start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2015 dt-pub=20150620 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Adsorption and removal of strontium in aqueous solution by synthetic hydroxyapatite en-subtitle= kn-subtitle= en-abstract= kn-abstract=Hydroxyapatite (HAP) is a main mineral constituent of bone and tooth and has an outstanding biocompatibility. HAP is a possible sorbent for heavy metals in wastewater due to its high adsorption capacity and low water solubility. We developed a removal system of 90Sr from aqueous solution by HAP column procedure. More than 90 % of 90Sr was adsorbed and removed from the 90Sr containing solution. Divalent cations, Ca2+, had little effect on the removal of 90Sr up to a concentration of 1 mmol L−1. This clearly indicates that the HAP column technique is advantageous with respect to the capacity to adsorb 90Sr from water present in the environment. en-copyright= kn-copyright= en-aut-name=NishiyamaYuichi en-aut-sei=Nishiyama en-aut-mei=Yuichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=HanafusaTadashi en-aut-sei=Hanafusa en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=YamashitaJun en-aut-sei=Yamashita en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YamamotoYoko en-aut-sei=Yamamoto en-aut-mei=Yoko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OnoToshiro en-aut-sei=Ono en-aut-mei=Toshiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Radiation Research, Advanced Science Research Center, Okayama University affil-num=2 en-affil= kn-affil=Department of Radiation Research, Advanced Science Research Center, Okayama University affil-num=3 en-affil= kn-affil=Institute of Plant Science and Resources, Okayama University affil-num=4 en-affil= kn-affil=Institute of Plant Science and Resources, Okayama University affil-num=5 en-affil= kn-affil=Department of Radiation Research, Advanced Science Research Center, Okayama University en-keyword=Strontium kn-keyword=Strontium en-keyword=Hydroxyapatite kn-keyword=Hydroxyapatite en-keyword=Adsorption kn-keyword=Adsorption en-keyword=Desorption kn-keyword=Desorption en-keyword=Divalent cation kn-keyword=Divalent cation END start-ver=1.4 cd-journal=joma no-vol=2 cd-vols= no-issue=2 article-no= start-page=181 end-page=190 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=1994 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=タバコ懸濁培養細胞におけるアルミニウムの二価鉄、銅およびカドミウム毒性に対する影響 kn-title=Effects of Aluminum on the Toxicity of Iron(II), Copper and Cadmium in Suspension-cultured Tobacco Cells en-subtitle= kn-subtitle= en-abstract=二価鉄[Fe(Ⅱ)]、銅(Cu)およびカドミウム(Cd)の細胞毒性に対するアルミニウム(Al)の効果について検討した。120μM AlCl3の存在もしくは非存在下において、対数増殖期の細胞をFeSO4,CuSO4,CdCl2で各々18時間、pH4.0で処理した。処理後の生存率は、処理後の細胞を増殖させたのちに、未処理細胞(コントロール)の増殖に対する金属で処理した細胞の相対増殖率で求めた。Al,Fe(Ⅱ),Cdの単独処理による増殖阻害は、各々300μM、200μM、500μMの濃度まで観察されなかったが、Cuでは15μMで大きく阻害された。このように、タバコ細胞は相対的にAl、Fe(Ⅱ)、Cdには感受性が低く、Cuには感受性が高かった。細胞をFe(Ⅱ)およびAlの両方で処理すると、増殖は著しく阻害され、AlおよびFeの細胞内含量も相乗的に増加した。Cuで処理した場合、Alを加えることにより逆に増殖率が増加した。しかし、細胞内Cu含量はAlの影響を受けなかった。Cd処理の場合、Alを加えてもCdによる増殖阻害の程度は変わらなかった。このように、AlはFe(Ⅱ)、Cu、Cd毒性に対して各々異なる相互作用を示し、Fe(Ⅱ)に対し、相乗効果を、Cuに対しては拮抗的な阻害を示したが、Cdに対してはみかけ上効果がなかった。 kn-abstract=The effects of aluminum (Al) on the cytotoxicity of ferrous iron (Fe(Ⅱ)), copper(Cu) and cadmium(Cd) were studied. Log-phase cells were treated with either FeSO4,CuSO4, or CdCl2 in the presence or absence of AlCl3(120μM) for 18h at pH 4.0. After the treatment, the viability was determined as relative growth of the metal-treated cells to the untreated control cells during the post-treated culture. A single treated with either Al, Fe(Ⅱ) or Cd did not inhibit the growth at the metal concerntrations up to 300 μM, 200 μM and 500 μM, respectively, whereas the growth was markedly inhibited at 15 μM Cu. Thus,the cells were relatively insensitive to Al, Fe(Ⅱ) and Cd and sensitive to Cu. When cells were treated with both Fe(Ⅱ)(120 μM)and Al(120μM), the growth was significantly inhibited and the cellular contents of both Al and Fe increased synergistically. After the treatment with Cu(0 to 10 μM) with or without Al, the cells grew more vigorously when they were treated in the presence of Al, althrouh the Cu content of the cells were not alterd by Al. The presence of Al during the treatmemt with Cd(0 to 2 μM) had no effect on the degree of growth inhibition by Cd. Thus, Al interacts with the toxicity of Fe(Ⅱ), Cu and Cd in different manners; synergistic with Fe(Ⅱ), antagonistic with Cu and apparently no effeco on Cd. en-copyright= kn-copyright= en-aut-name=YamamotoYoko en-aut-sei=Yamamoto en-aut-mei=Yoko kn-aut-name=山本洋子 kn-aut-sei=山本 kn-aut-mei=洋子 aut-affil-num=1 ORCID= en-aut-name=ChangYi-Chieh en-aut-sei=Chang en-aut-mei=Yi-Chieh kn-aut-name=張藝潔 kn-aut-sei=張 kn-aut-mei=藝潔 aut-affil-num=2 ORCID= en-aut-name=OnoKanji en-aut-sei=Ono en-aut-mei=Kanji kn-aut-name=小野寛治 kn-aut-sei=小野 kn-aut-mei=寛治 aut-affil-num=3 ORCID= en-aut-name=MatsumotoHideaki en-aut-sei=Matsumoto en-aut-mei=Hideaki kn-aut-name=松本英明 kn-aut-sei=松本 kn-aut-mei=英明 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 affil-num=4 en-affil= kn-affil=岡山大学 en-keyword=Aluminum kn-keyword=Aluminum en-keyword=Antagonistic kn-keyword=Antagonistic en-keyword=Nicotiana tabacum kn-keyword=Nicotiana tabacum en-keyword=Suspension culture kn-keyword=Suspension culture en-keyword=Synergistic kn-keyword=Synergistic END