Fluoride Concentration Determination through Calibration Curve and Standard Addition Methods by ISE

Abstract: This experiment involves the determination of F¬- ions in pennant® Cavity Protection toothpaste, Minneapolis tap body of water, and an un cognise solution, and canvass the experimental results to values that ar expects. The methods of analysis included the function of a fluoride Ion Selective Electrode (ISE), in conjunction with two methods of adaptation of the potential difference provide by the ISE. These methods included a simple receivedization curve comparing mV verses pF, and a example admission method. Each of these methods was prepared by standardized solutions with a known amount of Fluoride in order to have a reference. It was plunge however that the method of utilizing a calibration curve turn up fruitless in determining degree Fahrenheit ion compactness, as the reckon value of fluoride ions in drink water was 13.29ppm, where the postulate value by law essential fall in spite of appearance the range of 0.9-1.5ppm. Since this mensural value is so ridiculous, the method of standard addition, in which the calculated value of the unknown solution beingness measured was oftentimes higher than the calibration curve (4.81E-3M verses 3.78E-4M), should be a favorite(a) method for calculated low concentration ion solutions compared to that of a unidimensional calibration curve. Introduction: Fluoride is a requisite component in minimizing tooth decay by helping rebuild enamel. Because of this chemicals very in force(p) ability to complete this task, the fluoride ion can be found in toothpaste. The associated salt (NaF) is often put into substances that are utilize each day, such as tap water and certain forage products, in order to help counter dental problems of the habitual population. The purpose of this experiment is to determine the engage concentration of fluoride in an unknown solution, Minneapolis tap water, and an anti endocarp toothpaste (in our case gratuity Cavity Protection). The method chos en to subscribe to this experiment utilized! the fluoride Ion Selective Electrode (ISE) that was composed of a Lanthanum...If you involve to get a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay