期刊
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
卷 49, 期 6, 页码 645-657出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00103624.2017.1417419
关键词
Cobalt nanoparticles; flame atomic absorption spectrometry; lead determination; preconcentration
资金
- Ilam University Research Council
In this study, cobalt magnetic nanoparticles (MNPs) were synthesized and then modified by sodium dodecyl sulfate (SDS) and 2-(5-bromo-2-pyridylazo)-5-diethyl aminophenol ligand (5-Br-PADAP), through a chemical precipitation method. Characterization of the prepared MNP adsorbents was performed by Fourier transform infrared and transmission electron microscopy. Cobalt nanoparticles (NPs) surface modified with SDS and 5-Br-PADAP was evaluated as a nanoparticulate solid-phase extraction (SPE) absorbent for lead ions Pb(II) from water and standard samples, prior to its flame atomic absorption spectrometry determination. Effects of pH, amount of sorbent, desorption solvent, adsorption time, desorption time, and interfering ion concentration on extraction efficiency were investigated. Under optimal conditions, the calibration curve was linear in the range of 1.0-500 ng mL(-1)of Pb(II) with R-2 = 0.998. Detection limit was 1.6 ng mL(-1) in the original solution (3S(b)/m), and the relative standard deviation for replicate determination of 0.5 g mL(-1) Pb(II) was +/- 2.7%.
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