Joao Paulo Machado Torres, Ph.D.

Dr. Joao Paulo Machado Torres, a renowned expert on the effects of DDT and other pollutants on human health, is associate professor of biophysics in the Federal University of Rio de Janeiro, Brazil. He has published extensively in the area of environmental pollution and its effects on the health of humans and animals. Awarded the Irving J. Selikoff Scholarship in 1999, he worked with Dr. Mary Wolff, PhD, on a research project about the fate of DDT in the tropical environment of Brazil. Dr. Torres was also awarded the Irving J. Selikoff Advanced Scholarship in 2003, to support further research on pesticides and their effects on human health. Dr. Torres’ additional research interests include the fate of heavy metals and organic micropollutants (PCBs, DDTs and PAHs) in the tropical environment, especially the Amazon River Basin.

Institutional Affiliation

Laboratorio de Radioisotopos Eduardo Penna Franca Instituto de Biofisica Carlos Chagas Universidad Federal de Rio de Janeiro

Mailing Address

Laboratorio de Radioisotopos Eduardo Penna Franca
Instituto de Biofisica Carlos Chagas
Universidad Federal do Rio de Janeiro
Av. Brig. Trompowsky s/n, CCS, Bloco G
Ilha do Fundao
Rio de Janeiro
CEP 21941-900

E-mail Address

Irving J. Selikoff Advanced Scholarship Project

Analysis of Organochloride Based Pesticide Contaminants and their Metabolites in Human Breast Milk from the Amazon Region, Particularly from the Basin of the Madeira River, RO

Irving J. Selikoff Scholarship Project

DDT in the Amazon Biota

In order to understand the fate of DDT in the Tropical Environment, fish samples collected since the beginning of the 1990s were analyzed for their DDT content. The methods include more refined techniques developed by the US-FDA such as sep-pak cartridges. Most of the samples had high to moderate DDT levels, but a somewhat declining pattern is observed in the samples collected this year. DDE is the main metabolite present in most of the samples. Efforts are now focused on the analysis of breast milk collected at riverside villages that consume more fish.

Partial Bibliography

Machado-Torres J, Malf O, Vieira-Reis E, Japenga J, Ferdinand G. Organic Micropollutants on River Sediments from Rio de Janeiro State, Southeast Brazil. Artigo 2002; 18(x): 109-118.

Vieira EDR, Torres, JPM and Malf O. 2001. DDT Environmental Persistence from Its Use in a Vector Control Program: A Case Study. Environmental Research Section 2001; Section A 86: 174-182.

D’Amato C, Torres JPM e Malf O. 2002. DDT (Dicloro difenil tricloroetano) toxicidade e contaminação ambiental – Uma revisão. Química Nova 25(6)995-1002.

Torres, JPM, Pfeiffer, WC, Markowitz S, Pause R, Malf O and Japenga J. 2002. Dichlorodiphenyltrichloroethane in soil, river sediment and fish in the Amazon in Brazil. Environmental Research Section A 88 134-139.

Torres, JPM, Malf O, Japenga J and Koopmans. 2002. Organic Micropollutants on River Sediments from Rio de Janeiro State. Cadernos de Saúde Pública. ENSP, Fiocruz. 18(2): 477-488.

Vieira EDR, Torres JPM e Malf O 2000. Persistência Ambiental e Biológica do DDT: Estudo de um caso em área de leishmaniose. Cadernos de Saúde Coletiva,
Vol. 8, No. 2, pp. 55-70.

Torres, JPM; Malf, O and Japenga, J. 1999. Organochlorinated compounds and plycyclic aromatic hydrocarbon determination on sediments from tropical rivers in Brazil. Ciência e Cultura – Journal of the Brazilian Association for the Advancement of Science, Vol 51(1)54-59.

Kehrig, HA; Malf, O; Akagi, H; Guimarães, JRD; Torres, JPM. 1998. “Methyl mercury in fish and hair samples, Balbina Reservoir, Brazilian Amazon”. Environmental Research, 77, 84-90.

Augusto, LGS; Pontes, C; Costa, AM e Torres, JPM. 1998. O programa de erradicação do Aedes Aegypti: inócuo e perigoso. Cadernos de Saúde Pública, Vol. 14. No. 4 pp. 876.

Book chapters

Carvalho CEV and Torres JPM. 2002. The Ecohydrology of the Paraiba do Sul River Basin. In: The Ecohydrology of South American Rivers and Wetlands (Chapter 10). McClain M. (Ed). Special publication No. 6 of the International Association of Hydrological Sciences: A Contribution of the UNESCO Ecohydrology Programme.