Title of article :
Occurrence and sorption of fluoroquinolones in poultry litters and soils from São Paulo State, Brazil Original Research Article
Author/Authors :
Rafael Marques Pereira Leal، نويسنده , , Rafael Fernandes Figueira، نويسنده , , Valdemar Luiz Tornisielo، نويسنده , , Jussara Borges Regitano، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2012
Pages :
6
From page :
344
To page :
349
Abstract :
Animal production is one of the most expressive sectors of Brazilian agro-economy. Although antibiotics are routinely used in this activity, their occurrence, fate, and potential impacts to the local environment are largely unknown. This research evaluated sorption–desorption and occurrence of four commonly used fluoroquinolones (norfloxacin, ciprofloxacin, danofloxacin, and enrofloxacin) in poultry litter and soil samples from São Paulo State, Brazil. The sorption–desorption studies involved batch equilibration technique and followed the OECD guideline for pesticides. All compounds were analyzed by HPLC, using fluorescence detector. Fluoroquinolonesʹ sorption potential to the poultry litters (Kd ≤ 65 L kg− 1) was lower than to the soil (Kd ~ 40,000 L kg− 1), but was always high (≥ 69% of applied amount) indicating a higher specificity of fluoroquinolones interaction with soils. The addition of poultry litter (5%) to the soil had not affected sorption or desorption of these compounds. Desorption was negligible in the soil (≤ 0.5% of sorbed amount), but not in the poultry litters (up to 42% of sorbed amount). Fluoroquinolonesʹ mean concentrations found in the poultry litters (1.37 to 6.68 mg kg− 1) and soils (22.93 μg kg− 1) were compatible to those found elsewhere (Austria, China, and Turkey). Enrofloxacin was the most often detected compound (30% of poultry litters and 27% of soils) at the highest mean concentrations (6.68 mg kg− 1 for poultry litters and 22.93 μg kg− 1 for soils). These results show that antibiotics are routinely used in poultry production and might represent one potential source of pollution to the environment that has been largely ignored and should be further investigated in Brazil.
Keywords :
Veterinary antibiotics , Desorption , Tropical soil , Animal manure
Journal title :
Science of the Total Environment
Serial Year :
2012
Journal title :
Science of the Total Environment
Record number :
989735
Link To Document :
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