Major Manganese

Petraccioli M, Frasconi M, Quaratino D et al (2009) Kinetic and redox properties of MnP n, a major manganese peroxidase isoenzyme from Panus tigrinus CBS 577.79. J Biol Inorg Chem 14 1153-1163... 

The major manganese-oxide phases found in ferromanganese cmsts and nodules are todorokite, bimessite, and vemadite (e.g., R. G. Bums and... 

The sedimentary origin of major manganese deposits suggests a large settle conversion of soluble manganese into relatively insoluble forms, particularly... 

Since most major manganese deposits are of sedimentary origin, it is relevant to consider aspects of microbial transformations of manganese in freshwater and marine systems, including the conditions necessary for microbial involvement in the formation of extensive sedimentary manganese deposits. 

Desimoni et al. have found that chiral BOX-manganese(II) complexes can catalyze the intramolecular cycloaddition and ene reactions, with the latter as the major product [37]. 

Boldt YR, Ml Sadowsky, LBM Ellis, L Que, LP Wackett (1995) A manganese-dependent dioxygenase from Arthrobacter globiformis CM-2 belongs to the major extradiol dioxygenase family. J Bacterial 177 1225-1232. 

Identification of sources of analytical bias in method development and method validation is another very important application of reference materials in geochemical laboratories. USGS applied simplex optimization in establishing the best measurement conditions when the ICP-AES method was introduced as a substitute for AAS in the rapid rock procedure for major oxide determinations (Leary et al. 1982). The optimized measurement parameters were then validated by analyzing a number of USGS rock reference samples for which reference values had been established first by classical analyses. Similar optimization of an ICP-AES procedure for a number of trace elements was validated by the analysis of U S G S manganese nodule P-i (Montaser et al. 1984). 

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