Effective and High-Throughput Analytical Methodology for the Determination of Lead and Cadmium in Water Samples by Disposable Pipette Extraction Coupled with High-Resolution Continuum Source Graphite Furnace Atomic Absorption Spectrometry (HR-CS GF AAS)

Cadorim, Heloisa R.; Schneider, Mauana; Hinz, Júlia S.; Luvizon, Fabiana; Dias, Adriana Neves; Carasek, Eduardo; Welz, Bernhard

doi:10.1080/00032719.2019.1596117

Cited by 23 publications

(8 citation statements)

References 33 publications

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“…In addition, it allows for automated and high-throughput preparation when combined with the liquid handling system [18,19]. This sample preparation method has been widely used in the analysis of drugs [14,[18][19][20][21][22][23][24], pesticide residues [16,17,[25][26][27][28][29][30], heavy metal ions [31], and environmental contaminants [32][33][34][35]. In the present work, the parameters of DPX were systematically investigated on the clean-up of neonicotinoid pesticides in bee pollen.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized Salting-Out Assisted Liquid-Liquid Extraction Combined with Disposable Pipette Extraction for Fast Sample Preparation of Neonicotinoid Pesticides in Bee Pollen

Chen

2020

Molecules

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As the main source of nutrients for the important pollinator honeybee, bee pollen is crucial for the health of the honeybee and the agro-ecosystem. In the present study, a new sample preparation procedure has been developed for the determination of neonicotinoid pesticides in bee pollen. The neonicotinoid pesticides were extracted using miniaturized salting-out assisted liquid-liquid extraction (mini-SALLE), followed by disposable pipette extraction (DPX) for the clean-up of analytes. Effects of DPX parameters on the clean-up performance were systematically investigated, including sorbent types (PSA, C18, and silica gel), mass of sorbent, loading modes, and elution conditions. In addition, the clean-up effect of classical dispersive solid-phase extraction (d-SPE) was compared with that of the DPX method. Results indicated that PSA-based DPX showed excellent clean-up ability for the high performance liquid chromatography (HPLC) analysis of neonicotinoid pesticides in bee pollen. The proposed DPX method was fully validated and demonstrated to provide the advantage of simple and rapid clean-up with low consumption of solvent. This is the first report of DPX method applied in bee pollen matrix, and would be valuable for the development of a fast sample preparation method for this challenging and important matrix.

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Section: Introductionmentioning

confidence: 99%

Miniaturized Salting-Out Assisted Liquid-Liquid Extraction Combined with Disposable Pipette Extraction for Fast Sample Preparation of Neonicotinoid Pesticides in Bee Pollen

Chen

2020

Molecules

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“…Regarding the recent publications, raw cork-based approaches have been highlighted in microextraction methodologies whereas they exhibit some unique analytical features that allow for "green", sustainable, and efficient procedures that are relevant to the current environmental concerns [30][31][32][33][34][35][36][37][38]. Table 1 points out the analytical features of the recent applications using raw cork-based methodologies for the extraction of different analytes from various matrices.…”

Section: Introductionmentioning

confidence: 99%

“…Afterward, the resulting powder is conditioned with acetonitrile, and it is ready to be applied as sorbent phase. Raw cork powder has been successfully applied in different microextraction approaches such as bar adsorptive microextraction [30,31], disposable pipette extraction [32,35,36], thin film-solid phase microextraction [33], and rotating disk sorptive extraction [34] as a biosorbent for the reliable determination of organic micropollutants, toxic metals, UV filters, endocrine disruptors, and compounds in aqueous samples as well as pharmaceuticals and lung cancer biomarkers in human urine. Cork exhibits significant hydrophobicity and a number of aromatic rings that can undergo effective π-π interactions with the analytes and substantially enhance the preconcentration ability of the extraction procedures.…”

Section: Introductionmentioning

confidence: 99%

Returning to Nature for the Design of Sorptive Phases in Solid-Phase Microextraction

