Extraction of phosphorus in natural waters and sediments by ignition method
文献类型：期刊论文
| 作者 | Zhou, Y ; Zhang, FS; Yang, HS; Ma, XN
|
| 刊名 | CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
 |
| 出版日期 | 2002-07-01 |
| 卷号 | 30期号:7页码:861-864 |
| 关键词 | Ignition Method Recovery Phosphorus Phosphorus-containing Compounds Ashing Auxiliary Agents |
| ISSN号 | 0253-3820 |
| 文献子类 | Article |
| 英文摘要 | Phosphorus recoveries from selected inorganic and organic P-containing compounds after ignition with auxiliaries, such as MgSO4, Mg (NO3)(2), MgCl2, Mg (Ac)(2) and CaCl2 were studied. It was found that the phosphorus could not be completely recovered when most P-containing compounds were ignited with MgSO4 at temperature not higher than 500degreesC if the baked residue was extracted with 0.2 mol/L HCl for 30 min at 80degreesC or at room temperature. In contrast, MgCl2, Mg(Ac)(2) and CaCl2, as well as Mg(NO3)(2), could all yield complete P recoveries. We suggest that MgCl2 rather than MgSO4, which is usually used, should be utilized as ashing auxiliary agent in the P extraction by ignition method. Although Mg (NO3)(2) is a highly effective auxiliary agent, yet interference from MgSO4, danger of explosion, toxicity of nitrogen dioxide and more manipulation steps may limit its widespread utilization. It is suggested that if sediment is ignited with MgCl2, the extraction of residue with 0.2 mol/L HCl for 30 min at 80degreesC could give good result.; Phosphorus recoveries from selected inorganic and organic P-containing compounds after ignition with auxiliaries, such as MgSO4, Mg (NO3)(2), MgCl2, Mg (Ac)(2) and CaCl2 were studied. It was found that the phosphorus could not be completely recovered when most P-containing compounds were ignited with MgSO4 at temperature not higher than 500degreesC if the baked residue was extracted with 0.2 mol/L HCl for 30 min at 80degreesC or at room temperature. In contrast, MgCl2, Mg(Ac)(2) and CaCl2, as well as Mg(NO3)(2), could all yield complete P recoveries. We suggest that MgCl2 rather than MgSO4, which is usually used, should be utilized as ashing auxiliary agent in the P extraction by ignition method. Although Mg (NO3)(2) is a highly effective auxiliary agent, yet interference from MgSO4, danger of explosion, toxicity of nitrogen dioxide and more manipulation steps may limit its widespread utilization. It is suggested that if sediment is ignited with MgCl2, the extraction of residue with 0.2 mol/L HCl for 30 min at 80degreesC could give good result. |
| 学科主题 | Chemistry, Analytical |
| 语种 | 英语 |
| WOS记录号 | WOS:000177291200025 |
| 公开日期 | 2010-12-22 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/2825]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 作者单位 | Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Y,Zhang, FS,Yang, HS,et al. Extraction of phosphorus in natural waters and sediments by ignition method[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2002,30(7):861-864. |
| APA | Zhou, Y,Zhang, FS,Yang, HS,&Ma, XN.(2002).Extraction of phosphorus in natural waters and sediments by ignition method.CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,30(7),861-864. |
| MLA | Zhou, Y,et al."Extraction of phosphorus in natural waters and sediments by ignition method".CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 30.7(2002):861-864. |
入库方式： OAI收割
来源：海洋研究所
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