Calculation of Alumina Hydrosol Concentrations by Using Tyndall Light Dispersion Effect in Colloids

Aslanbaş, Levent (2011) Calculation of Alumina Hydrosol Concentrations by Using Tyndall Light Dispersion Effect in Colloids. Other thesis, TED ANKARA COLLEGE FOUNDATION HIGH SCHOOL.

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This study is about colloidal mixtures and a method to measure their concentrations. A light beam scatters as it passes through a colloidal mixture. This is called Tyndall Effect. By comparing the effectiveness of Tyndall Effect at different concentration colloids, a formula may be built which can be used to find out the concentration. Research question of this study is this: “Can concentration of an alumina hydrosol be calculated by using scattering ratios of laser beams in hydrosols and does the wavelength of the laser beam affect the accuracy of the concentration calculation?” The reason that this subject is studied for a Chemistry extended essay is that this subject is directly related with environmental chemistry. In lakes, seas, rivers and oceans, colloidal systems can be found. If there is too much alumina particle in a water ecosystem, life in that water may be harmed. The formula that is found in this investigation can be used to easily determine the concentration of particles in water. Different concentrations of Alumina colloids, varying between 20 and 100 μM are tried in this experiment. A strong green light beam is pointed through colloids and their photographs are taken from above the mixtures. The width of light is found in pixels from analysis of photographs and these data are used to determine the relationship between colloid concentration and scattering ratio of the mixture on green laser beam. The same procedure is

Item Type: Thesis (Other)
Additional Information: Supervisor: Ayşe ŞENAY IB Notu: C
Uncontrolled Keywords: colloidal mixtures, chemistry, Tyndall Effect, alumina hydrosol
Subjects: Q Science > QD Chemistry
Depositing User: Kamil Çömlekçi
Date Deposited: 18 Jun 2011 08:03
Last Modified: 12 Apr 2019 10:34

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