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排序方式: 共有102条查询结果,搜索用时 15 毫秒
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Abamectin is used as an acaricide and insecticide for fruits, vegetables and ornamental plants, as well as a parasiticide for animals. One of the major problems of applying pesticides to crops is the likelihood of contaminating aquatic ecosystems by drift or runoff. Therefore, toxicity tests in the laboratory are important tools to predict the effects of chemical substances in aquatic ecosystems. The aim of this study was to assess the potential hazards of abamectin to the freshwater biota and consequently the possible losses of ecological services in contaminated water bodies. For this purpose, we identified the toxicity of abamectin on daphnids, insects and fish. Abamectin was highly toxic, with an EC50 48 h for Daphnia similis of 5.1 ng L−1, LC50 96 h for Chironomus xanthus of 2.67 μg L−1 and LC50 48 h for Danio rerio of 33 μg L−1. 相似文献
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Tânia Vieira Madureira Susana Velhote Cláudia Santos Catarina Cruzeiro Eduardo Rocha Maria João Rocha 《Environmental science and pollution research international》2014,21(9):6089-6098
A new and fully validated QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) extraction and gas chromatography–tandem mass spectrometry methodology was developed and subsequently implemented for the quantification of 16 polycyclic aromatic hydrocarbons (PAHs) in wild (from Matosinhos Beach, Portugal) and commercial (from Ria de Arousa, Spain) mussels. The method proved to be robust, precise, and accurate, with recoveries ranging from 89.2 to 111.8 %. Total sums of 16 PAHs were 52.91 and 37.58 ng/g of wet weight for wild and commercial specimens, respectively. The three- to four-ring PAHs were the most abundant, and a mixture of petrogenic and pyrolytic sources were suspected to occur in both origin areas. Although the contamination levels were below the European regulated limits, specifically for commercial mussels (this despite wild specimens are also consumed), care should be taken in terms of human health, since we are still not aware of the low-dose versus long-term effects, even more in high-risk population groups. 相似文献
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Judite Vieira André Fonseca Vítor J. P. Vilar Rui A. R. Boaventura Cidália M. S. Botelho 《Environmental science and pollution research international》2013,20(1):508-524
The aim of the study was to predict the impact of flow conditions, discharges and tributaries on the water quality of Lis River using QUAL2Kw model. Calibration of the model was performed, based on data obtained in field surveys carried out in July 2004 and November 2006. Generally the model fitted quite well the experimental data. The results indicated a decrease of water quality in the downstream area of Lis River, after the confluence of Lena, Milagres and Amor tributaries, as a result of discharges of wastewaters containing degradable organics, nutrients and pathogenic organisms from cattle-raising wastewaters, domestic effluents and agricultural runoff. The water quality criteria were exceeded in these areas for dissolved oxygen, biochemical oxygen demand, total nitrogen and faecal coliforms. Water quality modelling in different scenarios showed that the impact of tributaries on the quality of Lis River water was quite negligible and mainly depends on discharges, which are responsible by an increase of almost 45, 13 and 44 % of ultimate carbonaceous biochemical oxygen demand (CBODu), ammonium nitrogen and faecal coliforms, for winter simulation, and 23, 33 and 36 % for summer simulation, respectively, when compared to the real case scenario. 相似文献
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Ana Luiza Machado Terra Roberta da Costa Kosinski Juliana Botelho Moreira Jorge Alberto Vieira Costa 《Journal of environmental science and health. Part. B》2013,48(8):709-716
The occurrence of diseases in cultivars has caused significant losses in global food production. The advancement of nanobiotechnology makes it possible to obtain new products to be used in the control of pathogens in cultivars. Silver nanoparticles can be synthesized by microalgae and are widely known for their antimicrobial activity. In addition, the biomass produced in microalgal culture for the biosynthesis of the nanoparticles also demonstrates antimicrobial properties, as it can increase the antibacterial and antifungal potential of the silver nanoparticles. In this context, this article addresses the use of microalgae to biosynthesize silver nanoparticles simultaneously with biomass production. In addition, we demonstrate the antimicrobial potential of these nanomaterials, as well as of the microalgal biomass produced in biosynthesis, to use in the control of pathogens in agriculture. 相似文献
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Diório Alexandre Díaz-Angulo Jennyfer Castellanos Reynel M. Gomes Ana I. Bergamasco Rosângela Vieira Marcelo Fernandes Dezotti Márcia Mueses Miguel Angel Machuca-Martinez Fiderman Vilar Vítor J. P. 《Environmental science and pollution research international》2022,29(28):42120-42129
Environmental Science and Pollution Research - This work aims to integrate several hydrogen peroxide (H2O2) activation mechanisms, photolysis (UVC irradiation), chemical electron transfer (TiO2-P25... 相似文献
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Lima Fernando Santos Scalize Paulo Sérgio Gabriel Ellen Flávia Moreira Gomes Raylane Pereira Gama Aline Rodrigues Demoliner Meriane Spilki Fernando Rosado Vieira José Daniel Gonçalves Carneiro Lilian Carla 《Food and environmental virology》2022,14(1):77-88
Food and Environmental Virology - Rural environments lack basic sanitation services. Facilities for obtaining water and disposing sewage are often under the initiative of each resident, who may not... 相似文献
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Morin-Crini Nadia Lichtfouse Eric Fourmentin Marc Ribeiro Ana Rita Lado Noutsopoulos Constantinos Mapelli Francesca Fenyvesi Éva Vieira Melissa Gurgel Adeodato Picos-Corrales Lorenzo A. Moreno-Piraján Juan Carlos Giraldo Liliana Sohajda Tamás Huq Mohammad Mahmudul Soltan Jafar Torri Giangiacomo Magureanu Monica Bradu Corina Crini Grégorio 《Environmental Chemistry Letters》2022,20(2):1333-1375
Environmental Chemistry Letters - The rise of emerging contaminants in waters challenges the scientific community and water treatment stakeholders to design remediation techniques that are simple,... 相似文献