Use of ionic liquid in simultaneous microextraction procedure for determination of gold and silver by ETAAS

Ashkenani, Hamid; Taher, Mohammad Ali

doi:10.1016/j.microc.2012.03.005

Cited by 61 publications

(27 citation statements)

References 29 publications

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“…Instrumentation such as inductively-coupled plasma mass spectrometry (ICP-MS), coupled with e.g., preconcentration onto TiO 2 nanotubes (Chen et al, 2014) or use of high performance liquid chromatography (HPLC) (Ta et al, 2014), have been shown to work well with grab samples of fresh waters, with detection limits as low as 1.3 ng/L (Chen et al, 2014). While lower detection limits can technically be achieved by ICP-MS methods (i.e., <1 ng/L), such methods require a high degree of analytical purity and are thus not suitable for environmental samples where matrix conditions are not ideal e.g., if samples exhibit high salinity (Ashkenani and Taher, 2012;Chen et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal distribution of Au and other trace elements in an estuary using the diffusive gradients in thin films technique and grab sampling

Lucas

Salmon

Rate

et al. 2015

Geochimica et Cosmochimica Acta

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Section: Introductionmentioning

confidence: 99%

Spatial and temporal distribution of Au and other trace elements in an estuary using the diffusive gradients in thin films technique and grab sampling

Lucas

Salmon

Rate

et al. 2015

Geochimica et Cosmochimica Acta

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“…In addition, IL-based dispersive liquid-liquid microextraction (IL-DLLME) was also used in the extraction of not only organics like phenolic compounds (Jiang et al, 2011), phthalate and fluoroquinolones (Vázquez et al, 2012), but also inorganic elements and species such as Au(III)/Ag(I) (Ashkenani and Taher, 2012), Tl(I) (Anthemidis and Ioannou, 2012), Cr(III) and Cr(VI) (López-García et al, 2012) from water samples.…”

Section: Introductionmentioning

confidence: 99%

Dispersive liquid–liquid microextraction of silver nanoparticles in water using ionic liquid 1-octyl-3-methylimidazolium hexafluorophosphate

Chen

Sun

et al. 2016

Journal of Environmental Sciences

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Using the ionic liquid (IL) 1-octyl-3-methylimidazolium hexafluorophosphate as the extractant and methanol as the dispersion solvent, a dispersive liquid-liquid microextraction method was developed to extract silver nanoparticles (AgNPs) from environmental water samples.Parameters that influenced the extraction efficiency such as IL concentration, pH and extraction time were optimized. Under the optimized conditions, the highest extraction efficiency for AgNPs was above 90% with an enrichment factor of >90. The extracted AgNPs in the IL phase were identified by transmission electron microscopy and ultraviolet-visible spectroscopy, and quantified by inductively coupled plasma mass spectrometry after microwave digestion, with a detection limit of 0.01 μg/L. The spiked recovery of AgNPs was 84.4% with a relative standard deviation (RSD) of 3.8% (n = 6) at a spiked level of 5 μg/L, and 89.7% with a RSD of 2.2% (n = 6) at a spiked level of 300 μg/L, respectively. Commonly existed environmental ions had a very limited influence on the extraction efficiency. The developed method was successfully applied to the analysis of AgNPs in river water, lake water, and the influent and effluent of a wastewater treatment plant, with recoveries in the range of 71.0%-90.9% at spiking levels of 0.11-4.7 μg/L. IntroductionSilver nanoparticles (AgNPs) have been applied in various products, such as plastics, household textiles, medicine, and cosmetics, due to their excellent antimicrobial properties (Benn and Westerhoff, 2008;Blaser et al., 2008;Emam et al., 2013;Meyer et al., 2011;Quadros and Marr, 2011;Sondi and Salopek-Sondi, 2004;Shahverdi et al., 2007;Sallum et al., 2014;Tolaymat et al., 2010). As a result, AgNPs can be released into the environment, and result in potential risk to human beings and other biological organisms Khan et al., 2011;Losert et al., 2014;Sharma et al., 2014;Tian et al., 2013;Yu et al., 2012). It was reported that orally delivered AgNPs induced deleterious effects on the liver and heart for mammals (Elle et al., 2013). Additionally, AgNPs could accumulate and transport along the food chain (Zhao and Wang, 2010). However, the mechanism of AgNP toxicity is not clear, although it was reported that the morphological A v a i l a b l e o n l i n e a t w w w . s c i e n c e d i r e c t . c o m ScienceDirect w w w . e l s e v i e r . c o m / l o c a t e / j e s characteristics such as surface charge, particle size and shape were related to their toxicity (Badawy et al., 2011;Burkowska-But et al., 2014;Carlson et al., 2008;Pal et al., 2007). This lack of knowledge could be ascribed to the complexity of nanoparticles themselves, as well as the lack of methods that are capable of monitoring the trace AgNPs from complex environmental and biological samples without disturbing their characteristics (Farré et al., 2011).4 1 ( 2 0 1 6 ) 2 1 1 -2 1To date, several methods have been developed for the separation and determination of AgNPs such as field flow fractionation, anodic particle coulometry, and hydrodynamic chromato...

