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KMID : 1024520020110030183
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Journal of the Environmental Sciences
2002 Volume.11 No. 3 p.183 ~ p.189
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Effect of metals(Cd ＆ Zn) and its nitrogen compounds on growth of bacteria isolated from the three tributaries and lower reach(Mulgum) of the Nakdong River
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Park Jae-Rim
Son Yoen-Ju
Ha Kyong
Park Jung-Chul
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Abstract
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Investigation was carried out to observe the dominant bacteria and the effect of metals(Cd ＆ Zn) and its nitrate compound on growth of bacteria isolated from the three tributaries and lower reach of the Nakdong River. Mean CFU(log) level was highest in Kumho River(8.30 CFU), Nam River, Hwang River, and Mulgum followed. Staphylococcus xylosus, Staph. lentus, Pasteurella pneumotropica, Aeromonas hydrophilla were dominant species in each study site. Cadmium powder and Zinc powder showed strong effect to inhibit the growth of Micrococcus spp., Pasteurella pneumotropica, Aeromonas hydrophilla. But, nitrate compounds of Cd and Zn(Cd(NO)4, Zn(NO)6) did not clearly show the strong effect to inhibit the growth of dominants.
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KEYWORD
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bacteria, Cd, Nakdong River, Staphylococcus lentus, Zn
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