Journal Article

PreJuSER-21203

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Long-term persistence of various 14C-labeled pesticides in soils

Jablonowski, N. D.FZJ* ; Linden, A. ; Köppchen, S.FZJ* ; Thiele, B.FZJ* ; Hofmann, D.FZJ* ; Mittelstaedt, W.FZJ* ; Pütz, T.FZJ* ; Burauel, P.FZJ*

2012
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/7470  doi:10.1016/j.envpol.2012.04.022

Abstract: The fate of the 14C-labeled herbicides ethidimuron (ETD), methabenzthiazuron (MBT), and the fungicide anilazine (ANI) in soils was evaluated after long-term aging (9-17 years) in field based lysimeters subject to crop rotation. Analysis of residual 14C activity in the soils revealed 19% (ETD soil; 0-10 cm depth), 35% (MBT soil; 0-30), and 43% (ANI soil; 0-30) of the total initially applied. Accelerated solvent extraction yielded 90% (ETD soil), 26% (MBT soil), and 41% (ANI soil) of residual pesticide 14C activity in the samples. LC-MS/MS analysis revealed the parent compounds ETD and MBT, accounting for 3% and 2% of applied active ingredient in the soil layer, as well as dihydroxy-anilazine as the primary ANI metabolite. The results for ETD and MBT were matching with values obtained from samples of a 12 year old field plot experiment. The data demonstrate the long-term persistence of these pesticides in soils based on outdoor trials.

Keyword(s): Benzothiazoles: analysis (MeSH) ; Carbon Radioisotopes (MeSH) ; Environmental Monitoring (MeSH) ; Fungicides, Industrial: analysis (MeSH) ; Herbicides: analysis (MeSH) ; Methylurea Compounds: analysis (MeSH) ; Models, Chemical (MeSH) ; Soil: chemistry (MeSH) ; Soil Pollutants: analysis (MeSH) ; Triazines: analysis (MeSH) ; Benzothiazoles ; Carbon Radioisotopes ; Fungicides, Industrial ; Herbicides ; Methylurea Compounds ; Soil ; Soil Pollutants ; Triazines ; ethidimuron ; dyrene ; methabenzthiazuron ; J ; Ethidimuron (auto) ; Methabenzthiazuron (auto) ; Anilazine (auto) ; Persistence (auto) ; Bound residues (auto)

Note: Sincere thanks are due to Bayer Crop Science for the initial support and funding of the lysimeter studies and for the chemical standards. Help and assistance in the laboratory from Martina Krause and Ulrike Langen is highly appreciated. We are grateful for the maintenance of the outdoor lysimeters by the technical staff of the Agrosphere institute. The entire experiment was conducted at the Agrosphere institute, IBG-3.

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Contributing Institute(s):

1. Pflanzenwissenschaften (IBG-2)
2. Agrosphäre (IBG-3)
3. Zentralabteilung für Chemische Analysen (ZCH)

Research Program(s):

1. Atmosphäre und Klima (P23)

Appears in the scientific report 2012

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Database coverage:
; ; BIOSIS Previews ; Current Contents - Agriculture, Biology and Environmental Sciences ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection ; Zoological Record

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