et al. 2019

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Green analytical chemistry principles aim to minimize the negative impact of analytical procedures in the environment, which can be considered both at close (to ensure the safety of the analysts) and global (to conserve our natural resources) levels. These principles suggest, among other guidelines, the reduction/minimization of the sample treatment and the use of renewable sources when possible. The first aspect is largely fulfilled by microextraction, which is considered to be among the greenest sample treatment techniques. The second consideration is attainable if natural products are used as raw materials for the preparation of new extraction phases. This strategy is in line with the change in our production system, which is being gradually moved from a linear model (take-make-dispose) to a circular one (including reusing and recycling as key terms). This article reviews the potential of natural products as sorbents in extraction and microextraction techniques from the synergic perspectives of two research groups working on the topic. The article covers the use of unmodified natural materials and the modified ones (although the latter has a less green character) to draw a general picture of the usefulness of the materials.Separations 2020, 7, 2 2 of 22 principle identifies one of the trends of current research in analytical sciences, it is difficult to be applied when complex samples containing the analytes at very low concentrations are processed. In such scenarios, the simplification of the sample treatment and the reduction of the sources applied (reagents, energy) can be a more practical objective, at least currently. Microextraction techniques fulfill the latter criteria [8], and they are considered among the greenest sample treatment techniques [9].Microextraction techniques have evolved in the last decade following some key trends. Among them, the development of new extraction phases can be highlighted, considering the context of this review article. In this evolution, the tenth (use of renewable resources) and eleventh (replace or remove toxic reagents) principles of GAC are especially relevant [7]. In the liquid microextraction context, environmentally friendly solvents [10,11] such as CyreneTM [12] and deep eutectic solvents [13] are clear examples of this progress.The paradigm of our production system, which up to now has been based on a linear "take-make-dispose" model, is progressively changed to a circular model [14] where reusing, repairing, refurbishing, and recycling appear as key terms. The use of surpluses of natural products as raw materials for the preparation of new sorbents is an interesting contribution of analytical chemistry for changing the production model. This review article, which combines the vision of two research groups working in the topic, tries to draw the general picture of the potential of natural products for the synthesis of new sorptive phases in solid phase extraction and solid phase microextraction. The article will cover strategies with different green characterist...

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“…Nesse cenário, a Extração em Ponteiras Descartáveis (DPX -Disposable Pipette Extraction) vem se destacando como uma miniaturização da SPE convencional, sendo um tipo de extração em fase sólida, combinando algumas das vantagens da SPE tradicional e apresentando novos recursos (CADORIM et al, 2019). O dispositivo DPX se baseia em ponteira, com capacidade de 1 a 5 mL, com uma pequena quantidade de sorvente contido entre dois filtros (BORDIM et al, 2016; (DO CARMO et al, 2019.…”

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“…A SPE apresenta como desvantagem o tempo de análise elevado, os altos custos dos cartuchos e dos dispositivos comerciais multivias (JARDIM, 2015). O autor supracitado ressalta, que os cartuchos são utilizados uma única vez e, geralmente há baixa reprodutibilidade entre fabricantes e também entre lotes.A SPE tem sido uma das técnicas mais utilizadas no preparo de amostras em análises ambientais, farmacêuticas e de alimentos, nas quais os analitos se encontram em níveis traços (µg Kg -1 a ng Kg -1 ), podendo ser usada para quatro importantes propósitos: extração e/ou concentração do analito, isolamento do analito, isolamento da matriz ou limpeza da amostra (clean-up) e estocagem da amostra (JARDIM, 2015).A DPX é uma versão miniaturizada da SPE convencional combinando algumas das vantagens da SPE e apresentando novos recursos(CADORIM et al, 2019). As vantagens da DPX incluem rápida extração de analitos, boas recuperações, quantidade reduzida de solventes, baixo consumo de amostras e a possibilidade de automação, CADORIM et al, 2019, JARDIM, 2015.…”

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Desenvolvimento de procedimento DPX para determinação sensível de Cu(II) em água para hemodiálise por F AAS utilizando sementes de Moringa oleifera como fase sólida

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Effective and High-Throughput Analytical Methodology for the Determination of Lead and Cadmium in Water Samples by Disposable Pipette Extraction Coupled with High-Resolution Continuum Source Graphite Furnace Atomic Absorption Spectrometry (HR-CS GF AAS)

Cited by 23 publications

References 33 publications

Miniaturized Salting-Out Assisted Liquid-Liquid Extraction Combined with Disposable Pipette Extraction for Fast Sample Preparation of Neonicotinoid Pesticides in Bee Pollen

Miniaturized Salting-Out Assisted Liquid-Liquid Extraction Combined with Disposable Pipette Extraction for Fast Sample Preparation of Neonicotinoid Pesticides in Bee Pollen

Returning to Nature for the Design of Sorptive Phases in Solid-Phase Microextraction

Desenvolvimento de procedimento DPX para determinação sensível de Cu(II) em água para hemodiálise por F AAS utilizando sementes de Moringa oleifera como fase sólida

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