Fe3O4@ZrO2 nanoparticles magnetic solid phase extraction coupled with flame atomic absorption spectrometry for chromium(III) speciation in environmental and biological samples

Wu, Yiwei; Zhang, Jing; Liu, Junfeng; Chen, Lin; Deng, Zhenli; Han, Ming‐Yong; Wei, Xiaoshu; Yu, Aimin; Zhang, Haili

doi:10.1016/j.apsusc.2012.03.057

Cited by 96 publications

(27 citation statements)

References 23 publications

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“…The advantage of the developed methodology is a fact that only 1 mg of Al 2 O 3 /nano-G is enough to preconcentrate trace amount of chromium ions. Meanwhile, according to Table 6, the method using Fe 3 O 4 @SiO 2 @CTS magnetic nanoparticles [39], Fe 3 O 4 /Al 2 O 3 [40], Fe 3 O 4 @ZrO 2 [41], and Nb 2 O 5 –SiO 2 [42] required 20, 30, 50, and 100 times higher mass of sorbent than synthesized Al 2 O 3 /nano-G. Furthermore, the mass of Al 2 O 3 /nano-G is less than the mass of the most other carbon sorbents based on modified CNTs and GO.…”

Section: Resultsmentioning

confidence: 99%

Alumina/nano-graphite composite as a new nanosorbent for the selective adsorption, preconcentration, and determination of chromium in water samples by EDXRF

et al. 2018

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Obtaining new nanocomposites with sorption properties towards chromium is highly important not only from the environmental point of view but also for developing eco-friendly methods of chromium determination. The potential use of aluminum oxide-coated nano-graphite (Al2O3/nano-G) as a new nanosorbent in ultrasound-assisted dispersive micro-solid-phase extraction (DMSPE) for rapid speciation of trace chromium(III) and chromium(VI) ions in natural water was evaluated. In the developed method, the crucial issue is the new nanocomposite synthesized by coating alumina on a nano-graphite surface with sorption properties. Structural researches of the nanocomposite were carried out by scanning electron microscopy (SEM), powder X-ray diffraction (XRD), and Raman spectroscopy. Maximum adsorption capacity of Al2O3/nano-G towards Cr(III) was 32.8 mg g−1. The influence of the method’s factors like pH, sample volumes, contact time, coexisting ions, and humic acid on the recovery of chromium was examined. The nanocomposites have been found to be stable and effective as a sorbent in water with high concentrations of selected cations and anions present in water as well as in water of various pH. Al2O3/nano-G is selective for Cr(III) in presence of Cr(VI). Cr(III) was determined by the developed method, total Cr after reduction of Cr(VI) to Cr(III), and Cr(VI) was calculated as the difference between total Cr and Cr(III). After sorption, the nanocomposite with chromium was collected on 5-mm diameter filters and analyzed by energy-dispersive X-ray fluorescence spectrometry (EDXRF) to determine the chromium concentration. The method was characterized by correlation coefficient 0.999, limit of detection (LOD) 0.04 ng mL−1, and relative standard deviation (RSD) 3.5%. Al2O3/nano-G combined with proposed DMSPE/EDXRF was verified by analysis of certificate reference material of natural water (NIST 1640a). Graphical abstractᅟ

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Section: Resultsmentioning

confidence: 99%

Alumina/nano-graphite composite as a new nanosorbent for the selective adsorption, preconcentration, and determination of chromium in water samples by EDXRF

et al. 2018

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“…When using a highly sensitive detector, high EFs and PFs are relatively unimportant. Analytical instruments that have been used to determine trace elements include inductively coupled plasma atomic emission spectrometry (ICP-AES) and inductively coupled plasma optical emission spectrometry (ICP-OES) [45,67,68]; inductively coupled plasma mass spectrometry (ICP-MS) [3,28,29,31,[69][70][71][72][73][74][75][76][77][78][79]; electrothermal atomic absorption spectrometry (ET-AAS) and graphite furnace atomic absorption spectrometry (GF-AAS) [4,12,33,36,38,48,[80][81][82][83][84][85][86][87]; hydride-generation atomic absorption spectrometry (HG-AAS) [88]; flame atomic absorption spectrometry (FAAS) [35, 89,90]; and atomic fluorescence spectrometry (AFS) [27,74,[91][92][93][94][95].…”

Section: Application In Trace Element Assaysmentioning

confidence: 99%

“…This field remains nascent, with the application of MNPs as sorbents for speciation only having emerged over the last five years, withCr speciation [35, 36,89] …”

mentioning

confidence: 99%

Recent trends in nanomaterial-based microanalytical systems for the speciation of trace elements: A critical review

Tseng

Hsu

Shiea

et al. 2015

Analytica Chimica Acta

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“…These materials include silica, alumina, zirconium, and ferrites [46,69,70]. Among these coating materials, silica and alumina have been reported with most applications in precious metals determination and separation via SPE.…”

Section: Magnetic Particles With Inorganic Coatingmentioning

confidence: 99%

Magnetic Adsorbents for the Recovery of Precious Metals from Leach Solutions and Wastewater

Aghaei

Alorro

Encila

et al. 2017

Metals

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Precious metals which include the platinum group, gold, and silver, play indispensable roles in high technology industries of the modern world due to their outstanding physical and chemical properties. As a result of diminishing availability of mineral sources, increasing demand, and environmental concerns, the recovery of precious metals from both leaching and industrial waste solutions is becoming a very important technology. Magnetic solid phase extraction (MSPE) is a technique that has received substantial consideration in the separation and recovery of precious metals because of the many advantages it offers compared to conventional methods. This technique is based on the extraction of different analytes from solutions using solid adsorbents with magnetic properties. This review focuses on different types of magnetic adsorbents, the main procedures used for synthesis, characterization and their application in precious metals recovery based on recently published literatures.

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Fe3O4@ZrO2 nanoparticles magnetic solid phase extraction coupled with flame atomic absorption spectrometry for chromium(III) speciation in environmental and biological samples

Cited by 96 publications

References 23 publications

Alumina/nano-graphite composite as a new nanosorbent for the selective adsorption, preconcentration, and determination of chromium in water samples by EDXRF

Alumina/nano-graphite composite as a new nanosorbent for the selective adsorption, preconcentration, and determination of chromium in water samples by EDXRF

Recent trends in nanomaterial-based microanalytical systems for the speciation of trace elements: A critical review

Magnetic Adsorbents for the Recovery of Precious Metals from Leach Solutions and Wastewater

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