摘要
本研究选用性能优良的微生物，采用夹层法制备微生物膜并解决了其菌体易流失的问题，与氧电极组装成BOD传感器。用该传感器测定BOD，其线性响应范围2～50mg／L；响应时间不超过6min；传感器使用寿命超过2个月；测定环境标准样平均误差-1．6％，变异系数3．8％；与传统的BOD_5法同步测定废水样品相关性良好。
A microbial membrane was made by immobilized cells inside a double-layeredmembrane. The cells could not be washed away,which owed a lot to a special process. BODmicrobial sensor consists of microbial membrane and an oxygen electrode. By using the sensor,the BOD of a sample solution can be measured within 6 minutes. The relationship between electric current decrease and BOD is linear in the range of 2-50mg/L. When it wasused to measure the BOD of the environmental standard samples,the relative standard deviation was about 3. 8% with the mean error about- 1. 6 %. The output of the sensor is constantfor over 2 months,and it was well interrelated to what determined by using conventionalBOD5 analysis method.
出处
《城市环境与城市生态》
CAS
CSSCI
CSCD
1998年第4期46-49,共4页
Urban Environment & Urban Ecology
基金
天津市青年科学基金
