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· -99 Mo-99 is an important medical isotope used to help radiologists detect heart disease, bone decay and some types of hard-to-find cancers.Scientists at the U.S. Department of Energy’s DOE Argonne National Laboratory have discovered a novel way to squeeze even more out of it.Enriched , from which Mo-99 can be made, is expensive, costing about $ 1, 000 per gram.read more
Procedures for the analysis of oxide of are on the basis of tion of from impurity elements.read more
The extraction of molybdenum from high-impurity ferromolybdenum by roasting with Na2CO3 and CaO and leaching with water was studied.read more
The results indicate that: solvent- dewatering can remove up to 90% of the water in peat and diethyl ketone DEK and benzene appearmore » A preliminary economic evaluation of solvent- dewatering of peat with DEK shows that the cost of this type of dewatering is not currently competitive with other peat dewatering ...read more
· However, is combined to form more stable calcium molybdate which cannot be leached with ammonia any more. Thus, sulfuric acid leaching-anion is used first, and then a reaction with ammonia to strip is performed to obtain an ammonium molybdate solution. In this way, the ammonia nitrogen process in the latter part still exists.read more
We selected some organic phases ethyl acetate, diethyl ether, hexane, carbon tetrachloride, chloroform, dichloromethane. We prepared 500 mL of stock solution included 2 M NaOH and 167 g MoO 3.After , the organic phases were evaporated and prepared to detect concentration by ICP-AES.read more
of by a supported liquid membrane Carlos Basualtoa,*, Jose´ Marcheseb, Fernando Valenzuelaa, Adolfo Acostab a Lab. Operaciones Unitarias, Fac. Ciencias Quı´micas y Farmace´uticas, Universidad de Chile, CC 233, Santiago, Chile b Laboratorio de Ciencias de Superﬁcie y Medios Porosos, Dpto de Quı´mica, UNSL-FONCYT, C.C.256-5700, San Luis, Argentinaread more
· Various processes such as sulphide , ion exchange, adsorption and solvent extraction for separation of molybdenum from alkaline leach solution of tungsten have been proposed. Among these methods, precipitation of molybdenum as with alkali sulphide reagent is reported as the most adopted separation process.read more
on compounds of with thioglycolic acid and on a new photometric for the determination of in russianread more
Silicon by the Blue- Photometric : 30-40: 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior ...read more
is selectively extracted from an aqueous solution containing various other metal values, e.g. copper, arsenic, iron, bismuth, antimony, tin, and lead in addition to . The -bearing solution is adjusted to a pH of about 2.0 or less, and, then, intimately contacted with an organic extracting solution containing an alpha-hydroxy oxime.read more
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