PMID- 28802526 OWN - NLM STAT- MEDLINE DCOM- 20171012 LR - 20181202 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1515 DP - 2017 Sep 15 TI - Sodium hyaluronate-functionalized urea-formaldehyde monolithic column for hydrophilic in-tube solid-phase microextraction of melamine. PG - 54-61 LID - S0021-9673(17)31145-7 [pii] LID - 10.1016/j.chroma.2017.08.005 [doi] AB - A novel sodium hyaluronate-functionalized urea-formaldehyde (UF) monolithic column has been developed by in-situ polycondensation of urea, formaldehyde and sodium hyaluronate (HA). HA plays both the roles of crosslinking and hydrophilic functionalization. The preparation factors including different molecular weights of HA and different amounts of HA were optimized, and then a uniform monolith with satisfactory permeability and hydrophilic binding capacity was obtained. Due to the excellent hydrophilicity of HA, HA-functionalized UF monolith showed higher hydrophilic extraction efficiency than UF monolith, and was applied for hydrophilic in-tube solid-phase microextraction (SPME) of melamine (MEL). Several factors for hydrophilic in-tube SPME, such as ACN percentage in the sampling solution, salt concentration and pH value of the sampling solution, elution volume, sampling and elution flow rate, were investigated with respect to the extraction efficiency of MEL. Under the optimized SPME conditions, the limit of detection (LOD) of MEL was found to be 0.2ng/mL in the milk formula samples, the recoveries of MEL spiked in milk formula samples ranged from 87.3% to 96.7% with relative standard deviations (RSDs) less than 5.1%. Owing to the excellent hydrophilic extraction ability, the novel HA-functionalized UF monolith could provide a promising tool for the sensitive analysis of polar analytes in complicated samples. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Wang, Jiabin AU - Wang J AD - Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou, 350002, China. Electronic address: jbwang@fzu.edu.cn. FAU - Jiang, Nan AU - Jiang N AD - Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou, 350002, China. FAU - Cai, Zhengmiao AU - Cai Z AD - Institute of Food Safety and Environment Monitoring, Fuzhou University, Fuzhou, 350108, China. FAU - Li, Wenbang AU - Li W AD - Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou, 350002, China. FAU - Li, Jianhua AU - Li J AD - Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou, 350002, China. FAU - Lin, Xucong AU - Lin X AD - Institute of Food Safety and Environment Monitoring, Fuzhou University, Fuzhou, 350108, China. FAU - Xie, Zenghong AU - Xie Z AD - Institute of Food Safety and Environment Monitoring, Fuzhou University, Fuzhou, 350108, China. FAU - You, Lijun AU - You L AD - Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou, 350002, China. FAU - Zhang, Qiqing AU - Zhang Q AD - Institute of Biomedical and Pharmaceutical Technology, Fuzhou University, Fuzhou, 350002, China; Key Laboratory of Biomedical Material of Tianjin, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China. Electronic address: zhangqiq@126.com. LA - eng PT - Journal Article DEP - 20170803 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Triazines) RN - 1HG84L3525 (Formaldehyde) RN - 8W8T17847W (Urea) RN - 9004-61-9 (Hyaluronic Acid) RN - 9NEZ333N27 (Sodium) RN - N3GP2YSD88 (melamine) SB - IM MH - Formaldehyde/*chemistry MH - Hyaluronic Acid/*chemistry MH - Hydrophobic and Hydrophilic Interactions MH - Limit of Detection MH - Sodium/chemistry MH - Solid Phase Microextraction/*instrumentation/*methods MH - Triazines/analysis/*isolation & purification MH - Urea/*chemistry OTO - NOTNLM OT - Hydrophilic interaction OT - In-tube solid-phase microextraction OT - Melamine OT - Sodium hyaluronate OT - Urea-formaldehyde monolithic column EDAT- 2017/08/15 06:00 MHDA- 2017/10/13 06:00 CRDT- 2017/08/14 06:00 PHST- 2017/06/13 00:00 [received] PHST- 2017/07/31 00:00 [revised] PHST- 2017/08/01 00:00 [accepted] PHST- 2017/08/15 06:00 [pubmed] PHST- 2017/10/13 06:00 [medline] PHST- 2017/08/14 06:00 [entrez] AID - S0021-9673(17)31145-7 [pii] AID - 10.1016/j.chroma.2017.08.005 [doi] PST - ppublish SO - J Chromatogr A. 2017 Sep 15;1515:54-61. doi: 10.1016/j.chroma.2017.08.005. Epub 2017 Aug 3.