New approach for detection of chromate ion by preconcentration with mixed metal hydroxide coupled with fluorescence sensing of copper nanoclusters

Khonkayan, Kanokwan; Sansuk, Sira; Srijaranai, Supalax; Tuntulani, Thawatchai; Saiyasombat, Chatree; Busayaporn, Wutthikrai; Ngeontae, Wittaya

doi:10.1007/s00604-017-2320-2

Cited by 23 publications

(9 citation statements)

References 24 publications

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“…Therefore, the development of new and sensitive analytical methods for chromium speciation in water samples is well-founded. Techniques which are used most commonly for the determination of Cr(VI) species are flame atomic absorption spectrometry (FAAS) [ 2 , 3 ], electrothermal atomic absorption spectrometry (ETAAS) [ 4 , 5 ], inductively coupled plasma optical emission spectrometry (ICP-OES) [ 6 , 7 ], inductively coupled plasma mass spectrometry (ICP-MS) [ 8 , 9 ], and X-ray fluorescence spectrometry (XRF) [ 10 , 11 ]. Although, some of these techniques, e.g.…”

Section: Introductionmentioning

confidence: 99%

Selective adsorption and determination of hexavalent chromium ions using graphene oxide modified with amino silanes

et al. 2018

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Novel adsorbents are described for the preconcentration of chromium(VI). Graphene oxide (GO) was modified with various amino silanes containing one, two, or three nitrogen atoms in the molecule. These include 3-aminopropyltriethoxysilane (APTES), N-(3-trimethoxysilylpropyl)ethylenediamine (TMSPEDA), and N1-(3-trimethoxysilylpropyl)diethylenetriamine (TMSPDETA). The resulting GO derivatives were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, and energy-dispersive X-ray fluorescence spectrometry (EDXRF). Adsorption studies show that these GO based sorbents are highly selective for Cr(VI) in the presence of Cr(III) at pH 3.5. Although the amino silanes applied in modification of GO contain different numbers of nitrogen atoms, the maximum adsorption capacities of GO derivatives are very similar (13.3–15.1 mg·g−1). Such results are in accordance with spectroscopy studies which show that the amount of amino silanes attached to GO decreases in the order of APTES > TMSPEDA > TMSPDETA. The APTES-modified GO was applied to selective and sensitive extraction of Cr(VI) ions prior to quantitation by low-power EDXRF using the Cr Kα line. The Cr(VI) ions need not be eluted from the solid adsorbent. The method has a 0.17 ng·mL−1 detection limit, and the recovery is 99.7 ± 2.2% at a spiking level of 10 ng·mL−1. The method was successfully applied to the determination of Cr(VI) in water samples. Graphical abstractGraphene oxide adsorbents modified with various amino silanes are described for the preconcentration and speciation of trace and ultratrace levels of chromium ions. Electronic supplementary materialThe online version of this article (10.1007/s00604-017-2640-2) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Selective adsorption and determination of hexavalent chromium ions using graphene oxide modified with amino silanes

et al. 2018

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“…In addition, Cr(III) can also be oxidized to Cr(VI) in the presence of excess oxygen and converted into a more toxic form Cr(VI). CrO 4 2is a common toxic anion that can accumulate in organisms, causing liver disease, gene mutations, malformations, and cancer [11]. The detection of the presence of low chromate concentration is the direction in which remediation efforts are essential to identify contaminated sites and control areas.…”

Section: Introduction mentioning

confidence: 99%

Luminescent sensing film based on sulfosalicylic acid modified Tb(III)-doped yttrium hydroxide nanosheets

Yang

Zheng

et al. 2018

J Adv Ceram

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Sulfosalicylic acid (SSA) was used as an intercalation agent and an excellent antenna to synthesize layered rare-earth hydroxide (LRH) materials and directly obtain SSA-modified terbium-doped ytterbium hydroxide nanosheets by mechanical exfoliation. The crystal structure and morphologies of the LRHs and nanosheets were determined by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The particle size and zeta potential of the prepared nanosheets were also analyzed. The as-prepared nanosheets exhibited excellent luminescent properties. The positively charged nanosheets were electrophoretically deposited on a conductive glass to form a thin film. The luminescence of this thin film can be quenched by chromate (CrO 4 2-) and bilirubin (BR), which shows good sensing properties. The quenching mechanism of the sensing film by CrO 4 2and BR was discussed based on the spectra and structure of the film.

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“…While most of the studies employed a FAAS detection system, an attempt at chromium(VI) determination with fluorescence, using Mg-Al mixed hydroxide as the dSPE sorbent, was reported [ 60 ]. The method showed good selectivity; however, the fluorescence detection sensitivity was poor, even when using a novel probe, while also being applicable in only a narrow concentration range.…”

Section: Sorbents Based On Layered Double Hydroxidesmentioning

confidence: 99%

Recent Materials Developed for Dispersive Solid Phase Extraction

Ścigalski¹,

Kosobucki²

2020

Molecules

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Solid phase extraction (SPE) is an analytical procedure developed with the purpose of separating a target analyte from a complex sample matrix prior to quantitative or qualitative determination. The purpose of such treatment is twofold: elimination of matrix constituents that could interfere with the detection process or even damage analytical equipment as well as enriching the analyte in the sample so that it is readily available for detection. Dispersive solid phase extraction (dSPE) is a recent development of the standard SPE technique that is attracting growing attention due to its remarkable simplicity, short extraction time and low requirement for solvent expenditure, accompanied by high effectiveness and wide applicability. This review aims to thoroughly survey recently conducted analytical studies focusing on methods utilizing novel, interesting nanomaterials as dSPE sorbents, as well as known materials that have been only recently successfully applied in dSPE techniques, and evaluate their performance and suitability based on comparison with previously reported analytical procedures.

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New approach for detection of chromate ion by preconcentration with mixed metal hydroxide coupled with fluorescence sensing of copper nanoclusters

Cited by 23 publications

References 24 publications

Selective adsorption and determination of hexavalent chromium ions using graphene oxide modified with amino silanes

Selective adsorption and determination of hexavalent chromium ions using graphene oxide modified with amino silanes

Luminescent sensing film based on sulfosalicylic acid modified Tb(III)-doped yttrium hydroxide nanosheets

Recent Materials Developed for Dispersive Solid Phase Extraction

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