Synthesis and characterization of pyridine-functionalized magnetic mesoporous silica and its application for preconcentration and trace detection of lead and copper ions in fuel products

被引：56

作者：

Behbahani, Mohammad ^{[1
]}

Akbari, Azam Ali ^{[1
]}

Amini, Mostafa M. ^{[1
]}

Bagheri, Akbar ^{[1
]}

机构：

[1] Shahid Beheshti Univ, Dept Chem, Tehran, Iran

来源：

ANALYTICAL METHODS | 2014年 / 6卷 / 21期

关键词：

SOLID-PHASE EXTRACTION; ULTRA TRACES; SAMPLES; WATER; CADMIUM; POLYMER; NANOPARTICLES; SPECTROMETRY; ADSORPTION; TEMPLATES;

D O I：

10.1039/c4ay01692k

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We present a study on the synthesis, characterization and application of a pyridine-functionalized magnetic mesoporous silica material (called Py-Fe3O4@MCM-41) as an adsorbent for the solid phase extraction of trace quantities of lead and copper ions. The modified Fe3O4@MCM-41 can be easily separated from an aqueous solution by applying an external magnetic field. Effects of pH, amount of functionalized Fe3O4@MCM-41, extraction time, type and quantity of eluent, desorption time, and interfering ions on the extraction efficiency were evaluated and optimized. Lead and copper ions were then quantified using a flame atomic absorption spectrophotometer. Under the optimized conditions, the detection limit for lead and copper ions was 0.1 mu g L-1 and 0.08 mu g L-1, respectively and the maximum adsorption capacity of the synthesized sorbent for lead and copper ions was 287 mg g(-1) and 194 mg g(-1), respectively. The Py-Fe3O4@MCM-41 sorbent was characterized by thermogravimetric analysis, differential thermal analysis, transmission electron microscopy, Fourier transform infrared spectrometry and X-ray diffraction.

引用

页码：8785 / 8792

页数：8

共 33 条

[11] Application of multiwalled carbon nanotubes modified by diphenylcarbazide for selective solid phase extraction of ultra traces Cd(II) in water samples and food products [J].