| 用电子自旋探针研究水泥固化土壤中镉离子的反应 |
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| 引用本文： | 王晓钧,守屋政彦,冈田能彦,杨南如.用电子自旋探针研究水泥固化土壤中镉离子的反应[J].环境科学学报,2000,20(5):528-532. |
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| 作者姓名： | 王晓钧 守屋政彦 冈田能彦 杨南如 |
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| 作者单位： | 南京化工大学材料科学与工程学院!南京210009(王晓钧，杨南如)，日本国太平洋セメント(株)中央研究所(守屋政彦，冈田能彦) |
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| 摘 要： | 应用电子自旋探针（Ｅｌｅｃｔｏｒｏｎ ｓｐｉｎ ｐｒｏｂｅ，简ＥＳＰ）Ｍｎ＾２＋离子的超精细结构（ｈｙｐｅｒｆｉｎｅ ｓｔｒｕｃｔｕｒｅ，简称ｈｆｓ），揭示了水泥固化土壤中Ｃｄ＾２＋离子的化学反应，研究发现：由于水泥水化产生高的ＰＨ值，Ｃｄ＾２＋离子与ＯＨ＾－离子反应生成Ｃｄ（ＯＨ）２沉‘当有ＣＯ２气体存在时，Ｃｄ＾２＋离子会与ＣＯ２和水泥水化的ＯＨ＾－离子反应生成ＣｄＣＯ３、Ｃｄ（ＯＨ）２，这些
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| 关 键 词： | 镉 ESR 水泥 土壤污染 固化 土壤监测 |
| 收稿时间： | 9/8/1999 12:00:00 AM |
| 修稿时间： | 1999-09-08 |
Studies on reactions of Cd2+ in soil fixed by cement using electron spin probe |
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| WANG Xiaojun,Masahiko Moriy,Yoshihiko Okada and YANG Nanru.Studies on reactions of Cd2+ in soil fixed by cement using electron spin probe[J].Acta Scientiae Circumstantiae,2000,20(5):528-532. |
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| Authors: | WANG Xiaojun Masahiko Moriy Yoshihiko Okada and YANG Nanru |
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| Institution: | College of Material Science and Engineering, Nanjing University of Chemical Technology, Nanjing 210009,Central Research Laboratory, Taiheiyo Cement Corp., Sakurashi, Chiba Prefecture, 285 0802, Japan,Central Research Laboratory, Taiheiyo Cement Corp., Sakurashi, Chiba Prefecture, 285 0802, Japan and College of Material Science and Engineering, Nanjing University of Chemical Technology, Nanjing 210009 |
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| Abstract: | The chemical reactions of Cd 2 in soil fixed by cement were brought out by the of electron spin probe (esp)\|Mn 2 ion's hyperfine structure (hfs).The research showed that Cd 2 ion reacts with OH\ - ion to form sediment Cd(OH)\-2 under high pH value condition which produced by cement hydration.Under the conditions of CO\-2 Cd 2 ion reacts with CO\-2 and OH\ - form CdCO\-3 and Cd(OH)\-2.These reactions are detected by the change of Mn 2 hfs in ESR spectra.Iron ion is not suitable for electron spin probe research,because there are no hfs in ESR spectra sach as Mn 2 . |
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| Keywords: | cadmium electron spinning resonance (ESR) electron spin probe(ESP) cement soil |
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