Impacts on the quality of surface water in a urban perimeter of the Rio Grande watershed, Brazilian Cerrado Terly Gabriela Quiñonez Fuentes, Georje Lincon de Castro Oliveira, Emanuele de Jesus Souza, Natália da Glória França Nascimento, Saulo José da Silva Marques, Sayonara de Souza Guedes, Danilo Corado de Melo, Claudia Vieira Prudencio, Roberto Bagattini Portella, Maico Chiarelotto Environmental Monitoring and Assessment, 2024
Quality index of an oxisol under different management systems in the Brazilian cerrado Marla O. Fagundes, Diony A. Reis, Roberto B. Portella, Fabiano J. Perina, Julio C. Bogiani Revista Brasileira De Engenharia Agricola E Ambiental, 2021 Assessing soil quality under different cover crops or different management systems is essential to its conservation. This study aimed to evaluate an Oxisol cultivated with corn and cotton, after different crop successions and under no-tillage system (NTS) and conventional tillage system (CT), through the soil quality index (SQI), using an area of native Cerrado as reference. The study was carried out in the municipality of Luís Eduardo Magalhães, Western Bahia, Brazil. Soil samples with the preserved and non-preserved structure were collected in the layers of 0-0.05 m, 0.05-0.10 m, and 0.10-0.20 m to determine the macroporosity, the soil bulk density, the available water, the levels of total organic carbon, the clay dispersed in water, and the degree of flocculation. The averages of the attributes measured in the treatments and the soil quality index, which was elaborated by the method of deviations of the values of the attributes measured in the treatments concerning the reference area, followed by normalization, were compared by the Duncan test (p ≤ 0.05). The soil under CT, in all treatments, had its quality reduced when compared to the NTS. Also, the SQI used was sensitive to detect the changes caused by the management systems and assign consistent scores to the evaluated soil quality.
Human milk contamination by nine organochlorine pesticide residues (OCPs) Raiane Costa Souza, Roberto Bagattini Portella, Paula Valéria Nunes Brito Almeida, Caroline Oliveira Pinto, Priscila Gubert, José Domingos Santos da Silva, Thamilin Costa Nakamura, Enoc Lima do Rego Journal of Environmental Science and Health Part B Pesticides Food Contaminants and Agricultural Wastes, 2020 Organochlorine pesticides (OCPs) are widely used around the world as insecticides, herbicides, fungicides, nematicides, and rodenticides. Despite banned in Brazil, the usage remains occurring in many countries. The persistence and extreme mobility of OCPs contribute to the contamination of the environment and the human body. The OCPs bioaccumulation in adipose tissue triggers the excretion into human milk during breastfeeding. Hence, the present study determined eighteen OCPs residues in the breast milk of mothers from the Western Region of Bahia State, Brazil. Nine different residue species were found, including beta-Hexachlorocyclohexane (9.24 ± 0.00 ng g−1 fat), delta- Hexachlorocyclohexane (22.15 ± 10.48 ng g−1 fat), Heptachlor (58.08 ± 74.13 ng g−1 fat), Aldrin (142.65 ± 50.65 ng g−1 fat), Dieldrin (774.62 ± 472.68 ng g−1 fat), Endosulfan I (408.44 ± 245.51 ng g−1 fat), Dichloro-diphenyl-dichloro-ethylene (29.17 ± 22.42 ng g−1 fat), Dichloro-diphenyl-trichloro-ethane (28.87 ± 0.00 ng g−1 fat) and Methoxychlor (1699.67 ± 797.43 ng g−1 fat). The Methoxychlor presence in all samples may reveal a recent exposure, while Dieldrin and Endosulfan I analyses can point to distant past exposure.
