PMID- 24401414 OWN - NLM STAT- MEDLINE DCOM- 20140902 LR - 20140109 IS - 1873-3573 (Electronic) IS - 0039-9140 (Linking) VI - 119 DP - 2014 Feb TI - Determination of five pyrethroids in tea drinks by dispersive solid phase extraction with polyaniline-coated magnetic particles. PG - 268-75 LID - S0039-9140(13)00881-3 [pii] LID - 10.1016/j.talanta.2013.11.007 [doi] AB - The polyaniline-coated magnetic particles with bowl-shaped morphology (Fe3O4/C/PANI microbowls) were successfully prepared and characterized by scanning electron microscopy, transmission electron microscopy and vibrating sample magnetometry. The prepared microbowls were used as the magnetic adsorbent in dispersive solid phase extraction of five pyrethroids, including cyhalothrin, beta-cypermethrin, esfenvalerate, permethrin and bifenthrin in plain tea drinks. The effects of experiment factors, including amount of Fe3O4/C/PANI microbowls, pH value, ultrasound extraction time and desorption conditions, were investigated. The extraction recoveries obtained with 8 mg of magnetic microbowls were satisfactory, and the microbowls can be reused after easy washing. Thus, a simple, selective and effective method for the determination of the pyrethroids was established successfully. The results showed that the method had good linearity (r=0.9992-0.9998), and the limits of detections (LODs) were from 0.025 to 0.032 ng mL(-1). The intra-day and inter-day relative standard deviations (RSDs) were in the range of 2.4-6.1% and 3.5-8.8%, respectively. Recoveries obtained by analyzing the real tea drinks were in the range of 72.1-118.4%. CI - (c) 2013 Published by Elsevier B.V. FAU - Wang, Yuanpeng AU - Wang Y AD - College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China. FAU - Sun, Ying AU - Sun Y AD - College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China. FAU - Gao, Yan AU - Gao Y AD - College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China. FAU - Xu, Bo AU - Xu B AD - College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China. FAU - Wu, Qiong AU - Wu Q AD - College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China. FAU - Zhang, Hanqi AU - Zhang H AD - College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China. FAU - Song, Daqian AU - Song D AD - College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China. Electronic address: songdq@jlu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131109 PL - Netherlands TA - Talanta JT - Talanta JID - 2984816R RN - 0 (Aniline Compounds) RN - 0 (Pyrethrins) RN - 0 (Tea) RN - 0 (polyaniline) SB - IM MH - Aniline Compounds/*chemistry MH - Beverages/*analysis MH - Chromatography, Liquid/methods MH - *Magnetics MH - Microscopy, Electron, Scanning MH - Microscopy, Electron, Transmission MH - Pyrethrins/*analysis MH - Solid Phase Extraction/*methods MH - Spectrophotometry, Ultraviolet/methods MH - Tea/*chemistry OTO - NOTNLM OT - Dispersive solid phase extraction OT - Polyaniline-coated magnetic microbowls OT - Pyrethroids OT - Tea drinks OT - Ultra fast liquid chromatography EDAT- 2014/01/10 06:00 MHDA- 2014/09/03 06:00 CRDT- 2014/01/10 06:00 PHST- 2013/07/09 00:00 [received] PHST- 2013/10/18 00:00 [revised] PHST- 2013/11/01 00:00 [accepted] PHST- 2014/01/10 06:00 [entrez] PHST- 2014/01/10 06:00 [pubmed] PHST- 2014/09/03 06:00 [medline] AID - S0039-9140(13)00881-3 [pii] AID - 10.1016/j.talanta.2013.11.007 [doi] PST - ppublish SO - Talanta. 2014 Feb;119:268-75. doi: 10.1016/j.talanta.2013.11.007. Epub 2013 Nov 9.