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| Registros recuperados: 154 | |
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| SCORZA JUNIOR, R. P.; LANA, J. T. de O.; SILVA, G. B. S. da; LOEBMANN, D. G. dos S. W.; ALMEIDA, E. G. de. |
| Estudos de monitoramento dos resíduos de agrotóxicos em ? águas superficiais são necessários para avaliar os níveis de exposição de organismos não alvos, incluindo os seres humanos. Este trabalho teve como objetivo monitorar resíduos de 46 diferentes agrotóxicos e seus produtos de degradação em amostras de água do Rio Dourados, Mato Grosso do Sul. Amostras foram coletadas mensalmente ou quinzenalmente, em três pontos de amostragem, durante o período de dezembro de 2019 a dezembro de 2020. Para análise, utilizou-se um método multirresíduo, com extração em fase sólida (SPE) e separação e identificação com cromatografia líquida de ultraperformance acoplada à espectrometria de massas (UPLC-MS-MS). Os limites de quantificação (LQ) para os diferentes agrotóxicos... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Contaminação; Meio Ambiente Aquático; Águas Pluviais; Águas Superficiais; Pesticida; Recurso Hídrico; Aquatic environment; Pesticides; Water pollution; River water. |
| Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1130741 |
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| Marchesan,Enio; Zanella,Renato; Avila,Luis Antonio de; Camargo,Edinalvo Rabaioli; Machado,Sérgio Luiz de Oliveira; Macedo,Vera Regina Mussoi. |
| Irrigated rice production can involve environmental contamination with pesticides due to the proximity of the fields to rivers and to management problems. During three years (2000 to 2003) the rice herbicides clomazone, propanil and quinclorac were quantified in water during the rice growing season, in the Vacacaí and Vacacaí-Mirim Rivers, located in Rio Grande do Sul (RS) State, Brazil. Water samples were taken at several locations in each river, selected by their importance in terms of rice drainage area. The samples were analyzed by HPLC-UV. At least one herbicide was detected in 41% of the samples from the Vacacaí River and 33% from the Vacacaí-Mirim River. The most frequent herbicide in both rivers and in each year was clomazone. The amount of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clomazone; Environmental impact; Pesticides; Propanil; Quinclorac. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000200005 |
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| SILVA, P. T. de S. e; MEDEIROS, L. R. de A.; CUNHA, T. J. F.; COSTA, N. D.; SALVIANO, A. M.. |
| Com este trabalho, avaliou-se o risco de contaminação de águas superficiais e subterrâneas pelo uso de agrotóxicos aplicados em plantios de cebola dos munícipios de Casa Nova e Sento Sé, Bahia. Foram empregados o método de GOSS, para a avaliação das águas superficiais, e o índice GUS, para águas subterrâneas. Verificou-se o uso de 34 princípios ativos no cultivo de cebola nesses municípios. Destes, 62,9% foram classificados de extremamente a altamente tóxicos e mais de 70% classificados como muito perigosos para o meio ambiente. Dos agrotóxicos empregados, cerca de 80% apresentam de médio a alto potencial de contaminação, quando dissolvido em água. Quanto à água subterrânea, a maioria dos compostos apresenta baixa suscetibilidade à lixiviação, ficando... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Entorno do Lago de Sobradinho; Recursos hídricos; Contaminação ambiental; Índice GUS; Método de GOSS; Cebola; Agrotóxico; Resíduo Quimico; Lago Artificial; Água; Hortaliça de Bulbo; Allium Cepa; Pesticida; Onions; Pesticides. |
| Ano: 2019 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1113099 |
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| Quintero,Juan C; Moreira,María T; Feijoo,Gumersindo; Lema,Juan M. |
| White-rot fungi have demonstrated a high capacity to degrade organic pollutants, including the insecticide lindane (y-HCH). The purpose of this study was to evalúate the degradative capacities of several white rot fungi species, Bjerkandera adusta, Irpex lacteus, Lentinus tigrinus, Phanerochaete chrysosporium, Phanerochaete sórdida, Phlebia radiata, Pleurotus eryngii, Poliporus cialatus, and Stereum hirsutum. Fungal tolerance to various concentrations of a-, (3-, y- and 8 isomers of hexachlorocyclohexane (HCH) was studied in both liquid and soil media samples. 8- and y-HCH isomers showed the highest inhibition of fungal growth of all HCH isomers. P. chrysosporium and B. adusta exhibited a high tolerance to HCH pollution. The 8- and y-HCH isomers were... |
| Tipo: Journal article |
Palavras-chave: Hexachlorocyclohexane; Degradation; Pesticides; Bjerkandera adusta; White rot fungi. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202008000200005 |
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| Bancon-montigny, Chrystelle; Gonzalez, Catherine; Delpoux, Sophie; Avenzac, Muriel; Spinelli, Sylvie; Mhadhbi, Takoua; Mejri, Kaouther; Hlaili, Asma Sakka; Pringault, Olivier. |
| The potential of remobilization of pollutants is a major problem for anthropogenic ecosystems, because even when the anthropogenic source of pollution is identified and removed, pollutants stored in sediments can be released into the water column and impact pelagic communities during sediment resuspension provoked by dredging, storms or bottom trawling. The objectives of the present study were to assess the changes observed in the chemical composition of the water column following resuspension of a polluted marine sediment and the consequences for the chemical composition of adjacent marine waters according to season. For that purpose, an experimental sediment resuspension protocol was performed on four distinct occasions, spring, summer, fall and winter,... |
