Organochlorine pesticides in soils from south-western Uganda

Ssebugere, Patrick; Wasswa, John; Mbabazi, Jolocam; Nyanzi, Steven A.; Kiremire, Bernard T.; Marco, John A.M.

doi:10.1016/j.chemosphere.2009.12.039

Cited by 52 publications

(26 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No attempt was made to clarify the further dechlorination products of p,p 0 -DDD and p,p 0 -DDE, in view of DDTs reductive dechlorination pathway and metabolism have been well defined. The present results were in accordance with the common biotic reductive dechlorination pathways (Wedemeyer, 1967), and support previous finding that DDD and DDE were the two main metabolites of DDT in anaerobic environments (Ssebugere et al, 2010;Yang et al, 2010;Zhang et al, 2011). Therefore, the results implicated that RSC-induced natural dechlorination may play an important role in the fate of organochlorines.…”

Section: Dechlorination Pathways Of Pp 0 -Ddts By Rscsupporting

confidence: 92%

Dechlorination of p,p′-DDTs coupled with sulfate reduction by novel sulfate-reducing bacterium Clostridium sp. BXM

Bao

Wang

et al. 2012

Environmental Pollution

View full text Add to dashboard Cite

a b s t r a c tA novel non-dsrAB (without dissimilatory sulfite reductase genes) sulfate-reducing bacterium (SRB) Clostridium sp. BXM was isolated from a paddy soil. Incubation experiments were then performed to investigate the formation of reduced sulfur compounds (RSC) by Clostridium sp. BXM, and RSC-induced dechlorination of p,p 0 -DDT in culture medium and soil solution. The RSCs produced were 5.8 mM and 4.5 mM in 28 mM sulfate amended medium and soil solution respectively after 28-day cultivation. The p,p 0 -DDT dechlorination ratios were 74% and 45.8% for 5.8 mM and 4.5 mM RSCs respectively at 6 h. The metabolites of p,p 0 -DDT found in the two reaction systems were identified as p,p 0 -DDD and p,p 0 -DDE. The dechlorination pathways of p,p 0 -DDT to p,p 0 -DDD and p,p 0 -DDE were proposed, based on mass balance and dechlorination time-courses. The results indicated that RSC-induced natural dechlorination may play an important role in the fate of organochlorines.Crown

show abstract

Section: Dechlorination Pathways Of Pp 0 -Ddts By Rscsupporting

confidence: 92%

Dechlorination of p,p′-DDTs coupled with sulfate reduction by novel sulfate-reducing bacterium Clostridium sp. BXM

Bao

Wang

et al. 2012

Environmental Pollution

View full text Add to dashboard Cite

show abstract

“…The Stockholm convention on POPs in 2001 is an outcome of this growing concern about the persistent organic pollutants including organochlorine pesticides. Although they were banned since 1970s, these chemicals are still routinely found in agricultural soils in some developing countries (Falandysz et al 2001, Ssebugere et al 2010). According to some authors, historically contaminated agricultural soils are reservoirs from which old pesticides can disseminate in the environment (Wania andMackay 1996, Harner et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Organochlorine Pesticide Residues in Agricultural Soils From Région Des Plateaux in Togo

Kolani

Mawussi

Sanda

2017

Rev. Int. Contam. Ambie.

View full text Add to dashboard Cite

Région des Plateaux in Togo is the highest producer of cash crops (coffee, cocoa, cotton) as well as vegetables. This region is the area with the supreme use of chemical pesticides to enhance agricultural production in Togo (west Africa). As effective as these chemicals may be in achieving this goal, the incidence of their residues on the environment, together with the associated adverse effects, have been of serious concerns. The objective of this study is to assess soils contamination by organochlorine pesticides in vegetable production areas within this region. Fifty-four soil samples were randomly collected from selected farmers' plots within six villages. The analytical methods included solvent extraction of pesticide residues and their subsequent quantification using gas chromatography -electron capture detector (GC-ECD). Twenty one different organochlorine pesticides were analyzed. The analytical results showed that only aldrin, endosulfan (α-, β-and sulfate), and hexachlorocyclohexanes (HCH) isomers, including α-HCH, β-HCH, δ-HCH and γ-HCH were detected in various concentrations. The residuals of aldrin varied from detection limit (DL) (< 0.001 µg/kg) to 0.93 ± 0.03 µg/kg, the concentrations of α-endosulfan from DL to 1.88 ± 0.41 µg/kg, β-endosulfan from DL to 0.4 ± 0.01 µg/kg and endosulfan sulfate from DL to 3.87 ± 0.19 µg/kg. On the other hand the concentration of each isomer of HCH ranged from DL to 0.89 ± 0.07 µg/kg (α-HCH), 14.6 ± 0.12 µg/kg (β-HCH), 4.27 ± 0.61 µg/kg (γ-HCH) and 2.92 ± 0.05 µg/kg (δ-HCH). The pesticide residue concentrations found in the studied soils were highly below maximum residue limits varying from 100 to 8000 µg/kg set by Food and Agriculture Organization of the United Nations (FAO). The detected pesticide residues reflected the type of pesticides that have been used in the study areas. The differences in the concentrations of these pesticide residues in the soil samples are likely the result of substantial inter-farm variation in intensive use of pesticide as well as the variation in their degradation dynamics. The findings of this study provide information on residue levels of organochlorine pesticides in soils from "Région des Plateaux" in Togo. Routine monitoring of pesticide residues in these study areas is necessary for the prevention, control and reduction of environmental pollution, leading to minimize health risks.Palabras clave: oeste de África, producción vegetal, contaminaciónRev. Int. Contam. Ambie. 33 (Especial Biotecnología e ingeniería ambiental) 33-42, 2017 DOI: 10.20937/RICA.2017.33.esp01.03 L. Kolani et al. 34 RESUMENLa región "des Plateaux" en Togo es una de las más grandes productoras de cultivos comercials (café, cocoa, algodón), así como también de verduras. Esta región es el área con el mayor uso de pesticidas químicos para mejorar la producción de la agricultura en Togo (oeste de África). Así como son de efectivos estos químicos, la incidencia de sus residuos en el ambiente también lo es, al igual que los efectos adversos asociados a ellos, ...

show abstract

“…This observation could be explained because these types of pesticides are indeed effective, cheap and safe from the point of view of acute poisoning. The cultural level of the user is very low, and the controls to restrict the illegal trade of these substances are ineffective (Ssebugere et al, 2010). The problem grows because some of these substances (i.e.…”

Section: Environmentally Persistent Pesticidesmentioning

confidence: 99%

Dietary Intake of Environmentally Persistent Plaguicides in the European Population

Almeida-González¹,

Boada²,

Zumbado³

et al. 2011

Pesticides - The Impacts of Pesticides Exposure

View full text Add to dashboard Cite

Organochlorine pesticides in soils from south-western Uganda

Cited by 52 publications

References 17 publications

Dechlorination of p,p′-DDTs coupled with sulfate reduction by novel sulfate-reducing bacterium Clostridium sp. BXM

Dechlorination of p,p′-DDTs coupled with sulfate reduction by novel sulfate-reducing bacterium Clostridium sp. BXM

Organochlorine Pesticide Residues in Agricultural Soils From Région Des Plateaux in Togo

Dietary Intake of Environmentally Persistent Plaguicides in the European Population

Contact Info

Product

Resources

About