Open Access Green as soon as Postprint is submitted to ZB.
		
    13C/12C and 15N/14N isotope analysis to characterize degradation of atrazine: Evidence from parent and daughter compound values.
        
        Environ. Sci. Technol. 47, 6884-6891 (2013)
    
    
    
	    Atrazine (Atz) and its metabolite desethylatrazine (DEA) frequently occur in the environment. Conclusive interpretation of their transformation is often difficult. This study explored evidence from (13)C/(12)C and (15)N/(14)N isotope trends in parent and daughter compounds when Atz was dealkylated by (i) permanganate and (ii) the bacterium Rhodococcus sp. NI86/21. In both transformations, (13)C/(12)C ratios of atrazine increased strongly (εcarbon/permanganate = -4.6 ± 0.6‰ and εcarbon/Rhodoccoccus = -3.8 ± 0.2‰), whereas nitrogen isotope fractionation was small. (13)C/(12)C ratios of DEA showed the following trends. (i) When DEA was formed as the only product (Atz + permanganate), (13)C/(12)C remained constant, close to the initial value of Atz, because the carbon atoms involved in the reaction step are not present in DEA. (ii) When DEA was formed together with desisopropylatrazine (biodegradation of Atz), (13)C/(12)C increased but only within 2‰. (iii) When DEA was further biodegraded, (13)C/(12)C increased by up to 9‰ giving strong testimony of the metabolite's breakdown. Two lines of evidence emerge. (a) Enrichment of (13)C/(12)C in DEA, compared to initial Atz, may contain evidence of further DEA degradation. (b) Dual element ((15)N/(14)N versus (13)C/(12)C) isotope plots for dealkylation of atrazine agree with indirect photodegradation but differ from direct photolysis and biotic hydrolysis. Trends in multielement isotope data of atrazine may, therefore, decipher different degradation pathways.
	
	
      Impact Factor
		Scopus SNIP
		Web of Science
Times Cited
		Times Cited
Scopus
Cited By
		Cited By
Altmetric
		
	    5.257
		2.003
		17
		17
		
	    Annotations
	    
		
		     
		    
		
	    
	
		
	
	    Special Publikation
	    
		
		     
		
	    
	
	
	
	    Hide on homepage
	    
		
		     
		
	    
	
	
        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
     
    
    
        Keywords
        Anaerobic Biodegradation ; Enhanced Degradation ; Stable Carbon ; Fractionation ; Fate ; Soil ; Groundwater ; Mechanisms ; Deethylatrazine ; Mississippi
    
 
     
    
    
        Language
        english
    
 
    
        Publication Year
        2013
    
 
     
    
        HGF-reported in Year
        2013
    
 
    
    
        ISSN (print) / ISBN
        0013-936X
    
 
    
        e-ISSN
        1520-5851
    
 
    
     
     
	     
	 
	 
     
	
    
        Quellenangaben
        
	    Volume: 47,  
	    Issue: 13,  
	    Pages: 6884-6891 
	    
	    
	
    
 
    
         
        
            Publisher
            ACS
        
 
        
            Publishing Place
            Washington, DC
        
 
	
         
         
         
         
         
	
         
         
         
    
         
         
         
         
         
         
         
    
        Reviewing status
        Peer reviewed
    
 
    
        Institute(s)
        Institute of Groundwater Ecology (IGOE)
    
 
    
        POF-Topic(s)
        20403 - Sustainable Water Management
    
 
    
        Research field(s)
        Environmental Sciences
    
 
    
        PSP Element(s)
        G-504390-001
    
 
     
     	
    
        PubMed ID
        23627882
    
    
    
        WOS ID
        WOS:000321521400022
    
    
        Scopus ID
        84880129001
    
    
        Erfassungsdatum
        2013-07-29