Optical Factors Determined by the T-matrix Method in Turbidity Measurement of Absolute Coagulation Rate Constants

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	Optical Factors Determined by the T-matrix Method in Turbidity Measurement of Absolute Coagulation Rate Constants
	Xu SH(徐升华); Liu J(刘捷); Sun ZW(孙祉伟)
刊名	Journal of Colloid and Interface Science
	2006
通讯作者邮箱	sunzw@imech.ac.cn
卷号	304 期号:1 页码:107-114
ISSN号	0021-9797
通讯作者	Sun, ZW (reprint author), Chinese Acad Sci, Inst Mech, NML, Beijing 100080, Peoples R China.
中文摘要	Turbidity measurement for the absolute coagulation rate constant of suspensions has been extensively adopted because of its simplicity and easy implementation. A key factor to derive the rate constant from experimental data is how to theoretically evaluate the so-called optical factor involved in calculating the extinction cross section of doublets formed in the aggregation. In a previous paper, we have shown that compared with other theoretical approaches, the T-matrix method provides a robust solution to this problem and is effective in extending the applicability range of the turbidity methodology as well as increasing measurement accuracy. This paper will provide a more comprehensive discussion about the physical insight of using the T-matrix method in turbidity measurement and associated technical details. In particular, the importance of ensuring the correct value for the refractive indices for colloidal particles and the surrounding medium used in the calculation is addressed because the indices generally vary with the wavelength of the incident light. The comparison of calculated results with experiments shows that the T-matrix method can correctly calculate optical factors even for large particles, whereas other existing theories cannot. In addition, the calculated data of the optical factor by the T-matrix method for a range of particle radii and incident light wavelengths are listed.
学科主题	力学
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	AXIALLY-SYMMETRICAL PARTICLES ; RANDOMLY ORIENTED BISPHERES ; LIGHT-SCATTERING ; CROSS-SECTIONS ; INDEX
收录类别	SCI
语种	英语
WOS记录号	WOS:000241593100014
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/17260]
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	Xu SH,Liu J,Sun ZW. Optical Factors Determined by the T-matrix Method in Turbidity Measurement of Absolute Coagulation Rate Constants[J]. Journal of Colloid and Interface Science,2006,304(1):107-114.
APA	徐升华,刘捷,&孙祉伟.(2006).Optical Factors Determined by the T-matrix Method in Turbidity Measurement of Absolute Coagulation Rate Constants.Journal of Colloid and Interface Science,304(1),107-114.
MLA	徐升华,et al."Optical Factors Determined by the T-matrix Method in Turbidity Measurement of Absolute Coagulation Rate Constants".Journal of Colloid and Interface Science 304.1(2006):107-114.