Effects of Cr(VI)on the growth of marine algae
Effects of Cr(VI)on the growth of marine algae
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发表时间：
2009
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通讯作者：
Zhang Yujie
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作者：
Zhang Yujie
采用分批培养法研究了Cr（Ⅵ）对8种海藻生长的影响，结果表明，高浓度Cr（Ⅵ）对8种海藻生长有抑制作用，低浓度Cr（Ⅵ）对8种海藻生长有抑制作用，高浓度Cr（Ⅵ）对8种海藻生长有抑制作用，低浓度Cr（Ⅵ）对8种海藻生长有抑制作用，高浓度Cr（Ⅵ）对8种海藻生长有抑制作用，低浓度Cr（Ⅵ）对8种海藻生长有抑制作用。（10 μg·dm-3）的Cr（VI）促进了角毛藻、扁藻和中肋骨条藻（Greville）Cleve.将Logistic生长模型与Lorentz方程和Gaussmann方程相结合，建立了Cr（Ⅵ）对海藻生长影响的生长模型，用Lorentz方程描述Cr（Ⅵ）对生长速率常数的影响，用Gaussmann方程描述Cr（Ⅵ）对生长速率常数的影响。模型拟合结果与实验数据吻合较好，相关系数为0.832 ~ 0.986，平均值为0.909。
The effects of Cr (Ⅵ) on the growth of 8 species of marine algae were investigated using batch culture experiments.The experimental results showed that while high concentrations of Cr (Ⅵ) inhibited the growth of 8 species of marine algae,a low concentration (10 μg·dm-3) of Cr (VI) promoted the growth of marine algae such as Chaetoceros curvisetus,Platymonas helgolanidica,and Skeletonema costatum (Greville) Cleve.A growth model was further developed to simulate the effect of Cr (Ⅵ) on the growth of marine algae by incorporating a logistic growth model with the Lorentz equation and the GaussAmp equation.In this model,the Lorentz equation was used to describe the effect of Cr (Ⅵ) on the growth rate constant while the GaussAmp equation describes the effect of Cr (Ⅵ) on the final biomass of algae.Results of model showed good fits to the experimental data and the correlation coefficients were from 0.832 to 0.986 with an average of about 0.909.