| Tipo: Text |
Palavras-chave: Lagoon; Offshore; Trace metal elements; Pesticides; PAHs; Enrichment factor; Elutriate. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00505/61620/65644.pdf |
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| Pratissoli,Dirceu; Milanez,André M.; Barbosa,Wagner F.; Celestino,Flávio N.; Andrade,Gilberto S.; Polanczyk,Ricardo A.. |
| Trichogramma spp. (Hymenoptera: Trichogrammatidae) can control Diaphania hyalinata Linnaeus (Lepidoptera: Pyralidae). On the other hand, pesticides may reduce the efficiency of natural enemies. The objective was to evaluate the side-effects of fungicides used in the production of cucurbitaceous crops on Trichogramma atopovirilia Oatman & Platner parasitizing D. hyalinata eggs. The fungicides used in bioassays were: azoxystrobin (0.08 g active ingredient [ai] L-1), chlorothalonil (2.00 g ai L-1), mancozeb (1.60 g ai L-1), tebuconazole (0.25 g ai L-1) and thiophanate-methyl (0.49 g ai L-1). Cardboards with 30 D. hyalinata eggs previously immersedin fungicide solutions and distilled water (control) were offered separately to 20 newly emerged T.... |
| Tipo: Journal article |
Palavras-chave: Cucurbit borer; Pesticides; Egg parasitoid; Selectivity. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200016 |
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| Fauvelle, Vincent; Belles, Angel; Budzinski, Helene; Mazzella, Nicolas; Plus, Martin. |
| The work presented here aims at comparing monitoring of S-metolachlor, the major pesticide in use in the Arcachon Bay (South West of France, transitional coastal area), by chemical analysis (monthly passive sampling) and contaminant dissipation modeling from sources (Mars-2D model). The global strategy consisted in i) identifying the major sources of S-metolachlor to the Bay, ii) monitoring these sources for 12 months, and iii) comparing modeled data in the Bay based on measured inputs, to chemical measurements made inside the Bay along with the 12-month source monitoring. Results first showed that the major S-metolachlor surface inputs to the Arcachon Bay are mainly from one single source. Modeled and measured data were in good agreement at 5 sites in the... |
| Tipo: Text |
Palavras-chave: Passive sampling; POCIS; Mars-2D; Contaminant; Monitoring; Coastal area; Pesticides; S-metolachlor. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00445/55627/57334.pdf |
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| Klein, Ricardo Pablo; Somavilla, Alexandre; Köhler, Andreas; Cademartori, Cristina Vargas; Forneck, Eduardo Dias. |
| Wasps, important agents for the control of insect population, have been scantily studied in the Brazilian State of Rio Grande do Sul. Current study investigates monthly variations of social wasps in microhabitats within a forest-agriculture mosaic. Samples were collected between February 2013 and February 2014, through active search and baited traps made from 2 L transparent PET bottles, in five microhabitats, namely, forest, monoculture, polyculture and the edges between the forest fragment and monoculture and polyculture, in the municipality of Doutor Maurício Cardoso. Statistical tests, similarity indices, dominance and constancy as well as PCoA were used for data analysis to group the collection. A total of 953 specimens were collected, distributed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.05.02.00-1 forest fragment; Landscape; Northwest; Pesticides; Polyculture; Seasons.. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27853 |
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| Loro,Vania Lucia; Murussi,Camila; Menezes,Charlene; Leitemperger,Jossiele; Severo,Eduardo; Guerra,Luciana; Costa,Maiara; Perazzo,Giselle Xavier; Zanella,Renato. |
| Due to intense agricultural activity in the rio Uruguai (South Brazil), there is the potential for aquatic contamination by agrochemicals. In this region, there are many reservoirs to meet the water demand for rice fields, forming lentic environments. In line with this information, the aim of this study was to show a comparative analysis of some biomarkers, such as lipid peroxidation (TBARS), gluthatione S-transferase (GST), non-protein thiols (NPSH), amino acids (AA) and piscine micronucleus tests (MNE) in Astyanax jacuhiensis from lentic and lotic environments in the middle rio Uruguai region, comparing warm and cold seasons. Eight pesticides were found in water samples, with propoxur having the highest concentration found in both environments and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomonitoring; Lotic and lentic environments; Pampa; Pesticides. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300569 |
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| Matos,A.T.; Pinho,A.P.; Costa,L.M.; Morris,L.A.. |
| Plot-scale overland flow experiments were conducted to evaluate the efficiency of streamside management zones (SMZs) in retaining herbicides in runoff generated from silvicultural activities. Herbicide retention was evaluated for five different slopes (2, 5, 10, 15, and 20%), two cover conditions (undisturbed O horizon and raked surface), and two periods under contrasting soil moisture conditions (summer dry and winter wet season) and correlated to O horizon and site conditions. Picloram (highly soluble in water) and atrazine (moderately sorbed into soil particles) at concentrations in the range of 55 and 35 µg L-1 and kaolin clay (approximately 5 g L-1) were mixed with 13.000 liters of water and dispersed over the top of 5 x 10 m forested plots. Surface... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pollution control; Silviculture; Pesticides; Runoff. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582008000100014 |
