2001
DOI: 10.1081/pfc-100103569
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Anaerobic Biodegradation of DDT Residues (Ddt, Ddd, and Dde) in Estuarine Sediment

Abstract: The potential for anaerobic biodegradation of 1,1,1-trichloro-2,2-bischlorophenylethane (DDT), 1,1-dichloro-2,2,-bischlorophenylethane (DDD), and dichlorodiphenylchloroethylene (DDE) in anoxic sediment slurries collected from the Keelung River was investigated in this study. o,p'- and p,p'-DDT were dechlorinated to o,p'- and p,p'-DDD, respectively, and then transformed to other compound(s). 1-Chloro-2,2-bis (p-chlorophenyl) ethylene (DDMU) and trace amount of dichlorobenzophenone (DBP) were detected in sedimen… Show more

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Cited by 40 publications
(23 citation statements)
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“…Tissue distribution of p, p’ -DDE among other DDT congeners were similar to results from previous studies indicating that p, p’ -DDE represents 90 – 97% of DDXs in biological samples (Storelli et al, 2009; Weijs et al, 2010). Because DDT is dechlorinated to p, p’ -DDE under anaerobic condition (Huang et al, 2001) and fish are also known to metabolize DDT (Vives et al, 2005; Kwong et al, 2008), the prevalence of p, p’ -DDE in Lake Apopka LMB might reflect both direct uptake and the metabolic transformation of p, p’ -DDT to p, p’ -DDE in fish. For HCHs, only γ-HCH isomer was measured while the other three isomers were not detected in any of the fish tissues.…”
Section: Resultsmentioning
confidence: 99%
“…Tissue distribution of p, p’ -DDE among other DDT congeners were similar to results from previous studies indicating that p, p’ -DDE represents 90 – 97% of DDXs in biological samples (Storelli et al, 2009; Weijs et al, 2010). Because DDT is dechlorinated to p, p’ -DDE under anaerobic condition (Huang et al, 2001) and fish are also known to metabolize DDT (Vives et al, 2005; Kwong et al, 2008), the prevalence of p, p’ -DDE in Lake Apopka LMB might reflect both direct uptake and the metabolic transformation of p, p’ -DDT to p, p’ -DDE in fish. For HCHs, only γ-HCH isomer was measured while the other three isomers were not detected in any of the fish tissues.…”
Section: Resultsmentioning
confidence: 99%
“…La explicación de esta relación es que tales bacterias se encuentran en ambientes reducidos que son propicios para la descloración reductiva del DDT a DDD; además, no se descarta que las BRS detectadas en la zona de estudio lleven a cabo este proceso de degradación. Huang et al (2001), en un ensayo de biodegradación anaeróbica con DDT en sedimentos estuarinos, encontró que las BRS estuvieron significativamente involucradas en la descloración del p,p′-DDT.…”
Section: Discussionunclassified
“…o,p'-DDE and p,p'-DDE are produced by abiotic dehydrochlorination or aerobic degradation of the o,p'-and p,p'-DDT isomers. p,p'-DDE was the principal DDT congener found in soils after weathering (Li et al, 2008) and both o,p'-and p,p'-DDE are important sediment pollutants Huang et al, 2001;Thomas et al, 2008). p,p'-DDE is also the primary DDT isomer found in wildlife (Fleming and Cromartie, 1981;Miles et al, 2009).…”
Section: Introductionmentioning
confidence: 98%
“…The o,p'-and p,p'-isomer pairs of the principal congeners are simply substitutional isomers that are presumed to degrade in the environment by similar pathways, but with different rates; the p,p'-isomers are generally more biologically active (Thomas, et al, 2008). The principal products of dechlorination of o,p'-and p,p'-DDT in reducing environments including sediments are o,p'-DDD and p,p'-DDD, respectively (Huang et al, 2001). Reductive dechlorination of these DDD isomers can ultimately produce small yields of p,p'-DDA (Fig.…”
Section: Introductionmentioning
confidence: 98%
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