title: High-throughput analysis of human serum for selected polychlorinated biphenyls (PCBs) by gas chromatography-isotope dilution time-of-flight mass spectrometry (GC-IDTOFMS).
abstract: A method for the high-throughput analysis of human serum for the 38 most prevalent polychlorinated biphenyls (PCBs) based on the use of fast gas chromatography-isotopic dilution time-of-flight mass spectrometry (GC-IDTOFMS) is presented. The chromatographic separation time was 8 min. The separation of the congeners was carried out either chromatographically or analytically using the mass spectral deconvolution capability of the TOFMS. The instrument and the method limits of detection (LODs) were 0.5 pg microL(-1) and 20 pg microL(-1), respectively, which is not as good as the one achieved using high resolution mass spectrometry (HRMS) but allows the detection and quantification of the prevalent PCBs present in real human serum samples. The dynamic range covered 3 orders of magnitude. The comparison with the high resolution mass spectrometry (HRMS) reference method (28 min) was good and some separation improvements have been observed. This method allows the analysis of 100 samples per day per instrument.
authors.affiliation: Centers for Disease Control and Prevention, National Center for Environmental Health, Division of Laboratory Sciences, Atlanta, Georgia 30341, USA.
authors.forename: Jean-Francois
authors.initials: JF
authors.lastname: Focant
authors.forename: Jack W
authors.initials: JW
authors.lastname: Cochran
authors.forename: Jean-Marie D
authors.initials: JM
authors.lastname: Dimandja
authors.forename: Edwin
authors.initials: E
authors.lastname: DePauw
authors.forename: Andreas
authors.initials: A
authors.lastname: Sjodin
authors.forename: Wayman E
authors.initials: WE
authors.lastname: Turner
authors.forename: Donald G
authors.initials: DG
authors.lastname: Patterson
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D004785:Environmental Pollutants / Q000097:blood*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D011078:Polychlorinated Biphenyls / Q000097:blood*
chemical_list: D004785:Environmental Pollutants; D011078:Polychlorinated Biphenyls