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===Redox titrations=== *[[Winkler test for dissolved oxygen]]: Used to determine oxygen concentration in water. Oxygen in water samples is reduced using [[manganese(II) sulfate]], which reacts with [[potassium iodide]] to produce [[iodine]]. The iodine is released in proportion to the oxygen in the sample, thus the oxygen concentration is determined with a redox titration of iodine with [[thiosulfate]] using a starch indicator.<ref> {{Cite book | last = Spellman | first = F.R. | title = Handbook of Water and Wastewater Treatment Plant Operations | url = https://archive.org/details/handbookwaterwas00spel_843 | url-access = limited | publisher = CRC Press | edition = 2 | year = 2009 | pages = [https://archive.org/details/handbookwaterwas00spel_843/page/n587 545] | isbn = 978-1-4200-7530-4 }}</ref> *[[Vitamin C]]: Also known as ascorbic acid, vitamin C is a powerful reducing agent. Its concentration can easily be identified when titrated with the blue dye Dichlorophenolindophenol ([[Dichlorophenolindophenol|DCPIP]]) which becomes colorless when reduced by the vitamin.<ref> {{Cite book | title = Biology | publisher = Taylor & Francis | volume = 3 | year = 1967 | location = London | pages = 52 }}</ref> *[[Benedict's reagent]]: Excess [[glucose]] in urine may indicate [[diabetes]] in a patient. Benedict's method is the conventional method to quantify glucose in urine using a prepared reagent. During this type of titration, glucose reduces [[Copper|cupric]] ions to cuprous ions which react with [[potassium thiocyanate]] to produce a white precipitate, indicating the endpoint.<ref> {{Cite book | last = Nigam | title = Lab Manual Of Biochemistry | publisher = Tata McGraw-Hill Education | year = 2007 | pages = 149 | isbn = 978-0-07-061767-4 }}</ref> *[[Bromine number]]: A measure of [[Saturated and unsaturated compounds|unsaturation]] in an analyte, expressed in milligrams of bromine absorbed by 100 grams of sample. *[[Iodine number]]: A measure of unsaturation in an analyte, expressed in grams of iodine absorbed by 100 grams of sample.
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