Bioavailability of cadmium adsorbed on various oxides minerals to wetland plant species Phragmites australis
文献类型：期刊论文
| 作者 | Wang, H; Jia, YF; Wang, SF; Zhu, HJ; Wu, X; Jia, YF, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2009 |
| 卷号 | 167期号:1-3页码:641-646 |
| ISSN号 | 0304-3894 |
| 关键词 | Cadmium Speciation Oxides Adsorption Desorption Bioavailability |
| 英文摘要 | The bioavailability of heavy metals strongly depends on their speciation in the environment. The effect of different chemical speciations of cadmium ions (i.e. adsorbed on different oxide minerals) on its bioavailability to wetland plant Phragmites australis was studied. Goethite, magnetite, gibbsite, alumina, and manganese oxide were chosen as representatives of metal (hydr)oxides commonly present in sediment. The cultivar system with Hoagland solution as nutrition supply, and single metal oxide with adsorbed Cd as contaminant was applied to study Cd accumulation by R australis. The bioaccumulation degree in root after the 45-day treatment followed the order: Al(OH)(3) > Al2O3 > Fe3O4 > MnO2 > FeOOH. The concentration of Cd in stem and leaf followed a similar order although it was considerably lower than that in root. Low-molecular-weight organic acids (LMWOAs), acetic acid, malic acid and citric acid were used to evaluate the desorbability of Cd from different oxides, which can be indicative of Cd-oxide bonding strength and Cd bioavailability. Desorption of Cd by acetic acid and malic acid followed the order: Al(OH)(3) > Fe3O4 > Al2O3 > FeOOH > MnO2, while by citric acid: Al(OH)(3) >= Al2O3 > Fe3O4 > FeOOH > MnO2. This was consistent with the Cd accumulation degree in the plant. Cd adsorbed on Al(OH)(3) was the most easily desorbable species and most bioavailable to P. australis among the oxide minerals. whereas MnO2 adsorbed Cd was least desorbable by LMWOAs hence constituted the least bioavailable Cd species adsorbed on the oxide minerals. (C) 2009 Elsevier B.V. All rights reserved. |
| 学科主题 | Engineering ; Environmental ; Civil ; Engineering ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000267267000091 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54113]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Jia, YF, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, H,Jia, YF,Wang, SF,et al. Bioavailability of cadmium adsorbed on various oxides minerals to wetland plant species Phragmites australis[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,167(1-3):641-646. |
| APA | Wang, H,Jia, YF,Wang, SF,Zhu, HJ,Wu, X,&Jia, YF, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, 72 Wenhua Rd, Shenyang 110016, Peoples R China.(2009).Bioavailability of cadmium adsorbed on various oxides minerals to wetland plant species Phragmites australis.JOURNAL OF HAZARDOUS MATERIALS,167(1-3),641-646. |
| MLA | Wang, H,et al."Bioavailability of cadmium adsorbed on various oxides minerals to wetland plant species Phragmites australis".JOURNAL OF HAZARDOUS MATERIALS 167.1-3(2009):641-646. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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