Determination manganese

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... 

A. C. Ferreira, M. G. A. Korn and S. L. C. Ferreira, Multivariate optimisation in preconcentration procedure for manganese determination in seawater samples by FAAS, Microchim. Acta, 146(3-4), 2004, 271-278. 

Flanagan, working with USGS standard rocks (pieces of the Westerly Granite), shows an 11% relative standard deviation for Fe (in an amount around 1% ) much less than our value of 31-49% (12). The manganese determinations he reports have a relative standard deviation of 43%, again better than our 74% and 88%. We also have a greater spread of results than his. 

Figure I. Manganese determination illustrating silicon interference...

For instance, the manganese determination by molecular absorption spectro(photo)metry can be made using different types of instruments which have various technical performances. Some results are shown (Fig. 4) for manganese concentration measurements with a DR 2000-wide bandwidth 8 nm (series 1) a Hewlett Packard 8452 A, bandwidth 2 nm (series 2) and a Spe-cord M 40-narrow bandwidth 1 nm (series 3). 

Manganese Determine the residual manganese in bleached starch prepared with potassium permanganate as directed under Manganese, Appendix IIIB. 

Cabrera-Vique, C., Teissedre, P.L., Cabanis, M.T. and Cabanis, J.C. (2000) Manganese determination in grapes and wines from different regions of France. Am. J. Enol. Vitic., 51, 103-107. 

Are the results of manganese determinations by three different analytical methods different ... 

Yields of oats were higher as a result of creatinine and stannous chloride treatments as compared with the manganese sulfate treatment. Soluble manganese determinations established that the beneficial eflFect of the free sulfur and the reducing chemicals was to solubilize the manganese oxides of the soil. 

The analytical data required on these samples were (1) manganese, and ( ) active oxygen. For the manganese determination the sample was dissolved in sulfuric acid containing ferrous sulfate. The manganese was then oxidized with sodium bismuthate in nitric acid. The resulting permanganate was titrated with standard ferrous ammonium sulfate. 

Collect the reaction solutions containing mercury ions which remain following completion of the manganese determination. Per 500 ml of solution treat with 30 g of sodium thiosulphate and then with 300 ml of 30 % sodium hydroxide solution. In this process the mercury is removed from the solution as sulphide. Hg2+ ions are no longer detectable in the filtrate of the supernatant colourless liquid (flameless atomic-absorption spectrophotometry detection limit 0.001 mg/1). 

I.S. Balogh, L. Rusnakova, J. Skrlikova, M. Torok, V. Andruch, A spectrophotometric method for manganese determination in water samples based on ion pair formation and dispersive liquid-liquid microextraction, Int. J. Environ. Anal. Chem. (2011), http //dx.doi.org/10.1080/03067319.2010.537750. 

D. G. da Silva and L. Dos Santos, Application of simplex optimisation in the development of an automated online preconcentration system for manganese determination, J. Brazil. Chem. Soc., 2010, 21(12), 2340-2346. 

Malate, determination of 62-65 Maleate, determination of 60-65, 212 Malonate, determination of 60-62, 213 Manganese, determination of 229 Mercaptobenzthiazole, determination of 133... 

---