Determination of halogen species of humic substances using HPLC/ICP-MS coupling

Identification of organically bound iodine in soil humic substances by size exclusion chromatography / inductively coupled plasma mass spectrometry (SEC / ICP-MS)

“…Organically bound iodine was also identified in seepage water from soil (Radlinger and Heumann 1997;Heumann et al 1998). Then, a proportion of the iodine included in humic substances was calculated on the basis of the total amount of organically bound iodine and the total carbon content of the soil obtained in a previous report (Yamada et al 1999).…”

“…An isotope dilution mass spectrometric technique (IDMS) has also been applied for accurate analyses. For example, HPLC / ICP-MS or HPLC / IDMS methods have been used to characterize halogen elements such as iodine and bromine in natural waters (Radlinger and Heumann 1997;Heumann et al 1998). By applying ion chromatography (IC) and reversed phase chromatography (RPC) as the HPLC mode, Heumann et al (1998) reported that organoiodine species, besides inorganic iodide and iodate species, were contained in mineraL drinking, and natural waters.…”

“…In addition, they estimated the existence of organo iodine compounds associated with humic substances, because the sum of the iodine species separated by IC and RPC was smaller than the total iodine content. And high molecular halogen compounds of humic substances were found in a seepage water from soil by the combined system of size exclusion chromatography (SEC) and ICP-MS (Radlinger and Heumann 1997).…”

Binding and setting of kaolin based materials with natural organic acids

“…The mesomeric effect usually observed (Leenheer et al, 2003;Majzik and Tombácz, 2007;Rädlinger and Heumann, 1997) in organic structures rich in aromatic rings containing carboxyl or phenol acid groups could explain the strengthening observed with HA. Indeed, the delocalization of π-electrons in HA molecules lead to the appearance of negative and/or positive charges, which can increase the reactivity of HA molecules.…”

Trace Metal Speciation with ICP‐MS Detection

“…Species-unspecific isotope dilution for HPLC coupling has been described for the determination of Cd, Cu and Zn in metallothioneins extracted from eel liver, 157 while Fe, Cu and Zn were determined in proteins separated from human serum. 158 This technique has also been applied to iodine determination in humic substances, 159 as well as selenium speciation in human serum. 160 Species-specific isotope dilution using HPLC-ICP-MS has been described for selenium analysis, 80 the analysis of organotin species in sediments, 161,162 methylmercury in fish tissue, 163 trimethyllead in water, 164 and chromium speciation.…”