Asunto(s)
Delfines/metabolismo , Productos Pesqueros/análisis , Insecticidas/análisis , Residuos de Plaguicidas/análisis , Bifenilos Policlorados/análisis , Contaminantes Químicos del Agua/análisis , Tejido Adiposo/química , Animales , Brasil , Monitoreo del Ambiente/métodos , Femenino , Masculino , Agua de MarRESUMEN
Serum levels of organochlorine pesticides (OCP) were measured in agricultural workers from Rio de Janeiro State, Brazil. Blood samples from 26 volunteers (24 males, 02 females, 17-60 years old) were taken in October 1997. OCP residues (op'DDT pp'DDT, pp'DDD, pp'DDE, aldrin, dieldrin, endrin, heptachlor, heptachlor-epoxide, (alpha-, beta- and gamma-hexachlorocyclohexane, and hexachlorobenzene) were analyzed by gas chromatography with an electron capture detector. Tests detected pp'DDE in 16 out of 26 samples, but pp'DDE concentration exceeded 1.4 (microgram/L (i.e. 1.8, 2.4 and 4.4 microgram/L) in only 3 of these. beta-HCH was found in 6 (23.1%) out of 26 samples. In one sample (-HCH did not exceed 1.4 microgram/L, but in the remaining samples concentrations ranged from 1.4 to 5.3 microgram/L. The percentage of positive pp'DDE samples increased from the youngest /= 40 yrs: 100%). A similar trend was found for beta-HCH contamination (/= 40 yrs: 66.7%). Dieldrin was found in only one sample. No other OCP residue was found in the samples. Serum concentrations of OCPs found in this study are comparable to blood levels reported for the non-occupationally exposed population in Brazil and elsewhere.
Asunto(s)
Agricultura , Hidrocarburos Clorados , Insecticidas/sangre , Exposición Profesional/análisis , Población Rural , Adolescente , Adulto , Factores de Edad , Agricultura/estadística & datos numéricos , Brasil , Cromatografía de Gases , Femenino , Humanos , Masculino , Persona de Mediana Edad , Exposición Profesional/estadística & datos numéricos , Población Rural/estadística & datos numéricosRESUMEN
A study of a sample of 251 children aged between 1 and 10 was carried out in 6 districts of Cubatão county, S. Paulo State, Brazil. This study showed the presence of organochlorine pesticides in the blood serum of 242 children. p-p' DDE was detected in 73 of the samples (30%) and HCH in 47 of them (19%). The mean value of p-p' DDE was 0.85 +/- 2.13 micrograms/l. and that of HCH was 0.28 +/- 0.79 micrograms/l. Lead and mercury were also detected in the blood serum. The mean value for lead was 17.8 +/- 5.8 micrograms/l. and for mercury was 9.1 +/- 0.79 micrograms/l. The levels found in consumers of aquatic organisms taken from the rivers of Cubatão showed a mean mercury level (mean = 14.7 +/- 7.1 micrograms/l.) higher than (p < 0.04) that of those who did not consume any aquatic organisms at all (mean = 10.0 +/- 6.5 micrograms/l.).