Results 31 to 40 of about 634,784 (262)
Química Nova, 2011 The determination of pesticide residues in water samples by Liquid Chromatography require sample preparation for extraction and enrichment of the analytes with the minimization of interferences to achieve adequate detection limits.
Sergiane Souza Caldas +5 more
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Determination of pesticides in fruit and fruit juices by chromatographic methods. An overview [PDF]
, 2011 In order to combat a variety of pests, pesticides are widely used in fruits. Several extraction procedures (liquid extraction, single drop microextraction, microwave-assisted extraction, pressurized liquid extraction, supercritical fluid extraction ...
Delerue-Matos, Cristina +3 more
core +1 more source
Recent Advances in Applications of Ionic Liquids in Miniaturized Microextraction Techniques
Molecules, 2018 Green sample preparation is one of the most challenging aspects in green analytical chemistry. In this framework, miniaturized microextraction techniques have been developed and are widely performed due to their numerous positive features such as ...
Maria Kissoudi, Victoria Samanidou
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Determination of pesticides in the respirable fraction of airborne particulate matter by high-performance liquid chromatography–tandem mass spectrometry [PDF]
, 2017 Potential harmful effects of pesticides include risks to human health of workers involved in the wet spray application in cultivated areas. Inhalation exposure depends on several factors including pesticide concentrations in the respirable fraction of ...
Buiarelli, Francesca +7 more
core +1 more source
Molecules, 2014 Solvent extraction remains one of the fundamental sample preparation techniques in the analysis of environmental solid samples, but organic solvents are toxic and environmentally harmful, therefore one of the possible greening directions is its ...
Helena Prosen
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An easily prepared graphene oxide-ionic liquid hybrid nanomaterial for micro-solid phase extraction and preconcentration of Hg in water samples [PDF]
, 2018 A preconcentration method based on the use of graphene oxide (GO) functionalized with an ionic liquid (IL) was developed for trace Hg determination in water samples.
Cruz Sotolongo, Annaly +2 more
core +1 more source
Solid-phase microextraction for bioconcentration studies according to OECD TG 305 [PDF]
, 2012 An important aim of the European Community Regulation on chemicals and their safe use is the identification of (very) persistent, (very) bioaccumulative, and toxic substances.
Böhm, Leonard +2 more
core +2 more sources
Advances in Sample PreparationThe widespread use of pesticides has led to their pervasive presence in diverse environmental matrices such as water, air, and soil. Therefore, accurate and reliable determination of pesticides in various sample types is essential.
Seyedeh Bentolhoda Hosseinian +2 more
doaj +1 more source
Developments in liquid-phase microextraction
TrAC Trends in Analytical Chemistry, 2003 Abstract The development of faster, simpler, inexpensive and more environmentally friendly sample-preparation techniques is an important issue in chemical analysis. Recent research trends involve miniaturisation of the traditional liquid-liquid extraction (LLE) principle by greatly reducing the acceptor-to-donor phase ratio.
E Psillakis (), N Kalogerakis()
openaire +2 more sources
Liquid phase microextraction techniques combined with chromatography analysis: a review
Acta Chromatographica, 2020 Sample pretreatment is the first and the most important step of an analytical procedure. In routine analysis, liquid–liquid microextraction (LLE) is the most widely used sample pre-treatment technique, whose goal is to isolate the target analytes ...
S. Dugheri +8 more
semanticscholar +1 more source