Analysis of veterinary antibiotic residues in swine wastewater and environmental water samples using optimized SPE-LC/MS/MS

Constructed wetlands with light expanded clay aggregates for agricultural wastewater treatment

“…This pharmaceutical is not efficiently removed by conventional wastewater treatments which results in its frequent detection in treated wastewaters and in water bodies of agricultural regions (Tong et al, 2009;Chen et al, 2012;Cavenati et al, 2012). Studies have shown that under a broad range of environmental conditions, tetracyclines can adsorb strongly to clays (Allaire et al, 2006;Avisar et al, 2010) which may be a good indication that a clay material-based CW, such as the present one with LECA support matrix, may provide efficient sorption mechanisms that can attain an efficient treatment of wastewaters contaminated with OTC.…”

Excretion masses and environmental occurrence of antibiotics in typical swine and dairy cattle farms in China

“…Chlortetracycline, oxytetracycline and tetracycline were found to be used in the feeds of the two swine farms, while other antibiotics including sulfamonomethoxine, doxycycline, trimethoprim, enrofloxacin, leucomycin and florfenicol were only found in the feeds from farm S3 (Table S7). High concentrations and frequencies of tetracyclines were also found in the manure and wastewater from other swine farms in China (Ben et al, 2008;Chen et al, 2012aChen et al, , 2012bPan et al, 2011;Tong et al, 2009;Wei et al, 2011;Zhao et al, 2010), implying frequent application of these antibiotics in swine breeding in China. Dewey et al (1999) has reported that tetracyclines such as tetracycline, chlortetracycline and oxytetracycline are often fed to all ages of pigs to improve growth and prevent diseases, but included more frequently in the feeds for immature swine than for mature swine.…”

Estimation of Residual Antibiotics in Pharmaceutical Effluents and their Fate in Affected Areas

“…4.5 L of wastewater sample from each sampling point was collected into amber glass bottles, stored on ice, and brought to the laboratory within 24 h. All samples were taken between 5 th January to 30 th 2013. Temperature and pH of each sample were noted at each site [16,34]. Any kind of fi ltration or preservation (except for storing on ice) was not done before transfer to the laboratory.…”

“…Tetracyclines and fl uoroquinolones are easily adsorbed by soils, sediments, and/or manure slurry [2,31]. Estimation in liquid samples is mostly connected to persistence and transport in the marine environment [30,[32][33][34].…”