Seasonal occurrence of antibiotics and a beta agonist in an agriculturally-intensive watershed. (October 2015)

• Record Type: Journal Article
• Authors: Jaimes-Correa, Juan C.; Snow, Daniel D.; Bartelt-Hunt, Shannon L.
• Is Part Of: Environmental pollution. Volume 205(2015)
• Page Start: 87
• Page End: 96
• Publication Date: 2015-10
• Subjects: Veterinary pharmaceuticals -- Agriculture -- POCIS; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2015.05.023
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: We evaluated the occurrence of 12 veterinary antibiotics and a beta agonist over spatial and temporal scales in Shell Creek, an intensively agricultural watershed in Nebraska, using Polar Organic Chemical Integrative Samplers (POCIS). Twelve pharmaceuticals were detected with concentrations ranging from 0.0003 ng/L to 68 ng/L. The antibiotics measured at the highest time-weighted average concentrations were lincomycin (68 ng/L) and monensin (49 ng/L), and both compounds were detected at increased concentrations in summer months. Analysis of variance indicates that mean concentrations of detected pharmaceuticals have no significant (p > 0.01) spatial variation. However, significant temporal differences (p < 0.01) were observed. This study demonstrates the utility of passive samplers such as POCIS for monitoring ambient levels of pharmaceuticals in surface waters. Highlights: Passive samplers were used to evaluate veterinary pharmaceuticals in an agricultural watershed. Monensin and lincomycin were detected at the highest TWA concentrations. Significantly higher concentrations were detected in summer months. Pulses of antibiotics correspond with rainfall-runoff events. Abstract : The spatial and temporal differences in the occurrence of thirteen veterinary pharmaceuticals was evaluated in an intensively agricultural watershed.