PMID- 27614976 OWN - NLM STAT- MEDLINE DCOM- 20180119 LR - 20180119 IS - 1618-2650 (Electronic) IS - 1618-2642 (Linking) VI - 408 IP - 27 DP - 2016 Nov TI - Determination of novel brominated flame retardants and polybrominated diphenyl ethers in serum using gas chromatography-mass spectrometry with two simplified sample preparation procedures. PG - 7835-7844 AB - Two simple and efficient pretreatment procedures have been developed for the simultaneous extraction and cleanup of six novel brominated flame retardants (NBFRs) and eight common polybrominated diphenyl ethers (PBDEs) in human serum. The first sample pretreatment procedure was a quick, easy, cheap, effective, rugged, and safe (QuEChERS)-based approach. An acetone/hexane mixture was employed to isolate the lipid and analytes from the serum with a combination of MgSO(4) and NaCl, followed by a dispersive solid-phase extraction (d-SPE) step using C18 particles as a sorbent. The second sample pretreatment procedure was based on solid-phase extraction. The sample extraction and cleanup were conducted directly on an Oasis HLB SPE column using 5 % aqueous isopropanol, concentrated sulfuric acid, and 10 % aqueous methanol, followed by elution with dichloromethane. The NBFRs and PBDEs were then detected using gas chromatography-negative chemical ionization mass spectrometry (GC-NCI MS). The methods were assessed for repeatability, accuracy, selectivity, limits of detection (LODs), and linearity. The results of spike recovery experiments in fetal bovine serum showed that average recoveries ranged from 77.9 % to 128.8 % with relative standard deviations (RSDs) from 0.73 % to 12.37 % for most of the analytes. The LODs for the analytes in fetal bovine serum ranged from 0.3 to 50.8 pg/mL except for decabromodiphenyl ethane. The proposed method was successfully applied to the determination of the 14 brominated flame retardants in human serum. The two pretreatment procedures described here are simple, accurate, and precise, and are suitable for the routine analysis of human serum. Graphical Abstract Workflow of a QuEChERS-based approach (top) and an SPE-based approach (bottom) for the detection of PBDEs and NBFRs in serum. FAU - Gao, Le AU - Gao L AD - School of Public Health, Capital Medical University, Beijing, 100069, China. AD - Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China. FAU - Li, Jian AU - Li J AD - School of Public Health, Capital Medical University, Beijing, 100069, China. AD - Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China. FAU - Wu, Yandan AU - Wu Y AD - The Hospital of Shunyi District, Beijing, 101300, China. FAU - Yu, Miaohao AU - Yu M AD - The Hospital of Shunyi District, Beijing, 101300, China. FAU - Chen, Tian AU - Chen T AD - School of Public Health, Capital Medical University, Beijing, 100069, China. AD - Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China. FAU - Shi, Zhixiong AU - Shi Z AD - School of Public Health, Capital Medical University, Beijing, 100069, China. szx0127@ccmu.edu.cn. AD - Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China. szx0127@ccmu.edu.cn. FAU - Zhou, Xianqing AU - Zhou X AD - School of Public Health, Capital Medical University, Beijing, 100069, China. AD - Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China. FAU - Sun, Zhiwei AU - Sun Z AD - School of Public Health, Capital Medical University, Beijing, 100069, China. AD - Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, China. LA - eng PT - Journal Article DEP - 20160910 PL - Germany TA - Anal Bioanal Chem JT - Analytical and bioanalytical chemistry JID - 101134327 RN - 0 (Flame Retardants) RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Hexanes) RN - 0 (Sulfuric Acids) RN - 1364PS73AF (Acetone) RN - 588X2YUY0A (Methylene Chloride) RN - ND2M416302 (2-Propanol) RN - O40UQP6WCF (sulfuric acid) RN - Y4S76JWI15 (Methanol) SB - IM MH - 2-Propanol/chemistry MH - Acetone/chemistry MH - Flame Retardants/*analysis MH - Gas Chromatography-Mass Spectrometry/*methods MH - Halogenated Diphenyl Ethers/*blood MH - Hexanes/chemistry MH - Humans MH - Limit of Detection MH - Male MH - Methanol/chemistry MH - Methylene Chloride/chemistry MH - Reproducibility of Results MH - Solid Phase Extraction/*methods MH - Sulfuric Acids/chemistry OTO - NOTNLM OT - Gas chromatography-mass spectrometry OT - Novel brominated flame retardants OT - Polybrominated diphenyl ethers OT - QuEChERS OT - Serum EDAT- 2016/09/12 06:00 MHDA- 2018/01/20 06:00 CRDT- 2016/09/12 06:00 PHST- 2016/04/30 00:00 [received] PHST- 2016/08/16 00:00 [accepted] PHST- 2016/07/28 00:00 [revised] PHST- 2016/09/12 06:00 [pubmed] PHST- 2018/01/20 06:00 [medline] PHST- 2016/09/12 06:00 [entrez] AID - 10.1007/s00216-016-9887-z [pii] AID - 10.1007/s00216-016-9887-z [doi] PST - ppublish SO - Anal Bioanal Chem. 2016 Nov;408(27):7835-7844. doi: 10.1007/s00216-016-9887-z. Epub 2016 Sep 10.