The oxidation of iodide to iodate for the polarographic determination of total iodine in natural waters

Effectiveness of activated carbon disk for the analysis of iodine in water samples using wavelength dispersive X-ray fluorescence spectrometry

“…These results implied that a quantitative analysis could be employed for samples containing more than 1.92 lg L À1 of iodine for 1 L of water sample pretreated using the AC disk. The LOD value obtained from the proposed method is comparable to those of conventional methods employed for iodine analysis, such as high performance liquid chromatography (HPLC) and ICP-MS (Table 3) (Takayanagi and Wong, 1986;Ito, 1997;Leiterer et al, 2001;Schwehr and Santschi, 2003;Pan and Zhang, 2013). The LOD values for the HPLC and ICP-MS systems for iodine analysis are 0.2 and 1.1 lg L À1 , respectively (Schwehr and Santschi, 2003;Leiterer et al, 2001).…”

Analysis of iodide and iodate in Lake Mead, Nevada using a headspace derivatization gas chromatography–mass spectrometry

“…Iodine is found in soil and water in multiple oxidation states and as both inorganic and organic species. The concentration of inorganic iodine in seawaters is between 300 and 600 μM (Takayanagi and Wong 1986). The generally accepted value for the average iodine level in the oceans is about 470 nM (Fuge and Johnson 1986;Luther and Cole 1988).…”

Determination of Total Iodine Concentration in Aquatic Environments Using Cathodic Stripping Voltammetry Combined with Sodium Hypochlorite (NaClO) Oxidation

“…However, previous studies pointed out that soils and sediments contain a certain amount of alkaline-insoluble organic matter; this leads to lowered efficiency of remineralization of OI (e.g., Stevenson and Goh, 1971;Ertel and Hedges, 1984;Schnitzer and Schuppli, 1989). Oxidation by NaClO converting DOI into inorganic iodine, is operationally convenient because it can process multiple samples simultaneously (Takayanagi and Wong, 1986;Luther III et al, 1991;Wong and Chen, 1998;Cook et al, 2000). Since conversion by wet chemistry is sensitive to ionic strength, temperature, and reaction time (Chao and Sanzolone, 1992;McKenna and Doering, 1995), it is necessary to set a moderate base condition for the environment sample.…”

“…Since conversion by wet chemistry is sensitive to ionic strength, temperature, and reaction time (Chao and Sanzolone, 1992;McKenna and Doering, 1995), it is necessary to set a moderate base condition for the environment sample. It has been reported that the NaClO oxidation may underestimate DOI (Takayanagi and Wong, 1986;Wong and Chen, 1998), suggesting that the NaClO method needs further modification.…”