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Inventário de agrotóxicos e risco de contaminação química dos recursos hídricos no semiárido cearense
The first diagnosis of risk of environmental contamination was conducted for an area of intense agricultural activity in the semiarid cearense (Baixo Jaguaribe and Litoral de Aracati area). WeExpand
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Pesticides are used mostly in rural areas for agriculture, but urban pest control, public health campaigns, and household and veterinary products can also be important sources of these contaminants.Expand
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Influence of sediment parameters on the distribution and fate of PAHs in an estuarine tropical region located in the Brazilian semi-arid (Jaguaribe River, Ceará coast).
18 polycyclic aromatic hydrocarbons (PAHs) were evaluated in the Jaguaribe River to explore the influence of grain size, organic carbon, humic and fulvic acids and black carbon on their adsorptionExpand
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Oil spill in South Atlantic (Brazil): Environmental and governmental disaster
Abstract In early September 2019, dense crude oil began to wash the beaches of Brazil's tropical coast. Four months after the first report, the oil has already been found along >3000 km of theExpand
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Application of instrumental neutron activation analysis and inductively coupled plasma-mass spectrometry to studying the river pollution in the State of Minas Gerais
Instrumental neutron activation analysis (INAA) and inductively coupled plasma-mass spectrometry (ICP-MS) have been used for the determination of toxic heavy metals and other pollutants in the waterExpand
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Study of water and sediment interactions in the Das Velhas River, Brazil : Major and trace elements
Surface adsorption of metallic elements in aqueous solution by colloidal hydroxides affects the transport of elements in surfac e water systems. The study of the adsorption ability and the chemistryExpand
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Comparison of Neutron Activation Analysis and ICP-MS used for river water pollution control
This paper compares the performance and limitations of two analytical methods for samples from the environment: Instrumental Neutron Activation Analysis (INAA) and Inductively Coupled Plasma withExpand
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Removal of Ni2+, Cu2+, Zn2+, Cd2+ and Pb2+ ions from aqueous solutions using cashew peduncle bagasse as an eco-friendly biosorbent
AbstractIn this study, the adsorption efficiency of cashew peduncle bagasse (CPB) is reported for the removal of single-(mono-) and multi-metal ions (Cd2+; Cu2+; Ni2+; Pb2+; and Zn2+) from syntheticExpand
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Morphology and Morphometry of the Midgut in the Stingless Bee Friesella schrottkyi (Hymenoptera: Apidae)
Friesella schrottkyi is a small stingless bee (3-mm long) important for agricultural and native forest pollination. This study describes the morphology and morphometry of the midgut in F. schrottkyiExpand
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Hydrodynamic characterisation of an airlift reactor with an enlarged degassing zone, in the presence of non-Newtonian fluids
Part of the success is, surely, due to its peculiar characteristics, namely the approximately constant and low shear that it generates in the medium (being, therefore, ideal for those cultures lessExpand