Ultrasound assisted-dispersive-micro-solid phase extraction based on bulky amino bimodal mesoporous silica nanoparticles for speciation of trace manganese (II)/(VII) ions in water samples

Shirkhanloo, Hamid; Khaligh, Aisan; Mousavi, Hassan Zavvar; Rashidi, Alimorad

doi:10.1016/j.microc.2015.10.008

Cited by 45 publications

(14 citation statements)

References 42 publications

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“…However, this initial improvement is usually observed to level-off after exceeding a given quantity of adsorbent [28][29][30][31], which disagree with the trend observed in Figure 3(c). A possible hypothesis for this anomalous behaviour could be a self absorption effect occurring during LIBS analysis of the analyte enriched solid.…”

Section: Optimization Of the Dµspe(ac) Procedurescontrasting

confidence: 70%

Dispersive micro solid-phase extraction (DµSPE) with graphene oxide as adsorbent for sensitive elemental analysis of aqueous samples by laser induced breakdown spectroscopy (LIBS)

Ruíz

Ripoll

Hidalgo

et al. 2019

Talanta

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In this work, the combination of dispersive micro solid-phase extraction (DµSPE) with laser-induced breakdown spectroscopy (LIBS) was evaluated for simultaneous preconcentration and detection of Zn, Cd, Mn, Ni, Cr and Pb in aqueous samples. Two adsorbent materials were tested in the microextraction step, namely graphene oxide and activated carbon. In both cases, the microextraction process consisted in the dispersion of a small quantity of adsorbent in the sample solution containing the analytes. However, while the use of activated carbon required a previous chelation of the metals, this step was avoided with the use of graphene oxide. After extraction, the analytes retained in the adsorbents were analysed by LIBS. Several experimental factors affecting the extraction of the metals (adsorbent amount, pH and extraction time) were optimized by means of the traditional univariate approach. Under optimum microextraction conditions, the analytical features of the proposed DµSPE-LIBS methods were assessed, leading to limits of detection below 100 µg kg and 50 µg kg with the use of activated carbon and graphene oxide, respectively, as adsorbents in the DµSPE process. Trueness evaluation of the most sensitive procedure was carried out by spike and recovery experiments in a real sample of tap water, leading to recovery values in the range 98-110%.

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Section: Optimization Of the Dµspe(ac) Procedurescontrasting

confidence: 70%

Dispersive micro solid-phase extraction (DµSPE) with graphene oxide as adsorbent for sensitive elemental analysis of aqueous samples by laser induced breakdown spectroscopy (LIBS)

Ruíz

Ripoll

Hidalgo

et al. 2019

Talanta

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“…Recently, an advanced form of SPE, dispersive solid‐phase extraction (d‐SPE), has been developed; in this technique the micro (or nano) amount of adsorbent is directly dispersed into the sample solution containing the target analytes, after extraction time, the adsorbent containing analytes is separated by centrifugation . Various materials have been used as a sorbent such as carbon materials , silica , zeolite , and various polymers .…”

Section: Introductionmentioning

confidence: 99%

New application of chitosan‐grafted polyaniline in dispersive solid‐phase extraction for the separation and determination of phthalate esters in milk using high‐performance liquid chromatography

Razavi

Yazdi

2017

J of Separation Science

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Chitosan-grafted polyaniline was synthesized and applied as a sorbent for the preconcentration of phthalate esters in dispersive solid-phase extraction. By coupling dispersive solid-phase extraction with high-performance liquid chromatography and response surface methodology (central composite design), a reliable, sensitive, and cost-effective method for simultaneous determination of phthalate esters including dimethyl phthalate, di-n-butyl phthalate, and di(2-ethylhexyl)phthalate was developed. The morphology of sorbent had been studied by scanning electron microscopy and its chemical structure confirmed by Fourier transform infrared spectroscopy. Under optimum condition, good linearity was observed in the range of 5.0-5000.0 ng/mL. The limits of detection (S/N = 3) and limits of quantification (S/N = 10) were 0.1-0.3 and 0.3-1 ng/mL, respectively. The relative standard deviations were less than 8.8%. Finally, this procedure was employed for extraction of trace amounts of phthalic acid esters in milk samples, the relative recoveries ranged from 82 to 103%.

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“…Dissolved Fe species were monitored continuously for 20 h by the proposed method. 73 Shirkhanloo et al 38 proposed a novel SPE method for rapid speciation/preconcentration of Mn(II) and and Mn(VII) were 102.3 and 98.8 and 2.3% and 2.8% (n = 10, C = 10 µg L −1 ), respectively. The accuracy of the developed method was verified by analyzing NIST-SRM 1640a.…”

Section: Iron and Manganesementioning

confidence: 99%

Speciation of trace metals and metalloids by solid phase extraction with spectrometric detection: a critical review

Türker¹

2016

Turk J Chem

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Considerable interest is continuing to be shown in the speciation of metals, metalloids, and organometals due to the dependence of their toxicity and mobility on their chemical form. This review focuses on the speciation analysis of metals, metalloids, and organometals by solid phase extraction before spectrometric detection, and all aspects of analytical speciation such as determination of oxidation states and organometallic compounds. Some applications of speciation of metals and metalloids are also presented and discussed in this review. Fractionation, which is used sometimes as speciation, and chromatographic detection are not discussed. This review covers approximately the last four years ( -March 2016, offering a critical review of the speciation of metals, metalloids, and organometals.

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Ultrasound assisted-dispersive-micro-solid phase extraction based on bulky amino bimodal mesoporous silica nanoparticles for speciation of trace manganese (II)/(VII) ions in water samples

Cited by 45 publications

References 42 publications

Dispersive micro solid-phase extraction (DµSPE) with graphene oxide as adsorbent for sensitive elemental analysis of aqueous samples by laser induced breakdown spectroscopy (LIBS)

Dispersive micro solid-phase extraction (DµSPE) with graphene oxide as adsorbent for sensitive elemental analysis of aqueous samples by laser induced breakdown spectroscopy (LIBS)

New application of chitosan‐grafted polyaniline in dispersive solid‐phase extraction for the separation and determination of phthalate esters in milk using high‐performance liquid chromatography

Speciation of trace metals and metalloids by solid phase extraction with spectrometric detection: a critical review

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