PMID- 36178049 OWN - NLM STAT- MEDLINE DCOM- 20221024 LR - 20221129 IS - 1759-9679 (Electronic) IS - 1759-9660 (Linking) VI - 14 IP - 40 DP - 2022 Oct 20 TI - Simultaneous and sensitive determination of the main metabolites of the plasticizer DEHP and its substitutes DEHTP, DINCH and TEHTM in human urine by coupling of on-line SPE, UHPLC and tandem mass spectrometry. PG - 3970-3981 LID - 10.1039/d2ay01293f [doi] AB - With the prominent but toxicologically critical plasticizer di-(2-ethylhexyl) phthalate (DEHP) declining, alternative plasticizers are increasingly used leading to a continuously more diverse exposure situation of humans with multiple plasticizers. Therefore, an on-line SPE-LC-MS/MS method for the simultaneous determination of the most relevant urinary biomarkers of exposure to DEHP and the alternative plasticizers 1,2-cyclohexane dicarboxylic acid diisononyl ester (DINCH), di-(2-ethylhexyl) terephthalate (DEHTP) and tri-(2-ethylhexyl) trimellitate (TEHTM) was developed. The method is characterized by a high sensitivity with limits of detection ranging from 0.006 to 0.047 mug L(-1) combined with an easy and straightforward sample preparation procedure. The wide linear working range of the method enables a reliable determination of analyte background levels in the general population as well as its potential use for monitoring studies investigating elevated plasticizer exposure settings. The method was successfully applied to urine samples from ten volunteers without occupational exposure to plasticizers revealing ubiquitous background exposure levels of the common plasticizers DEHP, DEHTP and DINCH. FAU - Kuhlmann, Laura AU - Kuhlmann L AUID- ORCID: 0000-0002-5037-4399 AD - Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universitat Erlangen-Nuremberg, Henkestr. 9-11, 91054 Erlangen, Germany. Elisabeth.Eckert@fau.de. FAU - Munch, Frank AU - Munch F AUID- ORCID: 0000-0002-2790-0418 AD - Department of Pediatric Cardiac Surgery, University Hospital Erlangen, University of Erlangen-Nuremberg, Germany. FAU - Goen, Thomas AU - Goen T AUID- ORCID: 0000-0002-8226-9227 AD - Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universitat Erlangen-Nuremberg, Henkestr. 9-11, 91054 Erlangen, Germany. Elisabeth.Eckert@fau.de. FAU - Eckert, Elisabeth AU - Eckert E AUID- ORCID: 0000-0002-6037-9556 AD - Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universitat Erlangen-Nuremberg, Henkestr. 9-11, 91054 Erlangen, Germany. Elisabeth.Eckert@fau.de. LA - eng PT - Journal Article DEP - 20221020 PL - England TA - Anal Methods JT - Analytical methods : advancing methods and applications JID - 101519733 RN - 0 (Plasticizers) RN - C42K0PH13C (Diethylhexyl Phthalate) RN - 0 (Biomarkers) RN - 0 (Esters) RN - 0 (Cyclohexanes) SB - IM MH - Humans MH - *Plasticizers/analysis/metabolism MH - Tandem Mass Spectrometry/methods MH - Chromatography, Liquid/methods MH - *Diethylhexyl Phthalate/urine MH - Chromatography, High Pressure Liquid MH - Biomarkers MH - Esters MH - Cyclohexanes EDAT- 2022/10/01 06:00 MHDA- 2022/10/25 06:00 CRDT- 2022/09/30 06:32 PHST- 2022/10/01 06:00 [pubmed] PHST- 2022/10/25 06:00 [medline] PHST- 2022/09/30 06:32 [entrez] AID - 10.1039/d2ay01293f [doi] PST - epublish SO - Anal Methods. 2022 Oct 20;14(40):3970-3981. doi: 10.1039/d2ay01293f.