Metal-inorganic-transport

Mineral wool is perhaps the best known of the whole range of insulation types. It is widely used in all sectors of industry, transport and building for thermal, acoustic and fire-protection purposes. There is a common misconception that mineral wool is a specific product type - it is not. Mineral wool is a generic name for a range of man-made non-metallic inorganic fibers. The following definitions should help to clarify the situation ... 

Pt(IV) than Pd(n) [49], An interesting system, with asymmetric inorganic membranes, was used for selective metal ion separation. The membrane phase was a self-assembled monolayer of alkyl thiols as a hydrophobic phase for a trialkyl phosphate and phosphine oxide-based metal ion carrier. This organic mixture was attached on alumina porous supports with thin layers of gold. The thin membrane layer gave high fluxes and high selectivity, while metal ions transport was carrier limited [50]. 

Apart from the alkali metals, the reactions of which have been reviewed in Section 2, very few metals are sufficiently volatile to enable gas-phase diffusion flame studies to be undertaken. The high temperatures required for vaporization would destroy organic materials, so only reaction with inorganic gases can be considered. The combustion of some metals has been studied, as they are of importance as possible rocket propellant systems. The kinetics, however, are complex. Metals burn predominantly, and in some cases exclusively, by heterogeneous reactions [305], since both the fuel and the products are usually in the condensed state. In metal combustion, transport processes exert at least a partially controlling influence, and so information on reaction kinetics is difficult to obtain. The reaction may occur at the surface of the metal, or on the surface of... 

Concerning inorganic or organic reactions, the primary corrosion products of the metallic implants are mainly responsible for the biocompatibility of the implanted metal because they may have, due to their large surface, an interaction with the tissue or with the body fluid. The metal is transported by a solution in the body fluid to the various organs where due to an enrichment of the metal an undesirable interaction may occur. 

Oehme FW (1978) Mechanisms of heavy metal inorganic toxicides. In Oehme (ed) Toxicity of heavy metals in the environment. Dekker, New York, pp 69-85 Orion Research Inc (1970) Mercury by electrode. Orion Newslett 11 41-42 Ortiz DF, Kreppel L, Speiser DM, Scheel G, McDonald G, Ow DW (1992) Heavy metal tolerance in the fission yeast requires an ATP-binding cassette-type vacuolar membrane transporter. EMBO J 11 3491-3499 Percival SS, Harris ED (1990) Copper transport ceruloplasmin characterization of the cellular uptake mechanism. Am J Physiol 258 C140-C146 Philipson KD (1985) Sodium-caldum exchange in plasma membrane vesicles. Annu Rev Physiol 47 561-571... 

Transport in solution or aqueous suspension is the major mechanism for metal movement from the land to the oceans and ultimately to burial in ocean sediments. In solution, the hydrated metal ion and inorganic and organic complexes can all account for major portions of the total metal load. Relatively pure metal ores exist in many places, and metals from these ores may enter an aquatic system as a result of weathering. For most metals a more common sequence is for a small amount of the ore to dissolve, for the metal ions to adsorb onto other particulate matter suspended in flowing water, and for the metal to be carried as part of the particulate load of a stream in this fashion. The very insoluble oxides of Fe, Si, and A1 (including clays), and particulate organic matter, are the most important solid adsorbents on which metals are "carried."... 

---