[Residual concentration of hexachlorocyclohexane in a contaminated site in Cidade dos Meninos, Duque de Caxias, Rio de Janeiro, Brazil, after calcium oxide treatment].

Abstract:

:Hexachlorocyclohexanes (HCHs) are currently considered potentially carcinogenic to humans. In Brasil, severe soil contamination by HCHs has been identified at Cidade dos Meninos, Duque de Caxias, Rio de Janeiro, where an old HCH factory was abandoned 40 years ago, leaving 1,700 local residents at risk. Calcium oxide treatment was performed on the most heavily contaminated (focus) area. Analysis of superficial soil samples collected years after treatment still showed high residual HCH. Contamination levels as high as 6,200mg/Kg and 7,320mg/Kg were found for alpha- and beta-HCH isomers. For the gamma- and delta-HCH isomers, concentrations reached up to 140mg/Kg and 530mg/Kg, respectively. The results showed that calcium oxide treatment was not efficient to decontaminate the soil in this area.

journal_name

Cad Saude Publica

authors

de Oliveira RM,Bastos LH,de Oliveira e Dias AE,da Silva SA,Moreira JC

doi

10.1590/s0102-311x2003000200011

keywords:

subject

Has Abstract

pub_date

2003-03-01 00:00:00

pages

447-53

issue

2

eissn

0102-311X

issn

1678-4464

pii

S0102-311X2003000200011

journal_volume

19

pub_type

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