溶液电势可简单有效地表征碱性介质中Cr(VI)还原菌Achromobacter sp.CH-1的生长情况.Achromobacter sp.CH-1培养过程中,溶液电势随着细菌数的增加而降低,溶液电势与细菌数对数呈线性相关,线性方程中常数a、b与细菌的种类、批量、数量和细菌的生长环境有关.初始pH为10、初始细菌数为6.55?107 cell/mL时培养CH-1菌,溶液电势与细菌数的对数值的相关曲线可分两段表征.不同初始pH与不同细菌数条件下CH-1菌的生长情况不同,但细菌的生长量与溶液电势直接相关.
A simple and effective method has been developed to reflect the growth of bacteria CH-1 via the potential of the solution. The results indicate that during the bacterial cultivation, the biomass increases and the potential of the solution decreases over time. The relationship between biomass and potential of the solution could be expressed by the equation with constants of a and b which are all related to species, batch, number, and growth environment of bacterial. When the initial pH value is 10 and the initial biomass is 6.55×107 cell/mL, the correlated equation of the biomass and the potential of the solution could be divided into two segments. The growth of bacteria CH-1 is different under various experimental conditions, but the biomass is directly related to the potential of the solution regardless of the conditions of different initial pH values and bacteria number.
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