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Assessment of organochlorine pesticide residues in Atlantic Rain Forest fragments, Rio de Janeiro, Brazil |
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| Authors: | Quinete Natalia Soares de Oliveira Elba dos Santos Fernandes Daniella R Avelar Andre de Souza Santelli Ricardo Erthal |
| Institution: | a Instituto Nacional de Tecnologia, Departamento de Química Analítica, Laboratório de Química Analítica e Metrologia em Química, Av. Venezuela, 82 - Rio de Janeiro, RJ 20081-312, Brazil b Instituto Nacional de Tecnologia, Departamento de Energia, Av. Venezuela, 82 - Rio de Janeiro, RJ 20081-312, Brazil c Universidade Federal do Rio de Janeiro, Instituto de Química, Departamento de Química Analítica, CT - Bloco A, Cidade Universitária, 21941-909 - Rio de Janeiro, Brazil d Universidade Federal do Rio de Janeiro, Departamento de Geografia, Instituto de Geociências, CCMN, Bloco F, Cidade Universitária, 21941-919 - Rio de Janeiro, Brazil |
| Abstract: | A superficial water quality survey in a watershed of the Paraíba do Sul River, the main water supply for the most populated cities of southeastern Brazil, was held in order to assess the impact of the expansion of agricultural activity in the near border of the Atlantic Rain Forest. The aim of this study was to investigate the presence of priority organochlorine pollutants in soils and superficial waters of Atlantic rainforest fragments in Teresópolis, Rio de Janeiro State. Soil sample preparations were compared by using ultrasound, microwave assisted extraction and Soxhlet extraction. Recoveries of matrix spiked samples ranged from 70 to 130%. Analysis of a certified soil material showed recoveries ranging from 71 to 234%. Although low concentrations of organochlorine residues were found in water and soil samples, this area is of environmental importance and concern, thus demanding a monitoring program of its compartments. |
| Keywords: | Organochlorine pesticides Atlantic rainforest Microwave Assisted Extraction Ultrasound Gas chromatography |
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