Environmental photochemistry of fluoroquinolones in soil and in aqueous soil suspensions under solar light
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- 作者：Michela Sturini (1)
Andrea Speltini (1)
Federica Maraschi (1)
Luca Pretali (2)
Antonella Profumo (1)
Elisa Fasani (1)
Angelo Albini (1) - 关键词：Fluoroquinolones ; Photodegradation ; Photoproducts ; Environmental fate ; Water–soil interface ; Depollution path
- 刊名：Environmental Science and Pollution Research
- 出版年：2014
- 出版时间：December 2014
- 年：2014
- 卷：21
- 期：23
- 页码：13215-13221
- 全文大小：403 KB
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文摘
The photodegradation fate of widely used fluoroquinolone (FQ) drugs has been studied both at the water–soil interface and in soil at actual concentrations (500?ng?g?) under natural solar light. Both human and veterinary drugs have been examined, namely ciprofloxacin, danofloxacin, enrofloxacin, levofloxacin, marbofloxacin and moxifloxacin. After spiking and irradiation, samples were submitted to microwave-assisted extraction and analyzed by high-performance liquid chromatography coupled to fluorescence detection (HPLC–FD). FQs degradation was faster in aqueous soil suspension than in neat soil (but lower than in “clean-water). A number of byproducts were identified by HPLC electrospray ionization tandem mass spectrometry after a post-extraction cleanup based on a molecularly imprinted polymer phase, for a more accurate detection. The distribution in the suspension was intermediate between those observed in soils and in aqueous solutions.