Perborate hydrogen peroxide determination

Sodium perborate, hydrogen peroxide determination, 652 Soil, analysis of peroxides, 608 Solar radiation, peroxides in river water,... 

Iodide ion-selective electrode The iodide electrode has broad application both in the direct determination of iodide ions present in various media as well as for the determination of iodide in various compounds. It is, for example, important in the determination of iodide in milk [44,64,218, 382, 442], This electrode responds to Hg ions [150, 306, 439] and can be used for the indirect determination of oxidizing agents that react with iodide, such as 10 [305], lOi [158], Pd(II) [117, 347,405] and for the determination of the overall oxidant content, for example in the atmosphere [393], It can also be used to monitor the iodide concentration formed during the reactions of iodide with hydrogen peroxide or perborate, catalyzed by molybdenum, tungsten or vanadium ions, permitting determination of traces of these metals [12,192,193, 194, 195]. The permeability of bilayer lipid membranes for iodide can be measured using an I"... 

Several oxidants were tested in an epoxidation reaction in the presence of iminium salt catalysts to determine which offers the best profile in the absence of water [42]. These reactions were carried out at 0 °C with 1-phenylcyclohexene as substrate and (17) and /or (24) as catalysts (5-20 mol%), in dichloromethane as solvent. Most of the systems examined showed either high levels of background epoxidation (alkaline hydrogen peroxide, peracids, persulphates) or very low rates of reaction, even in the presence of 20 mol% of the catalysts (perselenates, percarbonates, perborates and iodosobenzene diacetate). Tetra-N-butylammo-nium Oxone, reported by Trost [43], was also unsuccessful as oxidant. 

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