| Budget Amount *help |
¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2010: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2009: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2008: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
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| Research Abstract |
The effects of coexisting heavy metals on the survival of water insect and attached algae were investigated in the laboratory experiments. The LC_<50> values of Al, Cu and Cd for Epeorus were obtained. Coexisting Cu and Cd showed an antagonistic effect in low toxicity equivalence quantity and synergistic effect in high quantity. Polynuclear hydroxyl-Al accelerated the decay of Nizschia palea (diatom) and Chlorella vulgaris (green algae). The toxicity of coexisting two metals (Al, Zn, Cu or Cd) to algae was demonstrated.
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