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All publications of “Caroline Miranda Biondi”

10 results

Assessing the Content of Micronutrients in Soils and Sugarcane in Different Pedogeological Contexts of Northeastern Brazil

Rita de Cássia Ferreira da Silva ORCID logo , Fernando Bruno Vieira da Silva ORCID logo , Caroline Miranda Biondi ORCID logo , Clístenes Williams Araújo do Nascimento ORCID logo , Emídio Cantídio Almeida de Oliveira ORCID logo

25/Jul/2019

ABSTRACT Micronutrient research for sugarcane in northeastern Brazil is scarce and most works on this issue date back to the 70’s and 80’s. The objectives of this study were to assess the available and reserve pools of Fe, Mn, Cu, and Zn in soils cultivated with sugarcane under three geological contexts in northeastern Brazil as well as to diagnose the micronutrient nutritional status of sugarcane grown on these areas in order to identify pedogeological conditions in which micronutrient deficiencies are […]

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Rare Earth Element Concentrations in Brazilian Benchmark Soils

Ygor Jacques Agra Bezerra da Silva, Clístenes Williams Araújo do Nascimento, Yuri Jacques Agra Bezerra da Silva, Caroline Miranda Biondi, Cinthia Maria Cordeiro Atanázio Cruz Silva

08/Dec/2016

ABSTRACT: Studies regarding background concentrations of rare earth elements (REEs) are scarce and have mainly focused on a limited number of soil types from the northern hemisphere. The aim of this study was to determine REE concentrations in thirty-five benchmark soils of Brazil. Composite soil samples were taken from areas under native vegetation or with minimal anthropogenic influence. Concentrations of La, Ce, Pr, Nd, Sm, Eu, Gd, Yb, Lu, Dy, Er, Ho, Tb, Tm, Y, Sc, and Fe were determined […]

Background and Reference Values of Metals in Soils from Paraíba State, Brazil

Agenor Bezerra de Almeida, Clístenes Williams Araújo do Nascimento, Caroline Miranda Biondi, Adailson Pereira de Souza, Felipe Martins do Rêgo Barros

13/Apr/2016

ABSTRACT Soil contamination by heavy metals threatens ecosystems and human health. Environmental monitoring bodies need reference values for these contaminants to assess the impacts of anthropogenic activities on soil contamination. Quality reference values (QRVs) reflect the natural concentrations of heavy metals in soils without anthropic interference and must be regionally established. The aim of this study was to determine the natural concentrations and quality reference values for the metals Ag, Ba, Cd, Co, Cu, Cr, Mo, Ni, Pb, Sb and […]

Quality reference values for heavy metals in soils of Rio Grande do Norte, Brazil

Welka Preston, Clistenes Williams Araújo do Nascimento, Caroline Miranda Biondi, Valdomiro Severino de Souza Junior, William Ramos da Silva, Hailson Alves Ferreira

01/Jun/2014

Industrial development and population growth have increased heavy metal concentrations in soils and impacted soil quality. In this scenario, environmental protection agencies have been concerned with establishing heavy metal quality reference values (QRV) that may identify contaminated sites. The study was carried out to provide soil reference values for the metals Ag, Ba, Cd, Co, Cr, Cu, Ni, Pb, Sb, V, and Zn in soils of the State of Rio Grande do Norte according to Brazilian legislation. The study analyzed […]

Comparison of digestion methods to determine heavy metals in fertilizers

Ygor Jacques Agra Bezerra da Silva, Clístenes Williams Araújo do Nascimento, Caroline Miranda Biondi, Welka Preston

01/Apr/2014

The lack of a standard method to regulate heavy metal determination in Brazilian fertilizers and the subsequent use of several digestion methods have produced variations in the results, hampering interpretation. Thus, the aim of this study was to compare the effectiveness of three digestion methods for determination of metals such as Cd, Ni, Pb, and Cr in fertilizers. Samples of 45 fertilizers marketed in northeastern Brazil were used. A fertilizer sample with heavy metal contents certified by the US National […]

Heavy metals in soils and plants in mango orchards in Petrolina, Pernambuco, Brazil

João Paulo Siqueira da Silva, Clístenes Williams Araújo do Nascimento, Caroline Miranda Biondi, Karina Patrícia Vieira da Cunha

01/Aug/2012

The monitoring of heavy metal concentrations in areas under intensive agriculture is essential for the agricultural sustainability and food safety. This paper evaluates the total contents of heavy metals in soils and mango trees in orchards of different ages (6, 7, 8, 9, 10, 11, 14, 16, 17, 19, and 26 years) in Petrolina, Pernambuco, Brazil. Soil samples were taken from the layers 0-20 cm and 20-40 cm, and mango leaves were collected in the growth stage. Areas of native […]

Potential of fertilizers and lime as micronutrient suppliers to soil

Vinícius Gedeão Bezerra de Carvalho, Clístenes Williams Araújo do Nascimento, Caroline Miranda Biondi

01/Jun/2012

Fertilizers and lime can carry several micronutrients as residual impurities, which can become a source of these elements for crops. This study quantified the concentrations of Zn, Cu, Fe, Mn, and Ni in fertilizers and lime sold in northeastern Brazil. The effect of these inputs on the indirect micronutrient supply to crops was evaluated. Extracts were obtained from 24 fertilizer and 26 lime samples, using the method 3051A (USEPA) and atomic absorption spectrophotometry for elemental analysis. A fertilizer sample (SRM […]

Natural concentrations of barium in benchmark soils of Pernambuco, Brazil

Caroline Miranda Biondi, Clístenes Williams Araújo do Nascimento, Adelazil de Brito Fabricio Neta

01/Oct/2011

Barium is an alkaline-earth metal that occurs naturally in soils. It is present in soil in carbonates, sulphates and silicates as well as in the isomorphic substitution of calcium and magnesium in clay minerals. When available at high soil concentrations, Ba is toxic to several living organisms. To rule out the possibility of metal contamination of a particular soil, the natural metal concentrations of this soil must be known. Therefore, the natural soil concentrations of metals must be determined for […]

Concentrations of Fe, Mn, Zn, Cu, Ni and Co in benchmark soils of Pernambuco, Brazil

Caroline Miranda Biondi, Clístenes Williams Araújo do Nascimento, Adelazil de Brito Fabricio Neta, Mateus Rosas Ribeiro

01/Jun/2011

Heavy metals are a group of elements with specific features and natural occurrence in the environment, representing an accessory in the formation of rocks. These elements, although associated with toxicity, must be treated different from xenobiotics, since many metals are evidentially essentials (Fe, Mn, Cu, Zn, and Ni) and beneficial (Co) for plants. In this context, the objective was to determine the natural contents of the metals iron (Fe), manganese (Mn), zinc (Zn), nickel (Ni), copper (Cu) and cobalt (Co) […]

Lead desorption and leaching in a spodosol amended with chelant agents

Eriberto Vagner de Souza Freitas, Clístenes Williams Araújo do Nascimento, Caroline Miranda Biondi, João Paulo Siqueira da Silva, Adailson Pereira de Souza

01/Jun/2009

Synthetic chelants used to induce phytoextraction are barely degraded in the soil and pose high environmental risks owing to metal leaching. Natural chelating agents can be an alternative to synthetic chelates thanks to their rapid biodegrability. The study was carried out to evaluate the efficiency of Pb desorption of three synthetic chelators and two natural aliphatic acids from a soil contaminated with Pb from a car battery recycling. Additionally, effects of the amendments on Pb leaching from soil were also […]