摘要
以日本岐阜县境内的长良川及其支流为对象,研究了河流浮游微生物对17β雌二醇(E2)的分解特性.结果表明:无论是在好氧还是在厌氧条件下,河流水系微生物均对E2有较好的分解作用,且好氧条件下的分解速率大于厌氧条件的.对于干流,其分解速率越往下游越大,而对于支流,则与其流域的土地利用、污水处理和排放情况密切相关.厌氧条件下E2浓度的半衰期为385.08～3.98 h,平均半衰期为100.6 h;而好氧条件下E2浓度的半衰期为31.79～2.30 h,平均半衰期仅为9.4 h.
Study was made on the degradation performance of 17β estradiol （E2） by planktonic microbe in the main and tributary streams of Nagara River in Gifu Prefecture, Japan. The result shows that under both the aerobic or anaerobic condition, the microbes in river system can degrade E2 well, and the aerobic degradation rate is higher than the anaerobic, The degradation rate in the main stream turns higher towards downstream, while in the tributary stream it seems to be closely related with land utilization, wastewater treatment and discharge within the catchment basin. Under anaerobic condition, the half life of E2 is 385.08 - 3.98 h with 100.6 h in average ; while under aerobic condition, the half life of E2 is 31.79 -2. 30 h with 9.4 h in average.
出处
《中国给水排水》
CAS
CSCD
北大核心
2005年第9期5-9,共5页
China Water & Wastewater
关键词
河流
浮游微生物
环境荷尔蒙
生物降解
动力学
river
planktonic microbe
environmental hormones
biodegradation
kinetics
