PMID- 27749082 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180608 LR - 20180608 IS - 1520-5827 (Electronic) IS - 0743-7463 (Linking) VI - 32 IP - 44 DP - 2016 Nov 8 TI - Metal-Organic Framework-Polymer Composite as a Highly Efficient Sorbent for Sulfonamide Adsorption and Desorption: Effect of Coordinatively Unsaturated Metal Site and Topology. PG - 11465-11473 AB - In this study, we first demonstrated the effect of two types of metal-organic framework-polymer (MOF-polymer) monoliths on in-tube solid-phase microextraction (IT-SPME) of sulfonamides. Sulfonamides were successfully adsorbed onto MIL-101(Cr)-polymer but were difficult to elute due to these sulfonamides could interact via Lewis acid-base interaction with the presence of Cr(III) coordinatively unsaturated metal sites (CUS). Moreover, the cage-type topology of MIL-101(Cr) that could produce multiple pathways thus complicates the desorption of the test analytes from the sorbent. Contrastingly, MIL-53(Al)-polymer provided weaker Al(III) CUS, and its one-dimensional channel pore structure could provide an unhindered pathway for sulfonamides transfer during elution. After optimizing the IT-SPME condition such as MOF content, pH of sample matrix, column length, extraction flow rate, and elution volume, the calculated extraction recovery of sulfonamides in MIL-53(Al)-polymer as analyzed by microemulsion electrokinetic chromatography (MEEKC) were in the range of 40%-90% with relative standard deviations (RSDs) below 5% and a reusability of at least 30 times. FAU - Shih, Yung-Han AU - Shih YH AD - Department of Chemistry, Chung Yuan Christian University 200 Chung Pei Road, Chung Li District, Taoyuan City, 320, Taiwan, R.O.C. FAU - Wang, Kuen-Yun AU - Wang KY AD - Department of Chemistry, Chung Yuan Christian University 200 Chung Pei Road, Chung Li District, Taoyuan City, 320, Taiwan, R.O.C. FAU - Singco, Brenda AU - Singco B AD - Department of Chemistry, Chung Yuan Christian University 200 Chung Pei Road, Chung Li District, Taoyuan City, 320, Taiwan, R.O.C. FAU - Lin, Chia-Her AU - Lin CH AD - Department of Chemistry, Chung Yuan Christian University 200 Chung Pei Road, Chung Li District, Taoyuan City, 320, Taiwan, R.O.C. FAU - Huang, Hsi-Ya AU - Huang HY AD - Department of Chemistry, Chung Yuan Christian University 200 Chung Pei Road, Chung Li District, Taoyuan City, 320, Taiwan, R.O.C. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20161024 PL - United States TA - Langmuir JT - Langmuir : the ACS journal of surfaces and colloids JID - 9882736 EDAT- 2016/10/18 06:00 MHDA- 2016/10/18 06:01 CRDT- 2016/10/18 06:00 PHST- 2016/10/18 06:00 [pubmed] PHST- 2016/10/18 06:01 [medline] PHST- 2016/10/18 06:00 [entrez] AID - 10.1021/acs.langmuir.6b03067 [doi] PST - ppublish SO - Langmuir. 2016 Nov 8;32(44):11465-11473. doi: 10.1021/acs.langmuir.6b03067. Epub 2016 Oct 24.