Manganese absorption

Following absorption, manganese is loosely bound to a protein and transported as transmanganin. The bones, and to a lesser extent the liver, muscles, and skin, serve as storage sites. 

Table 12. Langmuir Constants for the Absorption of Alkaline-Earth Cations on Manganese Dioxide ...

The above considerations will be illustrated by the simultaneous determination of manganese and chromium in steel and other ferro-alloys. The absorption spectra of 0.001 M permanganate and dichromate ions in 1M sulphuric acid, determined with a spectrophotometer and against 1M sulphuric acid in the reference cell, are shown in Fig. 17.20. For permanganate, the absorption maximum is at 545 nm, and a small correction must be applied for dichromate absorption. Similarly the peak dichromate absorption is at 440 nm, at which permanganate only absorbs weakly. Absorbances for these two ions, individually and in mixtures, obey Beer s Law provided the concentration of sulphuric acid is at least 0.5M. Iron(III), nickel, cobalt, and vanadium absorb at 425 nm and 545 nm, and should be absent or corrections must be made. 

A working curve was constructed for each element from counting data obtained on a number of chemically analyzed standards apparently no. background correction was necessary. By use of these simple curves, and without allowing for absorption or enhancement effects, satisfactory approximate results were obtained for both iron and manganese, as is shown by the data in Table 7-10, which are representative of those for a series of 40 samples. 

Manganese, determination by x-ray emission spectrography, 328 in domestic ores, 200, 202, 203 trace analysis by x-ray emission spectrography, 228, 229, 231, 232 Manipulative errors, standard counting error comparable with, 285-287 Mass absorption coefficient, additivity, 15... 

Ross, R. T. and Gonzalez, J. G. "Direct Determination of Trace Quantities of Manganese In Blood and Serum Samples Using Selective Volatilization and Graphite Tube Reservoir Atomic Absorption Spectrophotometry". Bull. Environ. 

The enthalpy of absorption of 1- and 2-nitropropane on breathing mask cartridges made with carbon is such that the decomposition of the nitrated derivative can cause its ignition. This accident is aggravated when the cartridge also contains metal oxides such as copper (II) oxide or manganese dioxide. 

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