Document Detail


Investigating the in situ degradation of atrazine in groundwater.
MedLine Citation:
PMID:  16470679     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study focused on whether or not atrazine could be degraded by indigenous groundwater bacteria as part of an in situ remediation approach. Groundwater was taken from an unconfined middle upper chalk site where concentrations of atrazine and nitrate were typically in the ranges 0.02-0.2 microg litre-1 and 11.6-25.1 mg NO3-N litre-1 respectively. Sacrificial batch studies were performed using this groundwater spiked with atrazine at a concentration of 10 microg litre-1 in conjunction with a minimal mineral salts liquid (Glu-MMSL) medium which contained glucose as the sole carbon source. Treatments comprised either the Glu-MMSL groundwater cultured bacteria or Pseudomonas sp. strain ADP. Results from sacrificial batches indicated the occurrence of bacterial growth and denitrification as monitored by optical density (absorbance at 600 nm) and NO3-N content. Analysis of atrazine content by solid phase extraction coupled with high-performance liquid chromatography showed no degradation of atrazine over a period of 103 days in either treatment. These results indicated that no acclimatised bacterial community featuring positive degraders to the herbicide atrazine had become established within this chalk aquifer in response to the trace levels encountered.
Authors:
Robert Pearson; Andrew Godley; Elise Cartmell
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pest management science     Volume:  62     ISSN:  1526-498X     ISO Abbreviation:  Pest Manag. Sci.     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-03-20     Completed Date:  2006-06-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100898744     Medline TA:  Pest Manag Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  299-306     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2006 Society of Chemical Industry.
Affiliation:
School of Water Sciences, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK.
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Biological
Atrazine / metabolism*
Biodegradation, Environmental
Herbicides / metabolism*
Pseudomonas / metabolism*
Water Microbiology
Water Pollutants, Chemical / metabolism*
Chemical
Reg. No./Substance:
0/Herbicides; 0/Water Pollutants, Chemical; 1912-24-9/Atrazine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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