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

Abstract: This experiment involves the determination of F¬- ions in poll® Cavity Protection toothpaste, Minneapolis tap body of water, and an un cognise solution, and study the experimental results to values that ar expects. The methods of analysis included the economic consumption of a fluoride Ion Selective Electrode (ISE), in conjunction with two methods of interpretation of the potential difference provide by the ISE. These methods included a simple receivedization bias comparing mV verses pF, and a received 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 metric value of fluoride ions in insobriety water was 13.29ppm, where the postulate value by law must(prenominal) fall in spite of appearance the range of 0.9-1.5pp m. Since this calculated value is so ridiculous, the method of standard addition, in which the calculated value of the unknown solution beingness measured was frequently higher than the calibration curve (4.81E-3M verses 3.78E-4M), should be a like method for calculated low concentration ion solutions compared to that of a analogue calibration curve.

Introduction: Fluoride is a requisite component in minimizing tooth decay by helping rebuild enamel. Because of this chemicals very potent ability to complete this task, the fluoride ion can be found in toothpaste. The associated salt (NaF) is often put into substances that are apply al l(prenominal) day, such as tap water and cer! tain diet products, in order to help counter dental problems of the frequent 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 bill Cavity Protection). The method chosen 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

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