Identification and characterization of selenium species in enriched green onion (Allium fistulosum) by HPLC-ICP-MS and ESI-ITMS

A review on speciation of iodine-129 in the environmental and biological samples

“…In the water leachate of seaweed, iodine exists mainly as iodide, the percentage of organic iodine ranges in 5~ 40% and the iodate is less than 5%. In biological macromolecules, iodine is mainly bound with proteins, ployphenol and pigments [42][43], and iodine in the enzymatic hydrolyzed protein exists as MIT and DIT [62]. Recently, Küpper et al [63] directly analyzed a brown seaweed (Laminaria digitata) using X-ray absorption spectroscopy (iodine K-edge), and confirmed that mainly accumulated iodine exists as iodide.…”

Determination of Iodine and Bromine Compounds by Ion Chromatography/Dynamic Reaction Cell Inductively Coupled Plasma Mass Spectrometry

“…Iodine is present in large concentrations in seawater; some types of seaweeds that accumulate large quantities of iodine from the sea are yet another source of iodine. 2 However, an excess intake of iodine causes problems associated with the brain and the nervous system. Like other elements, iodine toxicity is species dependent, iodide and iodate being less toxic compared to iodine and organically bound iodine.…”

“…It is important to have highly sensitive analytical methods available for their determination. Several methods of ion chromatography (IC), liquid chromatography (LC), size-exclusion chromatography (SEC) and capillary electrophoresis (CE) coupled with different detection methods for iodine and bromine speciation have appeared, including UV detection, 2,6,7 inductively coupled plasma optical emission spectrometry (ICP-OES), 8,9 and inductively coupled plasma mass spectrometry (ICP-MS). 2,[9][10][11][12][13][14][15][16] However, all four species, namely Br − , BrO3 − , I − and IO3 − , have not been reported using a single procedure.…”

Relative Mass Defect Filtering of High-Resolution Mass Spectra for Exploring Minor Selenium Volatiles in Selenium-Enriched Green Onions

“…Plants from genus Allium represent one of the most widely studied groups as they are known to accumulate appreciable amounts of sulfur and selenium. Selenium occurs predominantly in Allium plants in the form of Se-methylselenocysteine (Allium tricoccum) 2 and γ-glutamyl-Semethylselenocysteine (Allium sativum and Allium fistulosum) 3,4 and at intermediate levels as Se-methionine (Allium cepa). 3 These compounds are widely recognized for their selenium-related medicinal properties from epidemiological studies.…”