Effect of Swine Manure on Sulfamethazine Degradation in Aerobic and Anaerobic Soils

摘要: Degradation and fate of sulfamethazine (SMZ) were determined under aerobic anaerobic conditions in soil with without swine manure amendment. For both conditions, SMZ disappeared rapidly during the first 7 days followed by slow disappearance which may indicate that had become more persistent less available. soils receiving 100 mg/kg SMZ, percent remaining after 63 days between 25 60 %. Depending on initial concentration, estimated half-lives for incubations ranged from 1.2 to 6.6 2.3 days than 63 days, respectively. Addition (0.054 g/g soil) did not significantly affect SMZ. Inhibitory effects microbial respiration observed unamended at concentrations 50 mg/kg or higher, but only transient inhibitory found soil. Five 22 % 14C[phenyl]-SMZ added extracted end while 70 91 % 14C converted bound (non-extractable) forms amended Only 0.1 1.5 % 14C-SMZ was mineralized 14CO2. Disappearance sterilized completely halted indicating possible contribution abiotic processes