Inorganic materials, solubility water

Part B A Study of the Solubility of Some Selected Inorganic Materials in Water, Acetic Acid, Hydrochloric Acid, Sulfuric Acid, and Nitric Acid... 

In this study, we extend the range of inorganic materials produced from polymeric precursors to include copper composites. Soluble complexes between poly(2-vinylpyridine) (P2VPy) and cupric chloride were prepared in a mixed solvent of 95% methanol 5% water. Pyrolysis of the isolated complexes results in the formation of carbonaceous composites of copper. The decomposition mechanism of the complexes was studied by optical, infrared, x-ray photoelectron and pyrolysis mass spectroscopy as well as thermogravimetric analysis and magnetic susceptibility measurements. 

Oxygen The 02 exchanges with some soluble inorganic materials especially in waters... 

A number of materials,10 water, certain organic acids, the most important of which is citric acid, and certain inorganic salts, interfere with the determination. The decarboxylation cannot be conducted in the presence of nitrates and when carbonates are present two separate determinations of carbon dioxide are necessary. The procedure is also inapplicable when oxidizing compounds which are soluble in the hot reagent are present. Another interfering substance, sulfur dioxide,01 can be eliminated by the use of a saturated, acidified (sulfuric acid) solution of potassium dichromate to wash the gases evolved by the decarboxylation procedure. 

Table 3.3 in this section is probably the first ever published compilation of PZC of mixed oxides and other complex materials. A few results have been presented in compilations of PZC discussed in Section D in addition to data on hydr(oxides). Table 3.3 presents data related to PZC of all inorganic materials (selected organic materials are discussed in Chapter 6) other than simple oxides whose PZC are collected in Table 3.1, composite materials having a layer structure (coatings. Section F), and salts of water soluble acids or bases (Section G). Most materials whose PZC are listed in Table 3.3 belong to one of the following groups ... 

Fig. 7-19. Distribution of water-soluble (ws), organic solvent-soluble (os), and insoluble mass fractions associated with the rural continental aerosol at Deuselbach, West Germany, according to measurements of Winkler (1974). The organic fraction comprises material soluble in cyclohexane, ether, acetone, and part of the methanol-soluble fraction. The uncertainty range assumes that 0-40% of the methanol-soluble fraction contains organic compounds, and the remainder is due to inorganic salts. The water-soluble fraction of organics averages about 0.66 for all size ranges combined.

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