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“…The separation and determination of silver ion at low concentrations and in the presence of other cations at high concentration requires selective techniques. The most usually used techniques for separation and preconcentration of trace amounts of silver are liquid-liquid extraction (Mohammadi et al 2009;Ahmed et al 1988), ion exchange resin (Dicinoski et al 2000), ion liquid micro extraction (Ashkenani and Taher 2012), cloud point extraction (Manzoori, et al 2007;da Silva et al 1998;da Silva, et al 2000), solid phase extraction (SPE) (Hajiagha-Babaei et al 2001;Yang et al 2009;Pu and Sun 1998;Safavi, et al 2004) And copericipitation (Pei and Fang 1994;Bloom and Crecelius 1984). Among these methods, Coprecipitation methods are mainly suggested for preconcentration of trace metal ions from various samples (Mendil et al indium, and samarium have been used (Soylak and Balgunes 2008;Doner and Ege 2005;Divrikli, Elci 2002;Saracoglu et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Separation of Ag(I) Ions fromLepidium draba L. Plant and Water and Standard Samples by Carrier Element-Free Coprecipitation Method Prior to their Flame Atomic Absorption Spectrometric Determination

Roushani

Baghelani

Abbasi

et al. 2016

Communications in Soil Science and Plant Analysis

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In this work, silver iodide (Ag(I)) ions were separated via carrier element-free coprecipitation (CEFC) method by using an organic coprecipitating agent, 1,6-diamino-4-(4-chlornphenyl)-2-oxo-1,2-dihydropyridine-3,5-dicarbonitrile [DCODD] prior to its determination by flame atomic absorption spectrometry (FAAS). Analytical parameters including pH of aqueous solution, amount of DCODD. Standing time, centrifugation rate and time, and sample volume were studied and optimized. Under the best experimental conditions, it was found that extraction can be performed from the sample volume of 500.0 for silver ion (preconcentration factor of 100.0). Linearity was maintained between 0.006-1.50 µg.mL −1 for silver. Detection limit for silver based on 3Sb was 1.60 ng.mL −1 . The relative standard deviation of eight replicate measurement of 0.20 Downloaded by [University of Cambridge] at 00:38 11 June 2016A c c e p t e d M a n u s c r i p t 2 µg.mL −1 of silver was 2.10%. Finally, the developed method was successfully applied to extraction and determination of the silver ions in the Lepidium draba L plant, water and standard samples and satisfactory results were obtained.

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Use of ionic liquid in simultaneous microextraction procedure for determination of gold and silver by ETAAS

Cited by 61 publications

References 29 publications

Spatial and temporal distribution of Au and other trace elements in an estuary using the diffusive gradients in thin films technique and grab sampling

Spatial and temporal distribution of Au and other trace elements in an estuary using the diffusive gradients in thin films technique and grab sampling

Dispersive liquid–liquid microextraction of silver nanoparticles in water using ionic liquid 1-octyl-3-methylimidazolium hexafluorophosphate

Separation of Ag(I) Ions fromLepidium draba L. Plant and Water and Standard Samples by Carrier Element-Free Coprecipitation Method Prior to their Flame Atomic Absorption Spectrometric Determination

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