Scavenging of Cd through Fe/Mn oxides within natural surface coatings
文献类型：期刊论文
| 作者 | Li, Y; Huang, GH; Zhang, BY; Guo, SH; Li, Y, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2006 |
| 卷号 | 18期号:6页码:1199-1203 |
| 关键词 | Cadmium Scavenging Natural Surface Coatings Selective Extraction Iron Oxides Manganese Oxides |
| ISSN号 | 1001-0742 |
| 英文摘要 | The dynamics of Cd scavenging from solutions by Fe/Mn oxides in natural surface coatings (NSCs) was investigated under laboratory conditions. Selective extraction methods were employed to estimate the contributions of Fe/Mn oxides, where hydroxylamine hydrochloride (0.01 mol/L NH2OH center dot HCI + 0.01 mol/L HNO3), sodium dithionite (0.4 mol/L Na2S2O4) and nitric acid (10% HNO3) were used as extraction reagents. The Cd scavenging was accomplished with developing periods of the NSCs (totally 21 data sets). The resulting process dynamics fitted well to the Elovich equation, demonstrating that the amount of Cd scavenged was proportional to the increments of Fe/Mn oxides that were accumulated in the NSCs. The amount of Cd bound to Fe oxides (M-cdFe) and Mn oxides (M-cdMn) could be quantified by solving two equations based on the properties of two extraction reagents. The amount of Cd scavenged by Fe/Mn oxides could also be estimated using M-cdFe and M-cdMn divided by the total amounts of Fe and Mn oxides in the NSCs, respectively. The results indicated that the Cd scavenging by Fe/Mn oxides was dominated by Fe oxides, with less roles attributed to Mn oxides. The estimated levels of Cd scavenging through Fe and Mn oxides agreed well with those predicted through additive-adsorption and linear-regression models. |
| 学科主题 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000242222400028 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54821]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Li, Y, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Y,Huang, GH,Zhang, BY,et al. Scavenging of Cd through Fe/Mn oxides within natural surface coatings[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2006,18(6):1199-1203. |
| APA | Li, Y,Huang, GH,Zhang, BY,Guo, SH,&Li, Y, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China.(2006).Scavenging of Cd through Fe/Mn oxides within natural surface coatings.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,18(6),1199-1203. |
| MLA | Li, Y,et al."Scavenging of Cd through Fe/Mn oxides within natural surface coatings".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 18.6(2006):1199-1203. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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