期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 196, 期 -, 页码 187-193出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2011.09.016
关键词
Electrospun nanofiber; Packed fiber solid phase extraction (PFSPE); Lead (II)
资金
- Jiangsu Province Science and Technology Department Foundation [BE2010088]
- National Natural Science Foundation of China [81172720]
- Suzhou Science and Technology Department Foundation [SYJG0912, SYN201006]
- National Basic Research Program of China [2007CB936300]
An electrospun nanofiber was utilized as a sorbent in packed fiber solid phase extraction (PFSPE) for selective separation and preconcentration of lead (II). The nanofiber had a polystyrene (PS) backbone, which was functionalized with dithizone (DZ) by co-electrospinning of a PS solution containing DZ. The nanofiber exhibited its performance in a cartridge prepared by packing 5 mg of nanofiber. The nanofiber was characterized by a scanning electron microscope and IR spectra. The diameter of the nanofiber was less than 400 nm. After being activated by 2.0 mol L-1 NaOH aqueous solution, the nanofiber quantitatively sorbed lead (II) at pH 8.5, and the metal ion could be desorbed from it by three times of elution with a small volume of 0.1 mol L-1 HNO3 aqueous solution. The breakthrough capacity was 16 mu g mg(-1). The nanofiber could be used for concentration of lead (II) from water and other aqueous media, such as plasma with stable recovery in a simple and convenient manner. (C) 2011 Elsevier B.V. All rights reserved.
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