. Poch (Waste Water Treatment Plant in Girona, Spain) for the sewage sludge samples, to Dr. M.J. González (CSIC, Madrid, Spain) for the soil samples and to Dr. Eric Reiner (MOEE, Ont., Canada) for the sediment sample. J.D.F. also gratefully acknowledges the support of the CIRIT, Generalitat de Catalunya.
PY - 2000/5
Y1 - 2000/5
N2 - The analysis of planar (non-ortho) polychlorinated biphenyls (PCB) by HRGC-ECD or HRGC-HRMS requires a fractionation step to avoid the interferences of the bulk of PCB, usually in much higher concentration than the planar ones. In this paper, a new method, based on the fractionation of PCB on SPE commercial tubes pre-packed with Carbopack B, has been developed. After the extract has been applied on the stationary phase, the bulk of PCD are eluted with 15 ml of hexane (fraction I), mono-ortho PCB with 20 ml of hexane/toluene 99:1 (fraction II) and planar PCB with 20 ml of toluene (fraction III) in a station under vacuum. The method has been validated: accuracy (expressed as recovery in %) is >70% and precision (expressed as % RSD) is <20% considering changes of day, analyst and batch of tubes. The method is linear in the range studied. Other advantages are that the method is simple, rapid and it can be easily automated. The application of this separation to the determination of planar PCB in fly-ash extracts from an intercalibration exercise and to sewage sludge, sediment and soil samples has been successful. In addition, this method removes hydrocarbons from the planar PCB fraction and allows its concentration to very small volumes. (C) 2000 Elsevier Science Ltd.
AB - The analysis of planar (non-ortho) polychlorinated biphenyls (PCB) by HRGC-ECD or HRGC-HRMS requires a fractionation step to avoid the interferences of the bulk of PCB, usually in much higher concentration than the planar ones. In this paper, a new method, based on the fractionation of PCB on SPE commercial tubes pre-packed with Carbopack B, has been developed. After the extract has been applied on the stationary phase, the bulk of PCD are eluted with 15 ml of hexane (fraction I), mono-ortho PCB with 20 ml of hexane/toluene 99:1 (fraction II) and planar PCB with 20 ml of toluene (fraction III) in a station under vacuum. The method has been validated: accuracy (expressed as recovery in %) is >70% and precision (expressed as % RSD) is <20% considering changes of day, analyst and batch of tubes. The method is linear in the range studied. Other advantages are that the method is simple, rapid and it can be easily automated. The application of this separation to the determination of planar PCB in fly-ash extracts from an intercalibration exercise and to sewage sludge, sediment and soil samples has been successful. In addition, this method removes hydrocarbons from the planar PCB fraction and allows its concentration to very small volumes. (C) 2000 Elsevier Science Ltd.
KW - Carbon
KW - Fractionation
KW - Intercalibration
KW - Planar polychlorinated biphenyls
KW - Sediment
KW - Sewage sludge
KW - Soil
UR - http://www.scopus.com/inward/record.url?scp=0034002402&partnerID=8YFLogxK
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=pure_univeritat_ramon_llull&SrcAuth=WosAPI&KeyUT=WOS:000085565500002&DestLinkType=FullRecord&DestApp=WOS_CPL
U2 - 10.1016/S0045-6535(99)00334-3
DO - 10.1016/S0045-6535(99)00334-3
M3 - Article
C2 - 10739027
AN - SCOPUS:0034002402
SN - 0045-6535
VL - 40
SP - 921
EP - 927
JO - Chemosphere
JF - Chemosphere
IS - 9-11
ER -
