Determination of ethoprop, diazinon, disulfoton and fenthion using dynamic hollow fiber-protected liquid-phase microextraction coupled with gas chromatography–mass spectrometry

Organophosphorus Pesticides Analysis

“…The original research works devoted to OP pesticides analysis applying various chromatographic techniques: gas chromatography-mass spectrometry (Baugros et al, 2008;Chen & Huang, 2006;Cortés-Aguado et al, 2008;Cunha et al, 2009;Filho et al, 2010aFilho et al, , 2010bHassan et al, 2010;Kolberg et al, 2011;Lavagnini et al, 2011;Lesueur et al, 2008aLesueur et al, , 2008bLi et al, 2011b;Libin et al, 2006;López-Feria et al, 2009;Nguyen et al, 2008;Nguyen et al, 2010;Pang et al, 2006;Rodrigues et al, 2010;Silva et al, 2008;Sinha et al, 2006;Toledano et al, 2010;Wang et al, 2007;Wang et al, 2011;Wu et al, 2011;Yang et al, 2011), gas chromatographytandem mass spectrometry (Barco-Bonilla et al, 2010;Camino-Sánchez et al, 2008;Frenich et al, 2006;Fuentes et al, 2008Fuentes et al, , 2009García-Rodríguez et al, 2010;Lee et al, 2008;Qu et al, 2010;Walorczyk, 2008;Walorczyk & Gnusowski, 2009), gas chromatography-ion trap mass spectrometry (González-Rodríguez et al, 2008;Przybylski & Hommet, 2008), gas chromatography time-of-flight mass spectrometry (Hernández et al, 2010;Portolés et al, 2011), high performance liquid chromatography (Akkad et al, 2010;…”

Flow-Injection System with Site-Specific Immobilization of Acetylcholinesterase Biosensor for Amperometric Detection of Organophosphate Pesticides

“…Organophosphorous pesticides (OPs) are highly toxic compounds which are widely used in the agriculture and as chemical warfare agents (8). The OPs are neurotoxins and therefore pose serious risk to human health.…”

“…These compounds may still find their way into our food and water supplies, which necessitates analytical approaches for the reliable detection of pesticides for environmental protection and food safety purposes (10). Analytical methods such as gas chromatography or high-performance liquid chromatography have been widely used for the determination of OPs (8,22,29). These methods are time-consuming, need specialized laboratories and do not measure the toxicological effect of the pesticides.…”

Determination of Triazines by Ultrasonic‐Assisted Ionic Liquid Microextraction Coupled with High Performance Liquid Chromatography

“…SPME is a solvent-free process which includes simultaneous extraction and preconcentration of analytes from aqueous samples, but the extraction fiber is expensive, fragile and has a limited lifetime. Liquid-phase microextraction (LPME) [15][16][17] was performed by using a single drop of solvent or solvent-based hollow fiber, which is an inexpensive method and does not required complex equipment. However, there are some disadvantages for this method: (1) fast stirring speed tends to break up the organic drop; (2) air bubbles are formed; (3) relatively small volume and the evaporation of the drop lead to low sensitivity and poor repeatability.…”