Study on improving the turbidity measurement of the absolute coagulation rate constant
文献类型：期刊论文
| 作者 | Sun ZW(孙祉伟) ; Liu J(刘捷); Xu SH(徐升华)
|
| 刊名 | Langmuir
 |
| 出版日期 | 2006 |
| 卷号 | 22期号:11页码:4946-4951 |
| 通讯作者邮箱 | sunzw@imech.ac.cn |
| 关键词 | Dynamic Light-Scattering Microscopic Approach Colloidal Stability Aggregation Particles Sedimentation Index Sols |
| ISSN号 | 0743-7463 |
| 通讯作者 | Sun, ZW (reprint author), Chinese Acad Sci, Inst Mech, NML, Beijing 100080, Peoples R China. |
| 中文摘要 | The existing theories dealing with the evaluation of the absolute coagulation rate constant by turbidity measurement were experimentally tested for different particle-sized (radius = a) suspensions at incident wavelengths (lambda) ranging from near-infrared to ultraviolet light. When the size parameter alpha = 2 pi a/lambda > 3, the rate constant data from previous theories for fixed-sized particles show significant inconsistencies at different light wavelengths. We attribute this problem to the imperfection of these theories in describing the light scattering from doublets through their evaluation of the extinction cross section. The evaluations of the rate constants by all previous theories become untenable as the size parameter increases and therefore hampers the applicable range of the turbidity measurement. By using the T-matrix method, we present a robust solution for evaluating the extinction cross section of doublets formed in the aggregation. Our experiments show that this new approach is effective in extending the applicability range of the turbidity methodology and increasing measurement accuracy. |
| 类目[WOS] | Chemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Materials Science |
| 关键词[WOS] | DYNAMIC LIGHT-SCATTERING ; MICROSCOPIC APPROACH ; COLLOIDAL STABILITY ; AGGREGATION ; PARTICLES ; SEDIMENTATION ; INDEX ; SOLS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000237593000014 |
| 公开日期 | 2009-08-03 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/33849]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Sun ZW,Liu J,Xu SH. Study on improving the turbidity measurement of the absolute coagulation rate constant[J]. Langmuir,2006,22(11):4946-4951. |
| APA | 孙祉伟,刘捷,&徐升华.(2006).Study on improving the turbidity measurement of the absolute coagulation rate constant.Langmuir,22(11),4946-4951. |
| MLA | 孙祉伟,et al."Study on improving the turbidity measurement of the absolute coagulation rate constant".Langmuir 22.11(2006):4946-4951. |
入库方式： OAI收割
来源：力学研究所
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