Investigation of the occurrence of pesticide residues in rural wells and surface water following application to tobacco
Edson Campanhola Bortoluzzi,Danilo dos Santos Rheinheimer,Celso S. Gonçalves,J. B. R. Pellegrini,Aline Machado Maroneze,Márcia Helena Scherer Kurz,Nádia M. Bacar,Renato Zanella +7 more
TLDR
In this article, the exposure of well and surface water to pesticides, commonly used for tobacco cropping, was assessed by using a preconcentration step with solid phase extraction (SPE), the selected pesticides were determined by gas chromatography with electron capture detection (GC-ECD) or high performance liquid chromatography for diode array detection (HPLC-DAD).Abstract:
In this work the exposure of wells and surface water to pesticides, commonly used for tobacco cropping, was assessed. Water consumption wells and surface water flows were sampled at different times. After a preconcentration step with solid phase extraction (SPE), the selected pesticides were determined by gas chromatography with electron capture detection (GC-ECD) or high performance liquid chromatography with diode array detection (HPLC-DAD). No pesticides were detected in the well water samples and surface water flow in the winter season. However, in the spring and summer higher concentrations of chlorpyrifos and imidacloprid were found in the water source samples. Atrazine, simazine and clomazone were also found. The occurrence of pesticides in collected water samples was related with the application to tobacco.read more
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Journal ArticleDOI
Assessment of genotoxic and mutagenic effects of chlorpyrifos in freshwater fish Channa punctatus (Bloch) using micronucleus assay and alkaline single-cell gel electrophoresis.
TL;DR: MN and comet assays were indicated to be sensitive and rapid methods to detect mutagenicity and genotoxicity of CPF and other pollutants in fishes and significant effects for both the concentrations and time of exposure were observed in treated fish.
Journal ArticleDOI
Altered hematological and immunological parameters in silver catfish (Rhamdia quelen) following short term exposure to sublethal concentration of glyphosate.
Luiz Carlos Kreutz,Leonardo José Gil Barcellos,Stella de Faria Valle,Tális de Oliveira Silva,Deniz Anziliero,Ezequiel Davi dos Santos,Mateus Pivato,Rafael Zanatta +7 more
TL;DR: Information obtained in this study indicates that glyphosate contaminated water contributes to alter blood cells parameters and to reduce the activity of natural immune components important to mediate fish resistance to infecting microorganisms.
Book ChapterDOI
Adsorption and Desorption of Chlorpyrifos to Soils and Sediments
TL;DR: There appears to be no definitive quantification of chlorpyrifos adsorption or desorption characteristics, which means it is difficult to predict its adsorptive behavior with certainty, without resorting to experimental methods specific to the soil or sediment of interest.
Journal ArticleDOI
Validation of method for determination of different classes of pesticides in aqueous samples by dispersive liquid–liquid microextraction with liquid chromatography–tandem mass spectrometric detection
TL;DR: The comparison of this method with solid-phase extraction indicates that DLLME is a simple, fast, and low-cost method for the determination of pesticides in natural waters.
Journal ArticleDOI
Neonicotinoid insecticides in surface water from the central Yangtze River, China.
TL;DR: Significantly higher concentrations and detection frequencies of NNIs were observed in the summer than in the spring, which may be explained by the heavier precipitation in summer.
References
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Book
Environmental organic chemistry
TL;DR: An Introduction to Environmental Organic Chemicals is given in this article, where the authors present an overview of the main steps in the development of these processes, including the following: Sorption I: General Introduction and Sorption Processes Involving Organic Matter. Sorption II: Partitioning to Living Media - Bioaccumulation and Baseline Toxicity.