Effects of heavy metal ions Hg2+, Pb2+, Cd2+ and Cu2+ on the growth and PO4-P and NH4-N purification capacity of photo-synthetic bacterium Rhodopseumonas palustris were studied. When the concentration of Hg2+ at medium was 2×10-6mol·L-1, the growth rate of this strain became slow, and its growth was inhibited completely at concentration of Hg2+ of 4×10-6 mol·L-1. At the concentration of Cu2+ of 1×10-6 mol·L-1, its growth rate became slow. Its growth was inhibited entirely while concentration of Cu2+ was high up to 8×10-6mol·L-1 too. while the concentration of Cd2+ at medium was 4×10-5 mol·L-1, the lag phase of this strain was delayed, and the growth of this strain was inhibited completely while concentration of Cd2+ was 16×10-5 mol·L-1. But the growth rate of this strain was hardly influenced when the concentration of Pb2+ at medium was 8×10-4 mol·L-1. While the heavy metal ion at medium was below the concentration inhibiting the growth of this strain entirely, PO4-P and NH4-N purification capacity of this strain was hardly influenced.
周茂洪*, 王芸沪, 岑宇. Hg2+、Pb2+、Cd2+和Cu2+对沼泽红假单胞菌生长及净化氮、磷能力的影响[J]. , 2002, 21(1): 55-58.
Zhou Maohong, Wang Yunhu, Cen Yu. Effects of Hg2+, Pb2+ Cd2+ and Cu2+ on the growth and purification capacity of nitrogen and phosphorus of Rhodopseudomonas palustris. , 2002, 21(1): 55-58.
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