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Effects of dysprosium on the microbial microcosm
https://repo.qst.go.jp/records/67768
https://repo.qst.go.jp/records/67768e45b3758-7476-4e5e-9a3b-e5b5129b13cf
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2004-04-26 | |||||
| タイトル | ||||||
| タイトル | Effects of dysprosium on the microbial microcosm | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Fuma, Shoichi
× Fuma, Shoichi× Takeda, Hiroshi× Takaku, Yuichi× Hisamatsu, Shun\\'ichi× Kawabata, Zenichiro× 府馬 正一× 武田 洋 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Dysprosium (Dy) is one of rare earth elements used in advanced industries. The authors investigated effects of Dy on the cell densities in the aquatic microcosm consisting of flagellate algae Euglena gracilis as a producer, ciliate protozoa Tetrahymena thermophila as a consumer and bacteria Escherichia coli as a decomposer. At 0.1 mM Dy, no significant effect was observed. At 0.18 mM, the cell density of E. coli significantly decreased compared with controls, but recovered to the control level later. At 0.3 mM, E. coli died out. At 0.56 mM, T. thermophila and E. coli died out. At 1 mM, all species died out. This toxicity of Dy to the microcosm was similar to that of gadolinium, slightly lower than that of copper and nickel, and much higher than that of manganese. Some effects observed in the microcosm were different from those observed in the pure-culture systems. The authors will also discuss relationships between effects observed in the microcosm and speciation of Dy. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | SETAC Europe 14th Annual Meeting | |||||
| 発表年月日 | ||||||
| 日付 | 2004-04-22 | |||||
| 日付タイプ | Issued | |||||
