Article (Scientific journals)
Validation of a novel and rapid method for simultaneous determination of some phenolic organohalogens in serum by GC-MS
Dufour, Patrice; PIRARD, Catherine; Charlier, Corinne
2016In Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences, 1036, p. 66-75
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Keywords :
phenolic organohalogens; serum; GC-ENCI-MS; Trimethylsilyldiazomethane
Abstract :
[en] Over the last decades, more and more studies focused on the impact of endocrine disruptors on the environment and human health. Among them, phenolic organohalogens (POHs) are a particular concern because of their structural resemblance with natural hormones. There are different methods that are known to quantify these compounds in human serum, however, the current extraction techniques are long, fastidious and using harmfull chemicals such as diazomethane and sulfuric acid. Consequently, we developed an alternative, sensitive and faster method to simultaneously quantify pentachlorophenol (PCP), tetrabromobisphenol A (TBBPA), 4 bromophenols, 7 hydroxypolychlorinated biphenyls (OH-PCBs) and 3 hydroxy-polybrominated diphenyl ether (OH-PBDEs) in human serum sample. The clean-up and the enrichment of the sample were performed in a single extraction step using strong anion-exchange solid phase cartridge. After a rapid liquid–liquid extraction step to remove acidic traces, the extract was derivatized using trimethylsilyldiazomethane (TMSD) and finally analyzed by a gas-chromatograph coupled with an electron negative capture chemical ionization source combined with a triple quadrupole mass spectrometer (GC-ENCI-MS) operating in single ion monitoring. The whole procedure was validated according to the total error approach. The inter and intra assay precision were demonstrated to be lower than 20% and the relative bias to be lower than 15% in the dosing range of concentrations. The limit of quantification (LOQ) ranged from 2 pg mL−1 and 5 pg mL−1, except for the PCP (44.6 pg mL−1) and for the 2,4,6-tribromophenol (49.6 pg mL−1). Finally, the method was successfully applied to measure the POH background contamination in serum samples collected from 20 Belgian blood donors recruited in CHU Mont-Godinne (Namur, Belgium) aged between 21 and 69 years old.
Disciplines :
Pharmacy, pharmacology & toxicology
Author, co-author :
Dufour, Patrice ;  Université de Liège > Département de pharmacie > Chimie toxicologique
PIRARD, Catherine  ;  Centre Hospitalier Universitaire de Liège - CHU > Service de toxicologie
Charlier, Corinne  ;  Université de Liège > Département de pharmacie > Chimie toxicologique
Language :
English
Title :
Validation of a novel and rapid method for simultaneous determination of some phenolic organohalogens in serum by GC-MS
Publication date :
2016
Journal title :
Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
ISSN :
1570-0232
eISSN :
1873-376X
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
1036
Pages :
66-75
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 18 January 2017

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