Developments in hollow fiber based liquid-phase microextraction: principles and applications

Ghambarian, Mahnaz; Yamini, Yadollah; Esrafili, Ali

doi:10.1007/s00604-012-0773-x

Cited by 167 publications

(103 citation statements)

References 131 publications

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“…In addition, it should have a suitable low viscosity to ensure high diffusion coefficients and should be selective towards the analytes of interest [54]. Based on these considerations, five organic solvents were tested to extract the analytes (1-octanol, n-hexane, ethyl acetate, dihexyl ether and toluene).…”

Section: Selection Of Organic Solventmentioning

confidence: 99%

Application of hollow fiber liquid phase microextraction for simultaneous determination of regulated and emerging iodinated trihalomethanes in drinking water

Domínguez-Tello

Arias-Borrego

García-Barrera

et al. 2015

Journal of Chromatography A

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Section: Selection Of Organic Solventmentioning

confidence: 99%

Application of hollow fiber liquid phase microextraction for simultaneous determination of regulated and emerging iodinated trihalomethanes in drinking water

Domínguez-Tello

Arias-Borrego

García-Barrera

et al. 2015

Journal of Chromatography A

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“…A HF-LPME também é empregada em duas configurações principais, sem que haja necessidade de nenhuma instrumentação específica: a configuração em U, que utiliza duas microsseringas conectadas à fibra (mais empregada), e a configuração tipo haste, que utiliza somente uma microsseringa para injetar e coletar a fase aceptora [48] .…”

Section: Microextração Em Fase Líquida Com Fibras Ocasunclassified

Técnicas de preparo de amostra empregadas na determinação de agrotóxicos carbamatos em água e solo

Morais¹,

Begnini²,

Jardim³

2013

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ResumoAtualmente, dentre os diferentes tipos de agrotóxico aplicados na agricultura, os carbamatos têm se destacado em virtude de sua elevada eficiência, facilidade de síntese e baixo custo. No entanto, o uso desregrado desses agrotóxicos, não seguindo as Boas Práticas Agrícolas (BPA), tem levado à contaminação do meio ambiente, destacando-se o acúmulo desses compostos nas águas superficiais (rios e lagos), subterrâneas e no solo. Além disso, muitos desses agrotóxicos são tóxicos para os seres vivos, principalmente por inibirem a ação de enzimas biológicas, como as colinesterases. Nesse contexto, o monitoramento de resíduos de agrotóxicos no solo e nas águas tornou-se imprescindível para a redução do impacto ambiental e aumento da segurança da saúde humana e animal, sendo realizado através da confirmação e quantificação desses resíduos, empregando-se diferentes técnicas analíticas. As técnicas de preparo de amostra mais empregadas e modernas para determinação analítica de resíduos de agrotóxicos carbamatos serão abordadas neste artigo. Palavras-chavePreparo de amostra; carbamatos; água; solo. Sample preparation techniques for determination of carbamate pesticides in water and soil AbstractCurrently, among the several kinds of pesticides employed in agriculture, carbamates have been widely used because of their high efficiency, ease of synthesis and low cost. However, the unjudicious use of these pesticides, not following Good Agricultural Practices, can have adverse effects on the environment, especially the accumulation of these compounds in surface waters (rivers and lakes), groundwater and soil. Furthermore, many of these pesticides are toxic to humans and animals, mainly due to their inhibition of enzymes, like cholinesterases. In this context, the monitoring of pesticide residues in soils and waters has become essential to reduce the environmental impact and improve the safety of human and animal health, being performed through the confirmation and quantification of these residues, employing different analytical techniques. The most frequently used techniques and modern sample preparation for analytical determination of carbamate pesticide residues will be discussed in this paper.

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“…The traditional sample pretreatment methods, such as liquid-liquid extraction (LLE) and solid-phase extraction (SPE), required high quantities of organic solvents and were time consuming and laborious in nature. Subsequently, various microextraction methods were developed to overcome these disadvantages to a certain extent [5][6][7][8][9][10][11][12]. Arthur and Pawliszyn [5] first reported solid-phase microextraction (SPME) as a simple, rapid, and solventless process for sample preparation.…”

Section: Introductionmentioning

confidence: 99%

A novel fatty-acid-based in-tube dispersive liquid–liquid microextraction technique for the rapid determination of nonylphenol and 4-tert-octylphenol in aqueous samples using high-performance liquid chromatography–ultraviolet detection

Shih

Shu

Ponnusamy

et al. 2015

Analytica Chimica Acta

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Developments in hollow fiber based liquid-phase microextraction: principles and applications

Abstract: Hollow fiber liquid-phase microextraction (HF-LPME) offers an efficient alternative to classical techniques for sample preparation and preconcentration. Features include high selectivity, good enrichment factors, and improved possibilities for automation. HP-LPME relies on

Cited by 167 publications

References 131 publications

Application of hollow fiber liquid phase microextraction for simultaneous determination of regulated and emerging iodinated trihalomethanes in drinking water

Application of hollow fiber liquid phase microextraction for simultaneous determination of regulated and emerging iodinated trihalomethanes in drinking water

Técnicas de preparo de amostra empregadas na determinação de agrotóxicos carbamatos em água e solo

A novel fatty-acid-based in-tube dispersive liquid–liquid microextraction technique for the rapid determination of nonylphenol and 4-tert-octylphenol in aqueous samples using high-performance liquid chromatography–ultraviolet detection

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