Pesticide Residues In Plants
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. DETERMINAÇÃO DE MULTIRRESÍDUOS DE AGROTÓXICOS EM MÉIS PRODUZIDOS NA REGIÃO DO TRIÂNGULO MINEIRO POR UHPLC-MS/MS
Excessive use of pesticides can lead to the accumulation of residues in different parts of plants, endangering various species and contaminating foods. Honey can be used as an indicator of agricultural contamination and pre-mature bee mortality by pesticides. However, to quantify pesticide residues in honey, high sensitivity analytical methodologies are requ
Quím. Nova. Publicado em: 2020-03
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2. DESENVOLVIMENTO E VALIDAÇÃO DE MÉTODO PARA DETERMINAÇÃO DE RESÍDUOS DE PESTICIDAS EM PLANTA MEDICINAL DESIDRATADA HYPTIS PECTINATA UTILIZANDO DMFS E CG/EM. / DEVELOPMENT AND VALIDATION OF METHODS FOR DETERMINATION OF PESTICIDE RESIDUES IN DRIED MEDICINAL PLANT HYPTIS PECTINATA DMFS AND USING GC / MS.
The Hyptis pectinata (L.) Poit is a medicinal plant widely used in the Sergipe state for the treatment of skin illnesses, gastric clutter, nasal congestion and inflammation caused for bacteria and fungi. Hyptis pectinata, as well as other medicinal plants, can be contaminated with pesticides that are used in the agriculture, and residues cause damages to the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/02/2011
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3. Formation and biorelease of bound residues of pesticides in two brazilian soils. I. LINDANE.
Soil contamination after pesticide applications in often frequent, and the use of radiolabelled molecules had proved the existence of non extractable or bound residues which remain firmly bound to the soil matrix. The extent of bound residues formation vaaaries according to the applied compound, but it may constitute e significant part of residues remaining
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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4. Formation and biorelease of bound residues of pesticides in two brazilian soils. II. Parathion.
The use of radiolabelled pesticides molecules'in research proved that some of the applied pesticides remain unexractable and become bound into the soil and other matrixes. Since the available methods to identify the nature of bound residues from parathion application were little effective, this study investigated the persistence and biorelease of C- parathio
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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5. Dissipação e monitoramento dos inseticidas clorpirifós e thiamethoxam em tubérculos e solo cultivado com batata (Solanum tuberosum L.) / Dissipation and monitoring of chlorpyrifos and thiamethoxam in potato (Solanum tuberosum L.) tubers and soil
The objectives of this study were to evaluate dissipation of insecticides chlorpyrifos and thiamethoxam in potato plants during development and monitor pesticide residues in tubers grown in southern Minas Gerais and in samples collected from retail markets in Viçosa-MG. First, the solid-liquid extraction at partition at low temperature (SLE-PLT) was optimiz
Publicado em: 2008
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6. Development of an electronic device for attraction drops of the electrostatic spraying in citric plants / Desenvolvimento de sistema eletrônico para pulverização e atração de gotas em plantas cítricas
The technology of application of agricultural defensives in tree like plants and orchard plants in general way, still little is researched in Brazil. Ahead of requirements of the international market, the application technology must take care of some parameters that will give the credibility of the Brazilian products in the exterior market, as for the certif
Publicado em: 2008
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7. DETERMINAÇÃO DE RESÍDUOS DE PESTICIDAS EM PLANTAS DE ARROZ EMPREGANDO QuEChERS MODIFICADO E GC-ECD / DETERMINATION OF PESTICIDE RESIDUES IN RICE PLANTS USING MODIFIED QuEChERS AND GC-ECD
A cultura do arroz é uma atividade de importância cada vez maior pela sua utilização na alimentação humana, garantindo alimento suficiente e de qualidade para a população. A grande preocupação é o uso intensivo de pesticidas; principal estratégia no campo para o combate e a prevenção de pragas, e os resíduos decorrentes desta prática. Neste t
Publicado em: 2008
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8. 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
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9. Performance of tomato cultivars (Lycopersicon esculentum Mill.) organically-grown under greenhouse conditions. / Desempenho de cultivares de tomate (Lycopersicon esculentum Mill.) sob sistemas orgânicos em cultivo protegido.
Organic agriculture in Brazil has increased about 30% over the last few years since consumers are seeking for healthier foods, i.e. nutritious and free of pesticide residues. Among vegetable crops organically-grown, tomato constitutes an attractive economic opportunity for growers. However, the lack of information about management practices and cultivars ada
Publicado em: 2005
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10. Analysis of pesticide residues in Brazilian medicinal plants: matrix solid phase dispersion versus conventional (European Pharmacopoeia) methods
Neste trabalho é proposto um método baseado na dispersão da matriz em fase sólida (MSPD) para a determinação de resíduos de pesticidas organoclorados (OC) e organofosforados (OP) por cromatografia em fase gasosa com detector de captura de elétrons (HRGC-ECD) em folhas de espécies de Passiflora L. (maracujá). Em confronto com os métodos convenciona
J. Braz. Chem. Soc.. Publicado em: 2003-04
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11. Residues of acephate, of its metabolite methamidophos and of chlorothalonil in greenhouse and field tomato crops (lycopersicon esculentum mill). / Resíduos de acefato, de seu metobólito metamidofós e de clorotalonil em cultura protegida de tomate (Lycopersicon esculentum Mill) e de campo.
O desenvolvimento da agricultura, a modernização dos meios da produção agrícola, buscando atender um mercado exigente em produtos de alta qualidade tem aumentado grandemente os cultivos conduzidos em condições de estufa. Tais culturas, demandam o uso de pesticidas para controle de problemas fitossanitários, cujos resíduos, principalmente em hortali�
Publicado em: 2003
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12. Dietary pesticides (99.99% all natural).
The toxicological significance of exposures to synthetic chemicals is examined in the context of exposures to naturally occurring chemicals. We calculate that 99.99% (by weight) of the pesticides in the American diet are chemicals that plants produce to defend themselves. Only 52 natural pesticides have been tested in high-dose animal cancer tests, and about