Analysis of iodide and iodate in Lake Mead, Nevada using a headspace derivatization gas chromatography–mass spectrometry
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We report here a derivatization headspace method for the analysis of inorganic iodine in water. Samples from Lake Mead, the Las Vegas Wash, and from Las Vegas tap water were examined. Lake Mead and the Las Vegas Wash contained a mixture of both iodide and iodate. The average concentration of total inorganic iodine (TII) for Lake Mead was ∼90 nM with an iodide-to-iodate ratio of ∼1. The TII concentration (∼160 nM) and the ratio of iodide to iodate were higher for the Las Vegas Wash (∼2). The TII concentration for tap water was close to that of Lake Mead (∼90 nM); however, tap water contained no detectable iodide as a result of ozonation and chlorine treatment which converts all of the iodide to iodate.
KeywordsIodine Iodate Lake water Drinking water Gas chromatography–mass spectrometry Derivatization
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- Clesceri, L., Greenberg, A., & Trussel, R. (Eds.). (1998). Standard methods for the examination of water and wastewater, (20th ed.). Washington, D.C.: American Public Health Association.Google Scholar
- Lee, S., Ananthakrishnan, S., & Pearce, E. (2006). Iodine deficiency. eMedicine Article. (http://www.emedicine.com/med/topic1187.htm).
- Waite, T., Truesdale, V., & Olaffson, J. (2006). The distribution of dissolved inorganic iodine in the seas around Iceland. Water Research, 101, 54–67.Google Scholar