Aluminum speciation of coagulants with low concentration: Analysis by electrospray ionization mass spectrometry
文献类型：会议论文
| 作者 | Zhao, He; Liu, Huijuan; Qu, Jiuhui |
| 出版日期 | 2011 |
| 会议名称 | 6th International Conference on Interfaces Against Pollution (IAP 2010) |
| 会议日期 | MAY 16-19, 2010 |
| 会议地点 | Beijing, PEOPLES R CHINA |
| 关键词 | Electrospray ionization Aluminum speciation Coagulant Hydrolyzed species |
| 英文摘要 | Aluminum speciation of coagulants with low concentration was investigated in detail by electrospray ionization mass spectrometry (ESI-MS). In particular, comparison with (27)Al nuclear magnetic resonance ((27)Al NMR) and Ferron colorimetric method for aluminum speciation of coagulants was discussed. The results indicated that various hydrolyzed aluminum species (monomeric, dimeric, trimeric and tetrameric aluminum species), which could not be identified by other methods, appeared in ESI-MS spectra. Thus. ESI-MS method was much better for hydrolyzed aluminum species in low concentration. In this paper. sample cone voltage was an important operating parameter during ESI-MS detection, and optimum voltage was 70V. Too low (40V) or high (150V) sample cone voltage was not suitable for detecting all aluminum species. This study also evaluated the effects of coagulant concentration, aging, pH value and organic matter on aluminum species distribution. The results indicated that the distribution of hydrolyzed aluminum species at low concentration was largely dependent on the solution pH. At higher pH conditions, aging (8-12h) may influence aluminum hydrolysis. Additionally, after adding salicylic acid into coagulant solutions. speciation and stability for both Al(13) species and aluminum-salicylate complexes varied significantly at different pH values. (C) 2010 Elsevier B.V. All rights reserved. |
| ISBN号 | 0927-7757 |
| WOS记录号 | WOS:000289920200009 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24625]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, He,Liu, Huijuan,Qu, Jiuhui. Aluminum speciation of coagulants with low concentration: Analysis by electrospray ionization mass spectrometry[C]. 见:6th International Conference on Interfaces Against Pollution (IAP 2010). Beijing, PEOPLES R CHINA. MAY 16-19, 2010. |
入库方式： OAI收割
来源：生态环境研究中心
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