Determination of strongly reducing substances in sediment
文献类型：期刊论文
| 作者 | Li, QM; Bi, SP; Ji, GL |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2003-12-15 |
| 卷号 | 37期号:24页码:5727-5731 |
| ISSN号 | 0013-936X |
| 通讯作者 | Li, QM() |
| 英文摘要 | Reducing substances in sediments play an important role in regulating the chemical and biological status of the sediment. Strongly reducing substances are the most active part of them, and are difficult to measure directly. In this work, we have developed a method for their determination based on the oxidation by Fe(III). Then, the produced Fe(II) was determined by colorimetry, using 2,2'-bipyridine as the chelating agent. Prior to determination, these substances were extracted from the sediment by M acetic acid. The whole process was carried out in a closed system, so that oxidation of Fe(II) and reducing substances by atmospheric oxygen could be avoided. The calibration curve between absorbance and Fe(II)-chelate concentration in extract was linear. When ascorbic acid was added to the extract, the recovery was larger than 94.0%. The effect of surplus Fe(III) on the result was discussed. With the proposed method, the concentration of strongly reducing substances in sediment samples from Dianchi Lake of China was measured with good reproducibility. |
| 收录类别 | SCI |
| WOS关键词 | EXTRACTION TECHNIQUES ; LANDFILL LEACHATE ; AQUIFER SEDIMENTS ; IRON ; REDUCTION ; SOILS ; MANGANESE ; KINETICS ; SULFIDE ; FE(III) |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| WOS类目 | Engineering, Environmental ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000187248000034 |
| 出版者 | AMER CHEMICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559242 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Li, QM |
| 作者单位 | 1.Nanjing Univ, Dept Chem, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, QM,Bi, SP,Ji, GL. Determination of strongly reducing substances in sediment[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2003,37(24):5727-5731. |
| APA | Li, QM,Bi, SP,&Ji, GL.(2003).Determination of strongly reducing substances in sediment.ENVIRONMENTAL SCIENCE & TECHNOLOGY,37(24),5727-5731. |
| MLA | Li, QM,et al."Determination of strongly reducing substances in sediment".ENVIRONMENTAL SCIENCE & TECHNOLOGY 37.24(2003):5727-5731. |
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来源：南京土壤研究所
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