BOD (biochemical oxygen demand) is one of the most important organic water pollution indexes. However the BOD measurement requires a five-day incubation period, and the precision of the results depend on the skill of the operator. We have studied a microbial electrode consisting of immobilized living whole cell of yeast, and an oxygen electrode in order to conduct quick estimation of BOD. We developed a BOD quick estimation system (BOD sensor) and commercialized it in 1983 for the first time in the world. This method was established as JIS K 3602 in 1990. This time, we newly developed a BOD sensor for on-site-measurement which can automatically monitor BOD every 30-60 minutes. This BOD sensor can be operated for 2-weeks without any maintenance. In this paper, the outline and the characteristics of this BOD sensor are reported.
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机译：BOD（生物化学需氧量）是最重要的有机水污染指标之一。 然而，BOD测量需要五天的孵化期，并且结果的精度取决于操作员的技能。 我们已经研究了由酵母固定的活细胞和氧电极组成的微生物电极，以便进行快速估计BOD。 我们开发了一个BOD快速估计系统（BOD传感器），并在世界上第一次在1983年在1983年商业化。 该方法成立于1990年的JIS K 3602。这次，我们新开发了用于现场测量的BOD传感器，可以每30-60分钟自动监测BOD。 该BOD传感器可以在没有任何维护的情况下操作2周。 在本文中，报道了该BOD传感器的轮廓和特性。
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