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    • 4. 发明授权
    • Method for determining biochemical oxygen demand
    • 确定生化需氧量的方法
    • US4350763A
    • 1982-09-21
    • US138121
    • 1980-04-07
    • Shuichi SuzukiIsao Karube
    • Shuichi SuzukiIsao Karube
    • G01N33/18
    • G01N33/1806Y10S435/817
    • The biochemical oxygen demand (BOD) of an aqueous liquid contaminated with organic matter is determined by contacting a sample solution with elementary oxygen and with immobilized microorganisms capable of aerobically metabolizing the organic matter and of thereby consuming the oxygen. The rate of oxygen consumption under otherwise uniform conditions is as precise a measure of BOD as the conventional five-day test, but is determined within less than two hours, usually less than 30 minutes. A membrane-type oxygen-sensitive electrode is employed for sensing the rate of oxygen consumption and generates an output signal which is readily correlated with the BOD of the tested liquid.
    • 用有机物质污染的含水液体的生物化学需氧量(BOD)是通过使样品溶液与基本氧接触的固体微生物和能够有机代谢有机物质并从而消耗氧气的固定化微生物来确定的。 在其他均匀条件下的氧消耗速率与常规五天试验一样精确地测量BOD,但是在不到两小时,通常少于30分钟内测定。 使用膜式氧敏电极来感测氧消耗的速率,并产生容易与被测液体的BOD相关的输出信号。