Simultaneous determination of pesticide multiresidues in white wine and rosé wine by SDME/GC-MS

Anjos, Jeancarlo Pereira dos; Andrade, Jailson B. de

doi:10.1016/j.microc.2015.01.009

Cited by 55 publications

(14 citation statements)

References 30 publications

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“…8 However, many disadvantages such as relatively high cost, time consuming analytical processes and the requirement of professional operators emerge simultaneously. 9 Thus, it is of great significance to develop a simple, rapid and selective method for the optosensing of carbofuran.…”

Section: Introductionmentioning

confidence: 99%

Development and Applications of Quantum Dot-based Molecularly Imprinted Polymer Composites for Optosensing of Carbofuran in Water

et al. 2017

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23Chen et al. fabricated and successfully utilized MIP-coated QDs for cyphenothrin detection in river water. 24 However, in these methods the value of fluorescence they collected were all by fluorescence spectrophotometry, which only supplies the fluorescence information of samples illuminated by the light source of the instrument. In addition, the polymers of each sample could not keep the same dispersion state, which resulted in inaccuracies in the detected fluorescence data. So a more effective method was needed.As a new analytical technique, cytometric bead array (CBA) has achieved real-time and rapid detection of targeted 2017 © The Japan Society for Analytical Chemistry † To whom correspondence should be addressed. In this paper, quantum dot (QD)-based molecularly imprinted polymer (MIP) was fabricated and successfully utilized as a fluorescent probe for highly selective and sensitive detection of carbofuran in water samples. The MIPs were synthesized followed by a multi-step swelling and polymerization method, and then labeled with CdSe/ZnS QDs via gradual solvent evaporation. Then the prepared QDs-MIP microspheres were introduced to flow cytometry by virtue of their good dispersibility in water, and fast adsorption and desorption. Under optimized conditions, the fluorescence intensity of QDs-MIP decreased linearly with the increasing of carbofuran in the concentration range of 1 -20 μg L -1 (R 2 > 0.99) and it can detect down to 0.2 μg L -1 of carbofuran. This method was simple, selective and applied successfully to the optosensing of trace carbofuran in water samples with good recoveries ranging from 94.1 ± 3.7 to 98.4 ± 4.5%.

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Section: Introductionmentioning

confidence: 99%

Development and Applications of Quantum Dot-based Molecularly Imprinted Polymer Composites for Optosensing of Carbofuran in Water

et al. 2017

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“…A Cannabis sativa tem sido utilizada por suas propriedades psicoativas há milhares de anos, tendo como principal componente psicoativo o Δ 9 -tetraidrocanabinol (Δ 9 -tetrahydrocannabinol, THC). Os canabinóides mais abundantes são o THC, seu precursor canabidiol e o canabinol, um produto de decomposição formado espontaneamente a partir do THC [2] As principais matrizes para a análise de canabinóides em usuários são: cabelo [3], sangue [4] e urina [5].…”

Section: Introductionunclassified

“…Esta última é a amostra biológica mais utilizada para identificação do uso recente da maconha, por ser mais fácil de coletar, não invasiva e as concentrações e seus produtos de biotransformação são relativamente altas quando comparadas com as demais amostras biológicas [5]. Nessa matriz, o principal metabólito do Δ 9 -tetraidrocanabinol é o composto não psicoativo 11-nor-9-carboxi-Δ 9 -tetraidrocanabinol (11-nor-9-carboxy-Δ 9 -tetrahydrocannabinol, THC-COOH), que é excretado em urina e constitui evidência de uso recente da Cannabis [6].…”

Section: Introductionunclassified

“…As técnicas de microextração, portanto, são as mais estudadas atualmente, com destaque para a microextração em fase sólida (Solid Phase Microextraction, SPME) [3] e a microextração em fase líquida (Liquid Phase Microextraction, LPME) [7] com as suas variações; como a microextração em fase líquida com fibra oca (Hollow Fiber Liquid Phase Microextraction, HF-LPME) [8], a microextração em fase líquida com gota suspensa (Single Drop Microextraction, SDME) [9], microextração com solidificação da gota orgânica flutuante (Solidified Fluoating Organic Drop Microextraction, SFODME) [10] e a microextração líquido-líquido dispersiva (Dispersive Liquid-Liquid Microextraction, DLLME) [11,12]. Esta última abriu novas possibilidades de combinação com outras técnicas [7], dentre elas a microextração líquido-líquido dispersiva com solidificação da gota orgânica flutuante (Dispersive Liquid-Liquid Microextraction -Solidification of a Floating Organic Drop, DLLME-SFO) [13].…”

Section: Introductionunclassified

“…Esta última abriu novas possibilidades de combinação com outras técnicas [7], dentre elas a microextração líquido-líquido dispersiva com solidificação da gota orgânica flutuante (Dispersive Liquid-Liquid Microextraction -Solidification of a Floating Organic Drop, DLLME-SFO) [13]. A eficiência das técnicas de microextração em fase líquida têm sido comprovadas para a determinação de diferentes analitos e amostras, tais como agrotóxicos [14] e hidrocarbonetos policíclicos aromáticos [15] em água, pesticidas em vinhos [9], antibióticos em urina [16] e antidepressivos em plasma humano [17].…”

Section: Introductionunclassified

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Aplicação da microextração líquido-líquido dispersiva com solidificação da gota orgânica flutuante para determinação de 11-nor-9-carboxi-Δ9-tetraidrocanabinol em urina humana com derivação on-line no sistema de injeção cromatográfico

