Determination of iodate in table salt by transient isotachophoresis–capillary zone electrophoresis

A novel method for iodate determination using cadmium sulfide quantum dots as fluorescence probes

“…Resonance scattering spectrum [31] 3.0 × 10 −8 1.0 × 10 −7 to 2.0 × 10 −6 Amorphous mixed-valent molybdenum oxide film electrode [32] 1.0 × 10 −7 1.0 × 10 −6 to 2.0 × 10 −5 LDH modified electrode [33] 2.5 × 10 −7 1.0 × 10 −6 to 2.0 × 10 −3 Optical chemical sensor [34] 7.44 × 10 −7 3.94 × 10 −6 to 1.57 × 10 −5 Capillary [35] 2.0 × 10 −8 -Ion chromatography [36] 1.1 × 10 −7 3.8 × 10 −7 to 1.4 × 10 −4 Electrospray ionization and mass spectrometry [37] 3.4 × 10 −8 1.0 × 10 −7 to 1.0 × 10 −5 Multi-walled carbon nanotubes and iron(III)-porphyrin film electrode [40] 2.5 × 10 −6 1.0 × 10 −5 to 4.0 × 10 −3 The present method 6.0 × 10 −9 1.0 × 10 −8 to 1.0 × 10 −5 bromine saturated aqueous solution and 1 mL of 0.01 mol L −1 HCl were successively placed and mixed thoroughly, and then paced for about 25 min. The mixture was boiled for 5 min after it turned colorless for all bromine was expelled.…”

“…Therefore, it is of great importance to detect iodate in salt and other environmental samples. Nowadays, many methods for the determination of trace iodate have been proposed, which includes resonance scattering spectrometry [31], electrochemical sensor [32,33], optical redox chemical sensor [34], ion chromatography [35], electrospray ionization mass spectrometry [36], capillary [37], and so on. But few of their detection limits achieved at 1.0 × 10 −8 mol L −1 .…”

A rapid assessment method for determination of iodate in table salt samples

“…Some of the recent methods include kinetic spectrophotometric methods (Ni and Wang 2007), flow injection analysis (Shabani et al 2011), microspectrophotometry after liquidphase microextraction (Pereira et al 2010), using cadmium sulfide quantum dots as fluorescence probes (Tang et al 2010), liquid-liquid microextraction by high-performance liquid chromatography-diode array detection (Gupta et al 2011), ion chromatography with integrated amperometric detection (Babulal et al 2010), transient isotachophoresiscapillary zone electrophoresis (Wang et al 2009), gas chromatography-mass spectrometry (Das et al 2004), using polymer membrane selective for molecular iodine (Bhagat et al 2008), and neutron activation analysis method (Bhagat et al 2009). A non-suppressed ion chromatography with inductively coupled mass spectrometry (ICP-MS) has been developed for the simultaneous determination of iodate and iodide in seawater (Zul et al 2007).…”

Spectrophotometric determination of iodate in iodised salt by flow injection analysis

“…Several analytical techniques have been reported for the determination of iodate, including spectrophotometry (Afkhami & Mosaed, 2002;Pena-Pereira, Senra-Ferreiro, Lavilla, & Bendicho, 2010;Silva, De Oliveira, & Neves, 1998), chemiluminescence (Zui & Terletskaya, 1995), ion chromatography (McTaggart, Butler, Haddad, & Middleton, 1994;Rebary, Paul, & Ghosh, 2010), gas chromatography-mass spectrometry (Reddy-Noone, Jain, & Verma, 2007;Shin, Oh-Shin, Kim, & Ryu, 1996), high performance liquid chromatography (Xu, Li, Gu, & Paeng, 2004), indirect atomic absorption spectrophotometry (Chakraborty & Das, 1989), transient isotachophoresis-capillary zone electrophoresis (Wang, Zhao, Shen, Tang, & Wang, 2009), and electroanalysis (Huang, Li, Chen, & Wang, 2008;Lin, 1999;Sharma & Songara, 2007). Most of these methods are either time consuming, or require complicated and expensive instruments, or are not very sensitive.…”