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Assessment of organochlorine pesticide pollution in Upper Awash Ethiopian state farm soils using selective pressurised liquid extraction.

Westbom, Rikard LU ; Hussen, Ahmed; Megersa, Negussie; Retta, Negussie; Mathiasson, Lennart LU and Björklund, Erland LU (2008) In Chemosphere 72(8). p.1181-1187
Abstract
Upper Awash Agro Industry Enterprises (UAAIE) is one of the major state farms in Ethiopia with known large-scale pesticide use. Although organochlorine pesticides (OCPs) have been applied for about three decades, no studies have been carried out on levels of residue in the region. In this work a fast selective pressurised liquid extraction (SPLE) methodology has successfully been applied for screening of 13 OCPs in 12 soil samples from different fields in UAAIE, which further strengthen this methodology. Quantitative and qualitative analyses were done using a dual column gas chromatography-electron capture detection system (GC-ECD) and a GC equipped with a mass spectrometer (MS), respectively. The main contaminants identified comprised of... (More)
Upper Awash Agro Industry Enterprises (UAAIE) is one of the major state farms in Ethiopia with known large-scale pesticide use. Although organochlorine pesticides (OCPs) have been applied for about three decades, no studies have been carried out on levels of residue in the region. In this work a fast selective pressurised liquid extraction (SPLE) methodology has successfully been applied for screening of 13 OCPs in 12 soil samples from different fields in UAAIE, which further strengthen this methodology. Quantitative and qualitative analyses were done using a dual column gas chromatography-electron capture detection system (GC-ECD) and a GC equipped with a mass spectrometer (MS), respectively. The main contaminants identified comprised of previously used persistent organic pollutants (POPs) and currently used insecticides. Low concentrations or non-detectable levels of certain OCPs (aldrin, dieldrin, endrin, and heptachlor) indicate a positive phasing out of these persistent organic pollutants (POPs). Similarly HCHs were found in few soils and at low concentrations. Endosulfans and DDTs were detected in substantial amounts in the soils with Sigmaendosulfans up to 56000 and SigmaDDTs up to 230ngg(-1) dry weight, which is a threat to the surrounding and downstream ecosystems, especially considering that the investigated OCPs constituted 29000l of the 63000l of pesticide applied annually on the fields. Additional concerns must be raised concerning synergistic effects of all pesticides added. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Organochlorine pesticides, Persistent organic pollutants, Soil, Ethiopia, Selective pressurised liquid extraction
in
Chemosphere
volume
72
issue
8
pages
1181 - 1187
publisher
Elsevier
external identifiers
  • wos:000258215800012
  • pmid:18479726
  • scopus:45449109991
ISSN
1879-1298
DOI
10.1016/j.chemosphere.2008.03.041
language
English
LU publication?
yes
id
41f6a8e0-d6cf-4c1f-9fdc-3ff61f32515a (old id 1154150)
date added to LUP
2008-10-16 15:57:47
date last changed
2017-01-01 05:13:19
@article{41f6a8e0-d6cf-4c1f-9fdc-3ff61f32515a,
  abstract     = {Upper Awash Agro Industry Enterprises (UAAIE) is one of the major state farms in Ethiopia with known large-scale pesticide use. Although organochlorine pesticides (OCPs) have been applied for about three decades, no studies have been carried out on levels of residue in the region. In this work a fast selective pressurised liquid extraction (SPLE) methodology has successfully been applied for screening of 13 OCPs in 12 soil samples from different fields in UAAIE, which further strengthen this methodology. Quantitative and qualitative analyses were done using a dual column gas chromatography-electron capture detection system (GC-ECD) and a GC equipped with a mass spectrometer (MS), respectively. The main contaminants identified comprised of previously used persistent organic pollutants (POPs) and currently used insecticides. Low concentrations or non-detectable levels of certain OCPs (aldrin, dieldrin, endrin, and heptachlor) indicate a positive phasing out of these persistent organic pollutants (POPs). Similarly HCHs were found in few soils and at low concentrations. Endosulfans and DDTs were detected in substantial amounts in the soils with Sigmaendosulfans up to 56000 and SigmaDDTs up to 230ngg(-1) dry weight, which is a threat to the surrounding and downstream ecosystems, especially considering that the investigated OCPs constituted 29000l of the 63000l of pesticide applied annually on the fields. Additional concerns must be raised concerning synergistic effects of all pesticides added.},
  author       = {Westbom, Rikard and Hussen, Ahmed and Megersa, Negussie and Retta, Negussie and Mathiasson, Lennart and Björklund, Erland},
  issn         = {1879-1298},
  keyword      = {Organochlorine pesticides,Persistent organic pollutants,Soil,Ethiopia,Selective pressurised liquid extraction},
  language     = {eng},
  number       = {8},
  pages        = {1181--1187},
  publisher    = {Elsevier},
  series       = {Chemosphere},
  title        = {Assessment of organochlorine pesticide pollution in Upper Awash Ethiopian state farm soils using selective pressurised liquid extraction.},
  url          = {http://dx.doi.org/10.1016/j.chemosphere.2008.03.041},
  volume       = {72},
  year         = {2008},
}