Ultrasound-assisted single-drop microextraction for the determination of cadmium in vegetable oils using high-resolution continuum source electrothermal atomic absorption spectrometry

Almeida, Jorge S.; Anunciação, Taiana A.; Brandão, Geovani Cardoso; Dantas, Alailson F.; Lemos, Valfredo Azevedo; Teixeira, Leonardo Sena Gomes

doi:10.1016/j.sab.2015.03.002

Cited by 43 publications

(10 citation statements)

References 26 publications

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“…In single-drop microextraction (SDme), microliter amounts (from 1 to 8 μL) of an extracting solvent are suspended in a syringe needle and directly immersed in the sample or in the headspace (Pinto and Pedroso 2015). multiresidue determination of pesticides (Dos Anjos and De Andrade 2014), as well as the determination of Cd in vegetable oils (Almeida et al 2015) demonstrated the successful use of SDme for sample preparation, with a diminution of solvent consumption from several mL to few μL.…”

Section: Liquid-phase Microextractionmentioning

confidence: 99%

An overview of the Brazilian contributions to Green Analytical Chemistry

Gama

Melchert

Paixão

et al. 2019

An. Acad. Bras. Ciênc.

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Green Analytical Chemistry (GAC) is a research field that seeks for more sustainable analytical approaches to minimize the toxicity and amounts of wastes without hindering the analytical performance. This is a trend in Analytical Chemistry worldwide and because of the diversity of innovations on this subject, Brazil stands out as the third in the list of the main contributors to GAC, with ca. 11.2% of the published articles. Significant innovations and interesting applications in several fields have been presented and Brazil is continuously moving from Chemistry to Green Chemistry also in the Analytical Chemistry field. Selected contributions for sample preparation, spectro-and electroanalysis, separation techniques, chemometrics, and also procedures for point-of-care measurements are critically reviewed.

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Section: Liquid-phase Microextractionmentioning

confidence: 99%

An overview of the Brazilian contributions to Green Analytical Chemistry

Gama

Melchert

Paixão

et al. 2019

An. Acad. Bras. Ciênc.

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“…Almeida et al 121 introduced a UA-SDME method combined with high-resolution continuum source electrothermal atomic absorption spectrometry (HR-CS-ET-AAS). They used a two-level full-factorial design program for optimization of analytical parameters.…”

Section: Single-drop Microextraction (Sdme)mentioning

confidence: 99%

Latest trends, green aspects, and innovations in liquid-phase--based microextraction techniques: a review

Yılmaz¹,

Soylak²

2016

Turk J Chem

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Liquid-phase microextraction (LPME) methods including single-drop microextraction (SDME), hollow-fiber LPME (HF-LPME), and dispersive liquid-liquid microextraction (DLLME) have in the very short time since their invention grabbed the attention of scientists. Up to now, LPME methods have shown important innovations for the extraction and preconcentration of both inorganic and organic trace analytes from different matrices. These LPME methods offer unique advantages such as high preconcentration factor for target analytes in a single step, low cost, simplicity, excellent preconcentration capability, sample cleanup and integration of steps, and combined use with almost every analytical measurement technique. We describe the milestones and the combined use of different types of LPME methods as well as the green aspects and advantages and shortcomings of known LPME protocols. In addition, we discuss the main results and innovations of different types of LPME published in the period 2010-2016 and we compare the performance of these techniques to that of other recent techniques.

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“…An acidic medium was used as extractant for the preconcentration of Cd in vegetable oils by DI-UA-SDME [37]. A reduction in sensitivity was reported when using a medium containing HNO 3 due to the destruction of the pyrolytic surface of graphite furnace…”

Section: Aqueous Solutionsmentioning

confidence: 99%

“…Several reviews focused on HR-CS-GFAAS are available in the literature for interesting readers [145][146][147][148][149].The combination of LPME-HR-CS-GFAAS has been performed in few recent publications. Concretely, they involved the preconcentration of Cd from vegetable oils by UA-SDME [37], Cr from effluents and water sources by DLLME-SFO [67] and Pt from geological samples and spent automobile converter by DSDME [150] prior to HR-CS-GFAAS. HR-CS-GFAAS seems advantageous after LPME preconcentration due to the multielemental capability and spectral correction functions.…”

Section: Advances In Gfaas Instrumentationmentioning

confidence: 99%