Analysis Of Citrate And Its Various Salts Essay - 848 Words

Overview: Citrate and its various salts have been researched extensively and found to be used in most commercial settings, such as a local supermarket, as food preservatives. Hence, the level of citrate salts of various metals in our daily food has to be allocated to acceptable levels; as well enforcement of these acceptable levels requires an analytical tool capable of quick, selective and sensitive detection and quantification of citric acid levels in our daily food. This analytical method utilizes a graphite sensor to determine citrate in various beverage samples. It requires the construction of a relatively simple graphite carbon electrode for the determination of citrate levels. This method uses graphite carbon electrodes, within a Flow Injection (FI) system, as potentiometric sensors for the determination of ascorbate in food products. The mechanism supporting this method is the process of adsorption and subsequent oxidation of ascorbate on the electrode surface and the potential differe nce after citrate introduction. The results from this analytical method were validated against a conventional procedure, i.e. a standard titrimetric method. There are many analytical methods for determining citrate levels in samples, however, too many of these methodologies are tedious and time consuming; they require expensive materials and expensive equipment. Araà ºjo et. al (2011) suggests this analytical method for it is relatively quick and inexpensive. 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