Browsing by Subject "Chemistry, Analytical"
Now showing items 1-20 of 67
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Application of single-drop microextraction coupled with gas chromatography for the determination of multiclass pesticides in vegetables with nitrogen phosphorus and electron capture detection
(2009)In the present work the single-drop microextraction (SDME) technique coupled with GC-NPD and GC-ECD was evaluated for the determination of multi-class pesticides in vegetables. The donor sample solution preparation was ... -
Behaviour of fenitrothion residues in leaves and soil of vineyard after treatment with microencapsulate and emulsified formulations
(2007)The rate of decline of fenitrothion residues was investigated in leaves and soil of vineyard over 2 months after treatment with two different kinds of commercial formulations: emulsifiable concentrate (EC) and microencapsulate ... -
Chemometric study and optimization of extraction parameters in single-drop microextraction for the determination of multiclass pesticide residues in grapes and apples by gas chromatography mass spectrometry
(2009)A simple and rapid single-drop microextraction method coupled with gas chromatography and mass spectrometry (SDME-GC/MS) for the determination of 20 pesticides with different physicochemical properties in grapes and apples ... -
Classification and management issues of Greek lakes under the European Water Framework Directive: a DPSIR approach
(2010)The European Water Framework Directive (WFD) establishes a framework for the protection of water bodies. The aim of the Water Framework Directive (WFD) is to ensure sustainable management of groundwater, freshwater and ... -
Copper Availability in an Acidic and Limed Zeolite-Amended Soil
(2014)In acidic soils, copper (Cu) availability may be high because of Cu impurities of various agricultural additives. This research was aimed at assessing liming and zeolite application as availability reduction methods. In a ... -
Corn tolerance to atrazine and cadmium and sunflower to cadmium in soil and hydroponic culture
(2008)Hydroponic culture is often used for screening plant tolerance or remediation efficacy to environmental pollutants. Field experiments are usually avoided because of soil and groundwater contamination; thus pot experiments ... -
Determinants of Woody Plant Species Richness in Abandoned Olive Grove Ecosystems and Maquis of Central Greece
(2015)The present study aimed to compare the woody plant species richness and cover (%) of five abandoned olive groves and five maquis ecosystems in central Greece and to describe the relationship between woody plant species ... -
Determination of benzoylurea insecticides in apples and pears by solid-phase extraction cleanup and liquid chromatography with UV detection
(1999)A liquid chromatographic (LC) method was developed and statistically validated for simultaneous determination of 5 benzoylurea insecticides (diflubenzuron, triflumuron, teflubenzuron, flufenoxuron, and lufenuron) in apples ... -
Determination of diphenylamine in contaminated air of agricultural buildings using active sampling on solid sorbents
(2012)This paper reports the results of a study carried out with solid sorbents in order to establish the optimum procedure for sampling and determination of diphenylamine (DPA), the most widely used post-harvest chemical in ... -
Determination of Pesticide Residues in Honey by Single-Drop Microextraction and Gas Chromatography
(2011)A novel, simple, and rapid single-drop microextraction (SOME) procedure combined with GC has been developed, validated, and applied for the determination of multiclass pesticide residues in honey samples. The SDME was ... -
Determination of spiroxamine residues in grapes, must, and wine by gas chromatography/ion trap-mass spectrometry
(2005)Analytical methodology was developed and validated for the determination of spiroxamine residues in grapes, must, and wine by gas chromatography/ion trap-mass spectrometry (GC/IT-MS). Two extraction procedures were used: ... -
Determination of xylazine and its metabolites by GC-MS in equine urine for doping analysis
(2004)Xylazine and its main metabolites were detected in equine urine after a single-dose intravenous administration of 0.98 and 1.01 mg/kg body weight xylazine, respectively, in two horses, in order to be used for equine doping ... -
Development and application of GC-MS method for monitoring of long-term exposure to the pesticide cypermethrin
(2014)Cypermethrin (CPMN) is a synthetic pyrethroid used as an insecticide in large-scale commercial agricultural applications as well as for domestic purposes. In the present study a gas chromatography-mass spectrometry (GC-MS) ... -
Development and validation of an HPLC-DAD method for the simultaneous determination of most common rice pesticides in paddy water systems
(2012)Rice crop is mainly cultivated in large river basins which constitute unique ecosystems and their ecological quality is invaluable. However, the high loads of pesticides used in rice cultivation contribute to the contamination ... -
Development of a Simplified Model for Nitrogen Fertilizer Recommendation for Maize, Wheat, and Sunflower in Northern Greece
(2013)In many cases, fertilizer crop recommendations in northern Greece are made based on personal opinions rather than scientific background. This may lead to overfertilization and waste of resources. For sound fertilizer ... -
Development of an egg-white bioassay for monitoring biotin levels in urine and serum
(2007)This article reports on the development of a simple and cost-effective bioassay for the detection of biotin in urine and serum, based on the very selective binding of avidin and biotin. Avidin was allowed to react without ... -
Development of GC-MS/MS method with programmable temperature vaporization large volume injection for monitoring of 17 beta-estradiol and 2-methoxyestradiol in plasma
(2012)Monitoring of estradiol and its metabolites in biological samples is essential for the accurate diagnosis of a number of endocrine diseases. In this study, a sensitive, precise and specific GC-MS/MS method for the ... -
Distribution of heavy metals of agricultural soils of central Greece using the modified BCR sequential extraction method
(2007)The state of heavy metal (Cd, Cu, Ni, Zn, Pb, and Cr) pollution was studied, in 440 texturally different soil profiles in Thessaly, an intensely cultivated region in Central Greece. The study was carried out in 2004 and ... -
Effects of Organic Farming on Winter Plant Composition, Cover and Diversity in Olive Grove Ecosystems in Central Greece
(2013)The present study aimed to assess the effects of organic farming in comparison with conventional on plant composition, plant cover (%), diversity [species richness, Shannon, Simpson, and evenness (Pielou's) indexes] and ... -
Effects of Pea Cultivation as Cover Crop on Nitrogen-Use Efficiency and Nitrogen Uptake by Subsequent Maize and Sunflower Crops in a Sandy Soil in Central Greece
(2013)The long-term positive effects of cropping systems involving rotation with cover crops on soil properties and the environment are well recognized. The present work concerns a 3-year field experiment focusing on two cropping ...