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| Gonçalves,Macks W.; Gambale,Priscilla G.; Godoy,Fernanda R.; Alves,Alessandro Arruda; Rezende,Pedro H. de Almeida; Cruz,Aparecido D. da; Maciel,Natan M.; Nomura,Fausto; Bastos,Rogério P.; Marco-Jr,Paulo de; Silva,Daniela de M.. |
| ABSTRACT Amphibians inhabiting agricultural areas are constantly exposed to large amounts of chemicals, which reach the aquatic environment during the rainy season through runoff, drainage, and leaching. We performed a comet assay on the erythrocytes of tadpoles found in the surroundings of agricultural fields (soybean and corn crops), where there is an intense release of several kinds of pesticides in different quantities. We aimed to detect differences in the genotoxic parameters between populations collected from soybeans and cornfields, and between them and tadpoles sampled from non-agricultural areas (control group). Tadpoles collected from ponds located at soybean fields had significantly more DNA damage, followed by tadpoles collected from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amphibians; Bioindicators; Exposure; Genotoxicity; Pesticides. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100316 |
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| Madadi, O.V; Wandiga, S. O; Jumba, I. O.. |
| The use of most organochlorine pesticides has been banned or restricted in the republic of Kenya under the Rotterdam and Stockholm convention due to high levels of persistence in the environment and toxicity to nontarget organisms. Studies conducted in some parts of the country have revealed that residue levels of these compounds are still in the environment. However, the residues of these compounds have not been exhaustively studied in the Lake Victoria catchment area. This study was set to investigate the residues levels of p,p-DDT, o,p’- DDE, p,p-DDD, g-HCH, D-HCH, a-HCH, Aldrin, and Dieldrin, in water samples from Lake Victoria catchment. Samples were collected during the short rain, dry and wet seasons and analysed using gas chromatography equipped... |
| Tipo: Proceedings Paper |
Palavras-chave: Pollutants; Catchment area; Pesticides; Chemical pollutants; Toxicity; Freshwater lakes; Pollution effects; Environmental impact; Inland water environment; Pollutant persistence. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1475 |
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| Stachowski-haberkorn, Sabine; Guesdon, Stephane; Bechemin, Christian; Chiffoleau, Jean-francois; Brach-papa, Christophe; Soudant, Philippe; Beker, Beatriz; Jadas-hécart, Alain. |
| TOPHYPAC is a field study that was conducted in the Charente river estuary (Marennes-Oléron bay). The main goal was to assess the possible impact of chemical contamination with copper and pesticides on phytoplankton communities. Physical, chemical (nutrients, metals and pesticides) and biological (phytoplankton community) parameters were monitored in the field during three years, from 2011 to 2014. In 2012 and 2013, field sampling was coupled with experimental exposure of phytoplankton communities to copper and to an herbicide cocktail, after transportation to the lab: the effects were assessed using photosynthesis endpoint and cellular densities. TOPHYPAC allowed to set the framework of Charente estuary contamination with pesticides: herbicides glyphosate... |
| Tipo: Text |
Palavras-chave: Continuum eau douce/eau côtière; Pesticides; Métaux; Communautés phytoplanctoniques; Efficacité de photosynthèse; PICT; Tolérance; Cytométrie en flux; Toxicité chronique; Freshwater/coastal water continuum; Pesticides; Metals; Phytoplankton communities; Photosynthesis efficiency; PICT; Tolerance; Flow cytometry; Chronic toxicity. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00300/41115/40289.pdf |
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| Luna Cruz, Alfonso. |
| Bactericera cockerelli es una de las plagas más importantes en solanáceas en México. Su manejo se basa en el uso de insecticidas y recientemente se ha explorado el uso del parasitoide Tamarixia triozae dentro de un programa de MIP. El objetivo del presente trabajo fue explorar la compatibilidad de insecticidas con este parasitoide. En este trabajo se evaluó, en condiciones de laboratorio (25±2ºC, 60±5% H.R.), la toxicidad de Azadiractina, Spinosad, Imidacloprid y Abamectina sobre T. triozae y B. cockerelli. Los cuatro insecticidas resultaron tóxicos tanto para el psílido como para el parasitoide, aunque el grado de toxicidad dependió de la especie, insecticida, estado biológico específico, dosis y forma en que los insectos se expusieron a los productos. De... |
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Palavras-chave: Psyllidae; Plaguicidas; Control biológico; Manejo integrado; Pesticides; Biological control; Pest management; Entomología y Acarología; Maestría. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/119 |
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| Registros recuperados: 154 | |
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