This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1021/es100141m in citations.
Transformation and sorption of the veterinary antibiotic sulfadiazine in two soils: A short-term batch study
Transformation and sorption of the veterinary antibiotic sulfadiazine in two soils: A short-term batch study
The worldwide use of veterinary antibiotics poses a continuous threat to the environment. There is, however, a lack of mechanistic studies on sorption and transformation processes for environmental assessment in soils. Two-week batch sorption experiments were performed with the antibiotic sulfadiazi...
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Personal Name(s): | Kasteel, R. |
---|---|
Mboh, C.M. / Unold, M. / Groeneweg, J. / Vanderborght, J. / Vereecken, H. | |
Contributing Institute: |
Agrosphäre; ICG-4 JARA - HPC; JARA-HPC JARA-ENERGY; JARA-ENERGY |
Published in: | Environmental Science & Technology, 44 (2010) S. 4651 - 4657 |
Imprint: |
Columbus, Ohio
American Chemical Society
2010
|
Physical Description: |
4651 - 4657 |
PubMed ID: |
20465301 |
DOI: |
10.1021/es100141m |
Document Type: |
Journal Article |
Research Program: |
Terrestrische Umwelt |
Series Title: |
Environmental Science and Technology
44 |
Subject (ZB): | |
Publikationsportal JuSER |
The worldwide use of veterinary antibiotics poses a continuous threat to the environment. There is, however, a lack of mechanistic studies on sorption and transformation processes for environmental assessment in soils. Two-week batch sorption experiments were performed with the antibiotic sulfadiazine (SDZ) in the plow layer and the subsoil of a loamy sand and a silty loam. The sorption and transformation parameters of SDZ and its main transformation products N1-2-(4-hydroxypyrimidinyl) benzenesulfanilamide (4-OH-SDZ) and 4-(2-iminopyrimidin-1(2H)-yl)aniline (An-SDZ) were estimated using a global optimization algorithm. A two-stage, one-rate sorption model combined with a first-order transformation model adequately described the batch data. Sorption of SDZ was nonlinear, time-dependent, and affected by pH, with a higher sorption capacity for the loamy sand. Transformation of SDZ into 4-OH-SDZ occurred only in the liquid phase, with half-life values of 1 month in the plow layers and 6 months in the subsoils. Under the exclusion of light, An-SDZ was formed in substantial amounts in the silty loam only, with liquid phase half-life values of 2 to 3 weeks. Despite the rather large parameter uncertainties, which may be reduced using additional information obtained from sequential solid phase extraction, the proposed method provides a framework to assess the fate of antibiotics in soils. |