Volatilization inorganic compounds

The surface ionization (SI) method refers to ions thermally evolving from the surface of a hot filament. The vapor of a volatile inorganic compound may be passed over a heated filament where it decomposes and ionizes to form bare metal... 

The selection of a method for the fluorination of volatile inorganic Compounds is dependent upon several factors, among which are ... 

Hazardous waste types, which are especially suitable for the pyrolytic treatment, include containerized waste (i.e., barrels) and sludges and liquids that have high ash content, volatile inorganic compounds (NaCl, FeCl2, Zn, and Pb), or high concentrations of chlorine, sulfur, and/or nitrogen. 

Mass spectrometry is now widely used for inorganic characterization and microsurface analysis. El is the preferred ionization source for volatile inorganic compounds, whereas the others which are non-volatile may be analysed using ionization sources already described such as SIMS, FD, FAB, LD or ESI [92-94], The example in Figure 1.40 shows the analysis of orthorhombic sulfur (Sg ring) and Cr(CO)2(dpe)2, respectively obtained with an El source and an ESI source. 

A Survey Study of the Effects of Ionizing Radiation on Volatile Inorganic Compounds of Fluorine, Oxygen, and Nitrogen... 

The most common deposition technique is the glow-discharge decomposition (gdd) of volatile inorganic compounds - e.g., SiH4 to make a-Si H. Several variants are available where the ionized plasma is driven by a dc electric field (with the substrate on either the anode or the cathode), an ac field (60 Hz), an rf inductive, or rf capacitive (sometimes with a superposed dc bias). These techniques can be used in the presence of a magnetic field. The pressure of SiH4 is in the range 1 to 700 Pascal with the substrate at 200 300°C. Above 350°C, H2 evolves from the a-Si H layer ... 

There are more exotic classes of volatile inorganic compounds like higher carbonyls, anhydrous nitrates or borohydrides. However, their use would probably bring... 

Bansode, R.R., Losso, J.N., MasrshaU, W.E., et al. (2003). Adsorption of volatile inorganic compounds by pecan sheU- and almond shell-based granular activated carbons. Bioresource TechnoL, 90, 175—84. 

Since gas samples can thus be introduced through nozzles, the furnace part at the bottom of the cryostat (Fig. 5, e) was replaced by an optical window for simultaneous irradiation with light. For vaporizing non-volatile inorganic compounds, the small electric furnace was attached to the setup (Figs. 5 and 6). 

Bachmann, K. 1982. Separation of trace elements in solid samples by formation of volatile inorganic compounds. Talanta 29, 1-29. 

Other Preparative Methods for Molybdenum Carbides. Volatile inorganic compounds such as Mo(CO)e, W(CO)6, and WCle have been used as precursors for various experimental techniques to prepare metal carbides. Vaporization and decomposition of Mo(CO)e in the presence of a CH4/H2 mixture produced molybdenum oxycarbide with a surface area of 40 m /g (49). 

Mineral matter (wj Volatile inorganic compounds (Hj, Nj, HjS) Ashes [(Na, K)jCOj, SiO, AljOJ Water content (w ,o) Hydratation water... 

The gas chromatographic method becomes convenient for determination of enthalpies of vaporization when no data on the vapour pressure of injected substance are available as in the case of volatile inorganic compounds [100]. 

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