期刊
MICROCHIMICA ACTA
卷 183, 期 1, 页码 241-247出版社
SPRINGER WIEN
DOI: 10.1007/s00604-015-1631-4
关键词
Nanoporous anodized alumina; Anodization; Sorption; Sorbent; Scanning electron microscopy; Nanostructure; Gas chromatography; Mass spectrometry
We report on a new kind of fiber for solid-phase microextraction (SPME). It consists of a highly ordered nanoporous anodized alumina wire coated with nano-structured hydroxyapatite. A highly ordered nanoporous anodized alumina film was created on the aluminum wire by electrochemical anodization and then modified with nanostructured hydroxyapatite that was fabricated by a sol-gel approach from calcium nitrate and phosphoric acid. The resulting fiber was applied to the extraction of phenol as well as mono-, di- and trichlorophenols from aqueous samples prior to their determination by GC-MS. The effects of extraction temperature, extraction time, ionic strength, stirring rate, pH value as well as desorption temperature and time were studied. Under optimum conditions, the repeatability for one fiber (for n = 5), expressed as the relative standard deviation, is between 4.2 and 8.3 %. The detection limits are between 0.5 and 1.2 ng.mL(-1). The method is simple, fast, and inexpensive. The fibers are thermally stable and yield better recoveries than conventional methods of analysis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据