PMID- 27815608 OWN - NLM STAT- MEDLINE DCOM- 20180221 LR - 20221207 IS - 1618-2650 (Electronic) IS - 1618-2642 (Linking) VI - 409 IP - 1 DP - 2017 Jan TI - In-syringe dispersive mu-SPE of estrogens using magnetic carbon microparticles obtained from zeolitic imidazolate frameworks. PG - 225-234 LID - 10.1007/s00216-016-9988-8 [doi] AB - Herein, we propose for the first time the use of magnetic porous carbons (MPCs) derived from zeolitic imidazolate frameworks (ZIFs) for the automated in-syringe magnetic dispersive micro-solid phase extraction (D-mu-SPE) of environmental pollutants prior to their analysis using GC-MS. MPCs with dual porosity are obtained from the direct combustion of the ZIF-67, obtaining robust and magnetic porous carbons on the micrometer scale. As proof of concept, this material has been applied for the automated D-mu-SPE of estrogens (estrone, 17beta-estradiol, and 17alpha-ethynylestradiol) cataloged as Contaminants of Emergent Concern by the Environmental Protection Agency of the United States (US-EPA). The automation of the system provided a good precision given the low relative standard deviations (RSDs) obtained, ranging from 2.70 to 5.90 % for intra-day precision and from 4.6 to 9.55 % for inter-day precision. Furthermore, the clean-up and preconcentration of the sample is easy and quick, as the in-syringe magnetic D-mu-SPE is carried out in less than 20 min. The high porosity, magnetism, and good stability of the MPCs facilitated the automation of the SPE in dispersive mode enabling the analysis of samples with a complex matrix without backpressure or problems related with the clogging of the instrumentation conduits. The applicability of the method to wastewater samples has been demonstrated given the good recoveries attained ranging from 86 to 115 %. Graphical abstract In-syringe dispersive mu-SPE of estrogens using magnetic carbon microparticles prior GC-MS. FAU - Gonzalez, Alba AU - Gonzalez A AD - Group of Analytical Chemistry, Automation and Environment, Department of Chemistry, University of the Balearic Islands, Carretera de Valldemossa km 7,5, 07122, Palma de Mallorca, Spain. FAU - Avivar, Jessica AU - Avivar J AD - Sciware Systems, S.L. Spin-off of the University of the Balearic Islands, 07193, Bunyola, Spain. FAU - Maya, Fernando AU - Maya F AD - Group of Analytical Chemistry, Automation and Environment, Department of Chemistry, University of the Balearic Islands, Carretera de Valldemossa km 7,5, 07122, Palma de Mallorca, Spain. FAU - Palomino Cabello, Carlos AU - Palomino Cabello C AD - Group of Analytical Chemistry, Automation and Environment, Department of Chemistry, University of the Balearic Islands, Carretera de Valldemossa km 7,5, 07122, Palma de Mallorca, Spain. FAU - Turnes Palomino, Gemma AU - Turnes Palomino G AD - Group of Analytical Chemistry, Automation and Environment, Department of Chemistry, University of the Balearic Islands, Carretera de Valldemossa km 7,5, 07122, Palma de Mallorca, Spain. FAU - Cerda, Victor AU - Cerda V AD - Group of Analytical Chemistry, Automation and Environment, Department of Chemistry, University of the Balearic Islands, Carretera de Valldemossa km 7,5, 07122, Palma de Mallorca, Spain. victor.cerda@uib.es. AD - Sciware Systems, S.L. Spin-off of the University of the Balearic Islands, 07193, Bunyola, Spain. victor.cerda@uib.es. LA - eng PT - Evaluation Study PT - Journal Article DEP - 20161104 PL - Germany TA - Anal Bioanal Chem JT - Analytical and bioanalytical chemistry JID - 101134327 RN - 0 (Environmental Pollutants) RN - 0 (Estrogens) RN - 0 (Waste Water) RN - 0 (Water Pollutants, Chemical) RN - 1318-02-1 (Zeolites) RN - 7440-44-0 (Carbon) SB - IM MH - Carbon/*chemistry MH - Environmental Pollutants/analysis/*isolation & purification MH - Equipment Design MH - Estrogens/analysis/*isolation & purification MH - Gas Chromatography-Mass Spectrometry/methods MH - Limit of Detection MH - Magnets/*chemistry MH - Porosity MH - Solid Phase Microextraction/*instrumentation/methods MH - Syringes MH - Wastewater/analysis MH - Water Pollutants, Chemical/analysis/*isolation & purification MH - Zeolites/*chemistry OTO - NOTNLM OT - Automation OT - Dispersive microsolid phase extraction OT - Estrogens OT - Gas chromatography-mass spectrometry OT - Magnetic porous carbons OT - Zeolitic imidazolate frameworks EDAT- 2016/11/07 06:00 MHDA- 2018/02/22 06:00 CRDT- 2016/11/06 06:00 PHST- 2016/07/22 00:00 [received] PHST- 2016/09/27 00:00 [accepted] PHST- 2016/09/16 00:00 [revised] PHST- 2016/11/07 06:00 [pubmed] PHST- 2018/02/22 06:00 [medline] PHST- 2016/11/06 06:00 [entrez] AID - 10.1007/s00216-016-9988-8 [pii] AID - 10.1007/s00216-016-9988-8 [doi] PST - ppublish SO - Anal Bioanal Chem. 2017 Jan;409(1):225-234. doi: 10.1007/s00216-016-9988-8. Epub 2016 Nov 4.