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学科主题: 物理化学
题名: Polyaniline sheathed electrospun nanofiber bar for in vivo extraction of trace acidic phytohormones in plant tissue
作者: Wu, Qian1, 2;  Wu, Dapeng1;  Guan, Yafeng1
通讯作者: 吴大朋 ;  关亚风
关键词: In vivo solid-phase micro-extraction ;  Polyaniline ;  Electrospun nanofibers ;  Phytohormones ;  Aloe leaf
刊名: JOURNAL OF CHROMATOGRAPHY A
发表日期: 2014-05-16
DOI: 10.1016/j.chroma.2014.03.055
卷: 1342, 期:1, 页:16-23
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Physical Sciences
类目[WOS]: Biochemical Research Methods ;  Chemistry, Analytical
研究领域[WOS]: Biochemistry & Molecular Biology ;  Chemistry
英文摘要: For in vivo extraction of trace and polar components in tissues, extraction materials should be biocompatible, highly permeable to matrix and have high extraction capacity for polar and ionic compounds. In this study, nanofibers (similar to 200 nm) with rough polyaniline (PAn) sheath were prepared successfully for the first time by coaxial electrospinning and coelectrospun polymer sacrificing method. The nanofibers (0.5 mg) were then compressed into tiny bar (Phi 1 mm x 2 mm) and inserted directly into the aloe leaf for in vivo extraction of trace phytohormones. Due to the large surface area (13.97 m(2)/g) of nanofibers and large through pores formed between fibers, high extraction capacity (up to 10 mu g/bar) and permeability to tissue matrix of the tiny bar can be obtained. Moreover, PAn sheath has high adsorption equilibrium constants (10(7)-10(8) mL/mol) for acidic phytohormones in aloe leaf. Four phytohormones were detected by in vivo extraction with a spatial resolution of 3-8 mm(3), temporal resolution of 20 min, and limit of detection down to 60 pg/g. The quantification results were well met with that by traditional in vitro organic solvent extraction. (C) 2014 Elsevier B.V. All rights reserved.
关键词[WOS]: SOLID-PHASE MICROEXTRACTION ;  MASS-SPECTROMETRY ;  BIOLOGICAL-FLUIDS ;  POLYMER BLENDS ;  FIBERS ;  PHARMACEUTICALS ;  CONDUCTIVITY ;  FISH
语种: 英语
WOS记录号: WOS:000335804500003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144137
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Wu, Qian,Wu, Dapeng,Guan, Yafeng. Polyaniline sheathed electrospun nanofiber bar for in vivo extraction of trace acidic phytohormones in plant tissue[J]. JOURNAL OF CHROMATOGRAPHY A,2014,1342(1):16-23.
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