scholarly journals Dynamic Light Scattering Study on the Aggregation Kinetics of Soil Colloidal Particles in Different Electrolyte Systems

2009 ◽  
Vol 25 (06) ◽  
pp. 1225-1231 ◽  
Author(s):  
ZHU Hua-Ling ◽  
◽  
LI Bing ◽  
XIONG Hai-Ling ◽  
LI Hang ◽  
...  
2016 ◽  
Vol 78 (5) ◽  
pp. 623-632 ◽  
Author(s):  
L. M. Molodkina ◽  
E. V. Golikova ◽  
R. S. Bareeva ◽  
A. N. Chusov ◽  
N. F. Bogdanova

1990 ◽  
Vol 180 ◽  
Author(s):  
R. Amal ◽  
J.A. Raper ◽  
T.D. Waite

ABSTRACTThe modelling of the aggregation kinetics of iron oxides has been succesful in predicting the increase in aggregate size as determined by dynamic light scattering measurements. The aggregates were found to exhibit fractal behaviour with fractal dimensions obtained from the scattering exponent in static light scattering studies dependent on the aggregation mechanism and ranging from 2.3 for rapid (diffusion limited) to 2.8 for slow (reaction limited) aggregation. Polydispersity and restructuring of aggregates were found not to affect the relationship between scattering exponent and aggregate fractal dimension. Excellent correspondence over a range of temperatures and ionic strengths has been obtained between results of sizing experiments using dynamic light scattering and sizes predicted using a modified Smoluchowski model incorporating fractal dimensions.


Soft Matter ◽  
2011 ◽  
Vol 7 (6) ◽  
pp. 2869 ◽  
Author(s):  
Johanna Wald ◽  
Susanne Wiese ◽  
Thomas Eckert ◽  
Willi Jahnen-Dechent ◽  
Walter Richtering ◽  
...  

2009 ◽  
Vol 1193 ◽  
Author(s):  
Sumit Kumar ◽  
B.S. Tomar ◽  
V.K. Manchanda

AbstractKinetics of formation of intrinsic colloids by tetravelent metal ions, namely, Th(IV), Hf(IV) and Pu(IV) have been studied using the dynamic light scattering technique. The milli-molar solutions of Hf(IV) and Th(IV) were prepared at varying pH (2-4) and ionic strength (0-0.01 M) and the samples were subjected to dynamic light scattering measurements at regular intervals for few days. The results showed that the size of intrinsic colloids varies with pH and ionic strength. In the case of Pu(IV) the concentration of aqueous solutions was 4.5×10−5 M.


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