Evaluation of pb and cd exposure in children 0 to 17 years of age by consumption of vegetable food cultivated in soils contaminated in Santo Amaro (BA) Gustavo Alonso Muñoz Magna, Sandro Lemos Machado, Roberto Bagattini Portella, Miriam de Fátima Carvalho Engenharia Sanitaria E Ambiental, 2014 O objetivo do presente trabalho foi estimar as doses de exposição aos contaminantes chumbo (Pb) e cádmio (Cd) em crianças de 0 a 17 anos de idade via consumo de alimentos vegetais cultivados em quintais contaminados, localizados no entorno de uma metalúrgica desativada, no município de Santo Amaro, Estado da Bahia. Para a estimativa das doses foi utilizada a metodologia de avaliação de riscos sobre a saúde humana, especificamente a etapa de análise da exposição, determinando as concentrações dos metais e variáveis sociodemográficas das crianças. As doses de exposição estimadas para ambos os contaminantes superaram os valores recomendados pela Organização Mundial da Saúde (OMS), atingindo valores máximos de exposição de 166,9 μg.kg−1 dia−1 e 2,95 μg.kg−1 dia−1 para o Pb e o Cd, respectivamente, por consumo de frutas. Os resultados comprovam que o consumo de alimentos vegetais cultivados em quintais pela população residente próxima à antiga fábrica é uma importante rota de exposição atual aos metais, representando um risco para a saúde da população.
Lead and cadmium detected in plant foods and grasses in Santo Amaro, Bahia Gustavo Alonso Muñoz Magna, Sandro Lemos Machado, Roberto Bagattini Portella, Miriam de Fátima Carvalho Quimica Nova, 2013 This study evaluated the level of the metals Pb mg kg-1 and Cd mg kg-1 found in plant species and the contribution of the levels detected in contaminated soils located in the urban area of the city of Santo Amaro, Bahia. Levels were determined by graphite furnace and flame atomic absorption spectrometry. The results showed the presence of Pb and Cd in plant species at levels ranging from 0.18 to 118.2 mg kg-1 and 0.04 to 7.29 mg kg-1, respectively. The concentration values obtained varied according to the plant species and were not strongly influenced by the concentration values detected in the soil.
A study of the routes of contamination by lead and cadmium in Santo Amaro, Brazil: a response to the comments of Andrade Lima. Environmental Technology, 2013
A study of the routes of contamination by lead and cadmium in Santo Amaro, Brazil Sandro Machado, Thaynara Santana Rabelo, Roberto Bagattini Portella, Miriam de Fátima Carvalho, Gustavo Alonso Muñoz Magna Environmental Technology United Kingdom, 2013 The problem of contamination by cadmium and lead in Santo Amaro, Brazil, has been studied since 1970 and the severity of this contamination case has been demonstrated by many authors. This study evaluates the persistence of the superficial soil contamination around the metallurgical plant and attempts to correlate the lead and cadmium concentrations to the past atmospheric emissions from the lead plant and with the presence of lead debris under urban road surface and in the backyards of homes. Past emissions still play an important role in soil contamination. In areas without debris, about 30% of the soil samples had lead concentrations above the agricultural use limit of 180 parts per million (ppm) (according to CONAMA 420, 2009), 20% of the samples had concentrations above 300 ppm (maximum for residential use) and 9.6% of the samples had concentrations above 900 ppm (maximum for industrial use). These concentrations are higher cldse to the chimney of the metallurgical plant. An average lead concentration of 1316 ppm was found in the backyard samples. About 80% of the houses had lead concentrations above 300 ppm and about 50% of the samples had values above 900 ppm, indicating the importance of the lead debris in the contamination scenario. Although a matter of concern, the cadmium concentrations seem to be less problematic than lead at the present time, probably due to the higher mobility of cadmium. The cadmium concentrations in the atmospheric dispersion and backyard samples showed similar trends, while the influence of the lead debris on the soil contamination is less evident.
A study of the routes of contamination by lead and cadmium in Santo Amaro, Brazil: A response to the comments of Andrade Lima Sandro Machado, Miriam de Fátima Carvalho, Gustavo Magna, Roberto Portella Environmental Technology United Kingdom, 2013 This text is part of the discussion about the case of contamination by heavy metals in Santo Amaro, Brazil and the routes of contamination still active in the city. It is presented the point of view of the authors about the questions raised in the text of Prof. Andrade Pinho, presented in this journal issue, as well as the replies considered pertinent by the authors.
