Chemical contaminants in feedlot wastes: Concentrations, effects and attenuation

Simultaneous determination of human and veterinary antibiotics in various environmental matrices by rapid resolution liquid chromatography–electrospray ionization tandem mass spectrometry

“…Target antibiotic compounds were selected mainly based on their usages in human and animals in China and the United States as well as their environmental behaviors [3,24,[54][55][56]. Target standards (sulfapyridine (SPD), sulfadiazine (SDZ), sulfamethazine (SMZ), sulfamethoxazole (SMX), sulfacetamide (SCT), sulfisoxazole (SX), sulfadimethoxine (SDM), sulfathiazole (STZ), sulfachlorpyridazine (SCP), sulfamonomethoxine (SMM), sulfameter (SM), sulfanilamide (SA), sulfaguanidine (SG), sulfadoxine (SDO), sulfaquinoxaline (SQX), trimethoprim (TMP), ormetoprim (OMP), oxytetracycline (OTC), tetracycline (TC), chlortetracycline (CTC), doxycycline (DC), methacycline (MT), norfloxacin (NFX), ciprofloxacin (CFX), ofloxacin (OFX), lomefloxacin (LFX), enrofloxacin (EFX), fleroxacin (FL), danofloxacin (DAN), pefloxacin (PEF), marbofloxacin (MAR), difloxacin (DIF), sarafloxacin (SAR), carbadox (CAR), oleandomycin (ODM), leucomycin (LCM), clarithromycin (CTM), florfenicol (FF), chloramphenicol (CAP), lincomycin (LIN), bacitracin (BACI), salinomycin (SAL), monensin (MON), ceftiofur (CEFT), cloxacillin (CLOX) and novobiocin (NOV)) were purchased from Dr. Ehrenstorfer GmbH (Germany).…”

Environmental (anti-)androgenic chemicals affect germinal vesicle breakdown (GVBD) of Xenopus laevis oocytes in vitro

“…Trenbolone, one of AAS, is widely used as a growth promoter in animal agriculture. Some studies investigated the levels of trenbolone in wastewater, soil and solid waste in feedlots (Khan et al, 2008;Qu et al, 2012). Trenbolone was also found in the receiving environment of feedlot wastewater and general environment (Gall et al, 2011;Khan and Lee, 2012;Liu et al, 2011).…”

Sorption of estrone and estrone‐3‐sulfate from CaCl2 solution and artificial urine in pastoral soils of New Zealand

“…For example, Isobe et al [4] reported estrone (E1) concentrations of 3.4 to 6.6 ng/L in river samples from Japan, and Noppe et al [5] found E1 concentrations to range from ,1 to 10 ng/L in a European estuary over the course of two years. The major sources for estrogens in the environment are animal [6][7][8] as well as medical and household wastes [9].…”