Preparation, characterization and application of thiosemicarbazide grafted multiwalled carbon nanotubes for solid-phase extraction of Cd(II), Cu(II) and Pb(II) in environmental samples

被引：27

作者：

Zhang, Jie ^{[1
]}

机构：

[1] Tongji Univ, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL SCIENCES | 2013年 / 25卷 / 11期

关键词：

multiwalled carbon nanotubes; solid-phase-extraction; preconcentration; heavy metal ions; NATURAL-WATER SAMPLES; SILICA-GEL; PRECONCENTRATION; IONS; COPPER(II); ENRICHMENT; OXIDATION; SORBENTS; FE(III); ACID;

D O I：

10.1016/S1001-0742(12)60329-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Thiosemicarbazide-grafted multi-walled carbon nanotubes were prepared and employed to investigate the pre-concentration of Cd(II), Cu(II) and Pb(II) from aqueous solution prior to their determination by ICP-OES. The resulting material was characterized by FT-IR, TGA and SEM. Various factors influencing the separation and pre-concentration were investigated. The enrichment factor typically is 60. Under optimized experimental conditions, the maximum adsorption capacities of Cd(II), Cu(II) and Pb(II) were found to be 1.98, 10.94, 3.69 mg/g, and the relative standard deviations are < 3.5% (n = 6). The new adsorbent shows superior reusability and stability. The procedure was successfully applied to the determination of trace quantities of Cd(II), Cu(II) and Pb(II) in water samples.

引用

页码：2331 / 2337

页数：7

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