Dithiocarbamates
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Dithiocarbamate Residues in Fruits and Leaves of Passion Fruit (Passiflora edulis) from Different Brazilian Regions
Dithiocarbamates are widely used fungicides, including in passion fruit, whose fruits are mainly used for juice production, the leaves for the preparation of herbal tea and medicines. Also, the use of the peel in the food industry has been proposed. In this study, the spectrophotometric method for determination of dithiocarbamate residues, as CS2, in passion
J. Braz. Chem. Soc.. Publicado em: 16/09/2019
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2. Occupational exposure to pesticides and hematological alterations: A survey of farm residents in the South of Brazil
Resumo O objetivo deste estudo foi investigar a associação entre a exposição a organoclorados (OC) e agrotóxicos não persistentes e os parâmetros hematológicos em uma população agrícola de Farroupilha-RS. Foi utilizado um questionário para coletar informações sobre fatores sociodemográficos e de estilo de vida, duração, frequência e tipo de
Ciênc. saúde coletiva. Publicado em: 27/06/2019
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3. Comparison Between Three Chromatographic (GC-ECD, GC-PFPD and GC-ITD-MS) Methods and a UV-Vis Spectrophotometric Method for the Determination of Dithiocarbamates in Lettuce
The purpose of this study was to compare the performance of gas chromatographic with electron capture detector, pulsed flame photometric detector and mass spectrometry (GC-ECD, GC-PFPD and GC-MS) and UV-Vis spectrophotometric methods, based on acidic hydrolysis with tin(II) chloride of dithiocarbamate and analysis of the evolved CS2. For the validation studi
J. Braz. Chem. Soc.. Publicado em: 2017-05
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4. Synthesis of Dithiocarbamates by Markovnikov Addition Reaction in PEG and Their Application in Amidoalkylation of Naphthols and Indoles
Synthesis of dithiocarbamates by the one-pot three-component Markovnikov addition reaction of an amine, carbon disulfide and an alkyl vinyl ether or
N -vinylpyrrolidone is reported in polyethylene glycol (PEG) under a mild and green procedure with high yields and completely regiospecific. Also, the products were used as efficient startingJ. Braz. Chem. Soc.. Publicado em: 2015-07
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5. MÉTODOS INDIVIDUAL E MULTIRRESIDUAL PARA DETERMINAÇÃO DE PESTICIDAS EM GRÃOS E DERIVADOS POR GC-PFPD, GC-ITD-MS E LC-MS/MS / SINGLE AND MULTI-RESIDUE METHODS FOR PESTICIDE ANALYSIS IN GRAINS AND DERIVATES BY GC-PFPD, GC-ITD-MS AND LC-MS/MS
Due to the complexity of grains like soybean, corn and rice, and the very low pesticide concentration expected for these samples, it is really necessary to develop efficient and reliable analytical methods to identify and quantify their residues. The possibility to perform the determination of a large number of pesticides in just a single chromatographic ana
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/08/2011
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6. Estudo estrutural e estereoquímico de derivados de ditiocarbamatos: supramolecularidade / Structural and stereochemistry analysis of dithiocarbamate derivates: an influence of the supramolecularity
Ditiocarbamatos (DTC) tem uma vasta gama de aplicação. Na indústria são usados como ativos para vulcanização da borracha; lubrificantes e anticorrosivos para trabalhos em alta pressão. Na medicina são estudados como potenciais inibidores do fator nuclear kappa β (NF-KB) e da protease do HIV-1; além da aplicação como indutores da apoptose em v
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/07/2011
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7. Efeito de soluções de enxágüe na remoção de resíduos de mancozeb em tomates / Effect of rinsing solutions in waste removal of mancozeb in tomatoes
Dentre os agrotóxicos mais utilizados na cultura do tomate estão os fungicidas e, dentre estes, os mais aplicados na cultura são os ditiocarbamatos. O objetivo deste trabalho foi estudar a eficiência da remoção do ditiocarbamato mancozeb em tomates através de processos de enxágüe. Foram realizadas análises de acidez, brix, da atividade de água (aw
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/05/2008
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8. Effect of rinsing solutions in waste removal of mancozeb in tomatoes / Efeito de soluções de enxágüe na remoção de resíduos de mancozeb em tomates
Fungicides are the pesticides mostly used the tomato crop. Among the fungicides the dithiocarbamates are the mostly used. The objective of this work was to study the efficiency of the dithiocarbamate mancozeb removal from tomatoes through processes of washes. We performed analyses of acidity, brix, the activity of water (aw), pH and content of manganese for
Publicado em: 2008
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9. Ditiocarbamatos derivados do glicoluril, ácido úrico, ácido parabânico e hidantoína: compostos de coordenação e uso como inibidores de corrosão do bronze
This thesis work is about dithiocarbamates compounds, their synthesis, study and application as corrosion inhibitors. The dithiocarbamates herein studied were synthesized from four substances: glycoluril, uric acid, parabanic acid and hydantoin. The pro-ligands were synthesized through reaction with CS2 and NaOH, characterized via elemental analysis (CHN) an
Publicado em: 2008
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10. DESENVOLVIMENTO E VALIDAÇÃO DE MÉTODO PARA DETERMINAÇÃO DE ETILENOTIOURÉIA EM URINA EMPREGANDO HPLCUV / DEVELOPMENT AND VALIDATION METHOD FOR THE DETERMINATION OF ETHYLENETHIOUREA IN URINE BY HPLC-UV
In order to supply the world-wilde demand for food, it is essential to use the pesticides to protect the crops against pests and diseases. But the indiscriminate and injudicious use of these compounds have resulted in widespread contamination in food commodities and environment in all fields, increasing, this way, the preoccupation with chemical products use
Publicado em: 2008
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11. Synthesis, characterization and evaluation of the biological activity of metalic complexes with dithiocarbimates / Síntese, caracterização e estudo da atividade biológica de complexos metálicos com ditiocarbimatos
The dithiocarbimates are structurally related to the dithiocarbamates, but are less studied. This work describes the syntheses of zinc(II), platinum(II) and gold(III) complexes with dithiocarbimates anions and their characterization by elemental analyses, conductance measurements, infrared, electronic, and NMR spectroscopies. Some substances were also charac
Publicado em: 2007
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12. Avaliação de resíduos de etilenotiouréia (ETU) em frutas comercializadas na cidade de São Paulo / Evaluation of ethylene thiourea (ETU) in fruits traded in the city of São Paulo.
Ethylene thiourea (ETU) is a toxic substance generated by the degradation and/or biotransformation of ethylenebisdithiocarbamates (EBDC) fungicides. Their residues may be found in plants and in the environment after EBDC s use in agriculture or in animals and humans when exposed to such products. ETU is confirmedly able to induce tumors in rodents thyroids a
Publicado em: 2007