Dórea

Gomes²,

Prata³

et al. 2017

Scientia Plena

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Determinação de 11-nor-9-carboxi-Δ 9 -tetraidrocanabinol em urina humana por microextração líquido-líquido dispersiva com solidificação da gota orgânica flutuante e derivação online no sistema de injeção cromatográficoDetermination of 11-nor-9-carboxy-δ9-tetrahydrocannabinol in human urine by dispersive liquid-liquid microextraction with solidification of a floating organic drop and on-line derivatization in the injection system chromatographic H. A Cannabis sativa é a droga de abuso mais consumidas no mundo. Devido à baixa concentração dos metabólitos em amostras complexas, novas técnicas de extração estão sendo estudadas. O objetivo desse trabalho foi aplicar a Microextração Líquido-Líquido Dispersiva com Solidificação da Gota Orgânica Flutuante (DLLME-SFO) para determinar o 11-nor-9-carboxi-Δ 9 -tetraidrocanabinol (THC-COOH) em urina humana. Além disso, estabelecer um procedimento on line para a derivação do metabólito no injetor cromatográfico. O analito foi extraído da urina depois da hidrólise alcalina do glicuronídeo, usando o solvente de extração 1-dodecanol (30 µL) e o metanol (200 µL) como dispersor. NaCl 1% foi adicionado e o tempo de extração foi de 5 min. A melhor proporção entre BSTFA:extrato para derivação on line do THC-COOH foi 2:2, injetor operado no modo split 1:20 e temperatura de 240 °C. O extrato foi analisado por cromatografia gasosa acoplada a espectrometria de massas no modo tandem (GC-MS/MS), depois da definição dos ions pais (m/z), da energia de excitação (modo ressonante) e dos ions filhos para a quantificação e confirmação (m/z) do canabinóide e do padrão interno deuterado. Os limites de detecção (LD) e de quantificação (LQ) foram 1 e 10 ng mL -1 , respectivamente. O método analítico proposto apresentou vantagens com relação à sensibilidade, especificidade, linearidade e custo com relação à extração em fase sólida, assim como é adequado à química verde e seus limites são apropriados para analisar THC-COOH em urina humana.Palavras-chave: THC-COOH, urina, DLLME-SFO.Cannabis sativa is the most used drug in the world. Due to the low concentration of metabolites in complex samples, new extraction techniques are being studied. The objective of this study was to develop an analytical method by applying the technique of Dispersive Liquid-Liquid MicroextractionSolidification of a Floating Organic Drop (DLLME-SFO) to determine 11-nor -9-carboxyl -Δ 9 -tetrahydrocannabinol (THC-COOH) in human urine sample. In addition, it was established an online procedure for derivatisation of the metabolite in the chromatographic injector. After of the glucuronide alkaline hydrolysis, the analyte was extracted with 1-dodecanol (30 µL) and methanol (200 µL), as extraction and dispersive solvents, respectively, addition of 1 % NaCl and 5 min to extraction time. The best proportion between BSTFA:extract for on line derivatization of the THC-COOH was 2:2, the split was 1:20 and 240 °C for temperature. The extract was analyzed by gas chromatography coupled to tandem mass spectrometry (GC-MS/MS), after definition ...

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Advancements in solvent microextraction: Recent developments and diverse applications in the modern era

Rani,

Nanda,

Narang

et al. 2024

Separation Science Plus

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Solvent microextraction (SME) is designed to selectively isolate desired analytes while minimizing the presence of interfering substances in the extracted sample. There are different approaches from which single‐drop microextraction (SDME) can be amalgamated with various analytical methods to enhance its functionalities and improve the analysis of extracted compounds like gas chromatography, and liquid chromatography amplify sensitivity, selectivity, and the capacity to detect trace amounts of analytes in complex matrices. The review focuses on the intricacies of solid‐phase microextraction and elucidates its operational principles. Additionally, it explores various types of SDMEs, detailing their respective benefits, drawbacks, and potential applications in the future. A typical explanation of the construction and working of hollow fiber‐liquid phase microextraction as well as its types has been discussed. The applications of SMEs in the medical and biomedical fields from food analysis to environmental analysis like analysis and purification of water, organic pollutants, drug analysis, and screening of new drugs have been discussed and also illustrated in tabular form. The pros and cons of both analytical techniques are given in a tabular manner as well a broad comparison between different types of advanced SME techniques provides a new direction for environmental monitoring, food safety, and refining of impurities from water samples. The review provides a comprehensive overview of the current progress, recent obstacles, and future possibilities of SMEs in an appropriate manner. Despite numerous promising advancements, the utilization of SMEs remains a challenging field.

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Simultaneous determination of pesticide multiresidues in white wine and rosé wine by SDME/GC-MS

Cited by 55 publications

References 30 publications

Development and Applications of Quantum Dot-based Molecularly Imprinted Polymer Composites for Optosensing of Carbofuran in Water

Development and Applications of Quantum Dot-based Molecularly Imprinted Polymer Composites for Optosensing of Carbofuran in Water

Aplicação da microextração líquido-líquido dispersiva com solidificação da gota orgânica flutuante para determinação de 11-nor-9-carboxi-Δ9-tetraidrocanabinol em urina humana com derivação on-line no sistema de injeção cromatográfico

Advancements in solvent microextraction: Recent developments and diverse applications in the modern era

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