Chemical forms and extractability of iron in sediments of three contrasting lakes of China and UK
文献类型：期刊论文
| 作者 | Zhou, QX ; Gibson, CE ; Stewart, BM |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2003 |
| 卷号 | 15期号:6页码:728-733 |
| 关键词 | iron chemical form extractability lake sediment eutrophication |
| ISSN号 | 1001-0742 |
| 通讯作者 | Zhou, QX, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terrest Ecol Proc, Shenyang 110016, Peoples R China |
| 中文摘要 | Iron is a limiting factor for the eutrophication of lakes, especially those lakes that are enriched with phosphorus. Extractability of iron in sediments of West Lake and Taihu Lake in China and Lower Lough Erne in Northern Ireland of UK was comparatively investigated on the basis of analysing chemical forms of iron using different extractants. It was shown that extractable iron in sediments of the lakes was greatly different using various extractants. Reactive iron or easily released iron such as "active" iron oxides, total free iron oxide and water-soluble iron was not high, only accounting for 0.01%-0.15% of total iron. The efficiency of the extractants for exchangeable iron was decreased in the sequence 0.1 mol/L HCl much greater than DTPA + TEA mixed solution > 1 mol/L NH4OAc > 0.5 mol/L MgCl2 = 0.5 mol/L CaCl2. It seems that the complexion of iron by organic matter was not strong because the concentration of organically bound iron was significantly lower than the concentration it was forecasted. Extractable iron is not entirely consistent with or dependent on total iron in lake sediments. To a certain extent, phosphate can inhibit the release of iron in sediments of the lakes. The selection of extractants is thus the first key step to evaluate bioavailability of iron in lake sediments. |
| 学科主题 | Environmental Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000186365600002 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/55333]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhou, QX,Gibson, CE,Stewart, BM. Chemical forms and extractability of iron in sediments of three contrasting lakes of China and UK[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2003,15(6):728-733. |
| APA | Zhou, QX,Gibson, CE,&Stewart, BM.(2003).Chemical forms and extractability of iron in sediments of three contrasting lakes of China and UK.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,15(6),728-733. |
| MLA | Zhou, QX,et al."Chemical forms and extractability of iron in sediments of three contrasting lakes of China and UK".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 15.6(2003):728-733. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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