A strain of yeast , which can endure high osmotic pressure , was used as the sensitive material of the microbial BOD sen2 sor. PVA gel beads immobilization method was used. Typical response times of the BOD sensor were 5~15min , and the results show that correlation of the calibration curve is good. The used time and the keep method and the response to the high molecular or2 ganic pollutants were also studied in the experiment .Key words : BOD ;biosensor ; yeast ;monitoring
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