2価鉄によるクワ苗の6価クロム障害の軽減効果
スポンサーリンク
概要
- 論文の詳細を見る
Abatement of the obstruction by Cr<SUP>6+</SUP> to the mulberry growth was significant due to the addition of Fe<SUP>2+</SUP> into the hydroponic solution. Compared with the blank samples, the visibleobstruction to the mulberry growth was severe, slight and invisible corresponding to thecharged concentration ratios of Fe<SUP>2+</SUP> / Cr<SUP>6+</SUP>, 1/1, 3/1 and 5/1 (w/w), respectively. Meanwhile, the factors such as the shoot length, number of leaf number, chlorophyll concentration, dry weight growth, relative growth rate (RGR) and net assimilation rate (NAR) of mulberry were also affected significantly by adding Fe<SUP>2+</SUP>. These data supported the results obtained by the visual observation. Therefore, it was considered that the abatement of Cr6+ obstruction to the mulberry growth was probably resulted from two factors. The first one is that Cr6+ was reduced to Cr<SUP>3+</SUP>, which lightly obstructed the mulberry growth, due to the addition of Fe<SUP>2+</SUP>. The second one is that the residue of Cr<SUP>6+</SUP> was just kept in the mulberry root after absorption, because the distribution of Cr<SUP>6+</SUP> in the organs showed that a small amount of Cr<SUP>6+</SUP> immigrated to the organs above the ground (the concentrations of Cr in the stern and the leaf was much lower than those without adding Fe<SUP>2+</SUP>). On the other hand, more than 3 times weight of Fe<SUP>2+</SUP> to Cr6+shouId be required for thoroughly abating the obstruction of Cr<SUP>6+</SUP>..Key words: divalent iron ion, hexavalent chromium ion, mulberry, growth obstruction, ameliorative effects
- 日本環境毒性学会の論文
日本環境毒性学会 | 論文
- ミジンコ致死試験による農業地帯を流下する河川水の毒性評価
- バイカルアザラシCYP1A1/1A2 cDNAの同定およびダイオキシン類蓄積濃度と各mRNA発現量の関係 (第10回バイオアッセイ研究会・日本環境毒性学会合同発表会奨励賞授賞研究要旨)
- 山梨県内の河川に生息するコイの肝膵臓中メタロチオネイン量
- 環境汚染バイオマーカーとしてのメタロチオネインの有用性 (特集 環境影響評価のバイオマーカー)
- 酸素発生速度に基づく迅速な藻類毒性試験