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Analytical chemistry of rare earths

The present title consists of twelve chapters. The first chapter is an introduction covering definition, classification, properties, world reserves, methods of processing from ores, methods of separation both classical and modem, and analytical chemistry of rare earths, including classical and modem methods. [Pg.999]

Ryabichicov, D.I. and V.A. Ryabukhin, 1966, Analytical Chemistry of Rare Earth Elements (in Russian) (Institute of Geochemistry and Analytical Chemistry, Moscow). [Pg.200]

A review of the analytical chemistry of rare earth-cobalt alloys has been recently given by Brusdeylins (1975). [Pg.205]

The analytical chemistry of rare earths has been reviewed by Banks and Klingman (1961), Loriers (1964), Ryabchikov (1959), and Ryabchikov and Ryabukhin (1964). Fassel (1961) reviewed the analytical spectroscopy of rare earth elements. In volume 4 of this Handbook chapters can be found on the chemical spectrophotometric and polarographic methods (O Laughlin 1979), spark source mass spectrometry (Conzemius 1979, Taylor 1979), optical atomic emission and absorption (DeKalb and Fassel 1979), X-ray excited optical luminescence (D Silva and Fassel 1979), neutron activation (Boynton 1979), mass spectrometric stable isotope dilution analysis (Schuhmaim and Philpotts 1979), and shift reagents and NMR (Reuben and Elgavish 1979). [Pg.3]

Our general research interests are in the area of the coordination chemistry and solvation of f-element complexes. We are particularly interested in descriptions of this chemistry that can be developed through studies of the thermodynamics, kinetics, and spectroscopy of complexation reactions. With the excellent general reviews of techniques and applications already available in the literature, we will indulge ourselves in discussions of the fundamental coordination chemistry of rare earths as they impact analytical-scale separations. We will focus primarily on describing the fundamental interactions that lead to a successfiil separation. Among the topics we will discuss are ... [Pg.314]

Balaram, V. (1996). Recent trends in the instrumental analysis of rare earth elements in geological and industrial materials. Trends in Analytical Chemistry 15 475 486. [Pg.351]

Dulski, P. (1994). Interferences of oxide, hydroxide and chloride analyte species in the determination of rare earth elements in geological samples by inductively coupled plasma-mass spectrometry. Fresenius Journal of Analytical Chemistry 350 194-203. [Pg.360]

Figure 6.6 Mass spectrum of rare earth elements tREEs) measured by CE-ICP-MS with on line separation of analytes (50 nl solution volume) a) natural isotopic pattern, concentration of each REE - 800ngg b) in an irradiated tantalum target (). S. Becker and H. ]. Dietze, Int. /. Mass Spectrom. Ion Proc. 197, 1-35 (2000). Reproduced by permission of the Royal Society of Chemistry.)... Figure 6.6 Mass spectrum of rare earth elements tREEs) measured by CE-ICP-MS with on line separation of analytes (50 nl solution volume) a) natural isotopic pattern, concentration of each REE - 800ngg b) in an irradiated tantalum target (). S. Becker and H. ]. Dietze, Int. /. Mass Spectrom. Ion Proc. 197, 1-35 (2000). Reproduced by permission of the Royal Society of Chemistry.)...
The analytical chemistry of the transition elements see Transition Metals), that is, those with partly filled shells of d (see (f Configuration) or f electrons see f-Block Metals), should include that of the first transition period (Sc, Ti, V, Cr, Mn, Fe, Co, Ni, and Cu) and that of the second transition series (Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, and Ag). The third transition series embraces Hf, Ta, W, Re, Os, Ir, Pt, and An, and although it formally begins with lanthanum, for historical reasons this element is usually included with the lanthanoids (rare-earth elements) see Scandium, Yttrium the Lanthanides Inorganic Coordination Chemistry Rare Earth Elements). The actinoid elements see Actinides Inorganic Coordination Chemistry) are all radioactive see Radioactive Decay) and those with atomic number see Atomic Number) greater than uranium (Z = 92) are artificial the analytical chemistry of these elements is too specialized to consider here. [Pg.199]

Vickery, R. C., Analytical Chemistry of the Rare Earths, Pergamon Press, 1961. [Pg.1076]

For this reason, we consider it hardly possible to cite all of the publications. Let us focus only on the following examples. Hydroxamic acids have already been for a long time subject of the classical analytical chemistry. In [71], the possibility of using these compounds in flotation of rare-earth minerals is shown. It has been concluded that on a mineral surface cerium chelates are formed. Besides, chemisorption is accompanied by a physical multilayer adsorption of hydroxamic acid derivatives formed by reaction with cations in the water phase. A number of chelate-forming compounds including hydroxamic acids has been tested in flotation of niobium ores [72]. The best results are obtained when using alkyl phosphonic acids. Chemisorption mechanism and the structure of the surface compounds are established by spectroscopic methods. [Pg.543]

Hazardous Decomp. Prods. Heated to decomp., produces ammonia gas, NOx, CO2, CO Uses Analytical chemistry laboratory analysis of rare earth metals prod, of safety explosives dyeing and metal polishing mfg. of oxalates mst and scale removal... [Pg.272]

Literature on the history of chemistry deals with the history of rare earth elements only a sketchy manner it is due for a thorough and detailed discussion. While I was working on this chapter, I fully understood the reasons of this perfunctory treatment, experiencing the vast confusion, the many contradictions, errors and mistakes accompanying the discovery of the rare earth elements. I certainly do not venture to claim that 1 succeeded - within the narrow scope of this chapter - to fill all gaps in the history of the rare earth elements. 1 do hope, however, that I may have offered more than was known up until now on all the admirable analytical efforts needed to discover these peculiar elements, which stubbornly resisted usual analytical separation techniques. [Pg.34]

Thiophen Derivatives of Analytical Interest.—2-Thenoyltrifluoroacetone has maintained its position as a chelating agent in analytical chemistry. Papers describing its use in the extraction or determination of thorium, copper, europium, thallium, niobium, and molybdenum have appeared. The effect of copper(n) on the formation of monothenoyltri-fluoroacetonatoiron(iii) has been studied. The stability constants of some bivalent metal chelates of di-(2-thenoyl)methane have been determined. 3-Thianaphthenoyltrifluoroacetone has been proposed as a reagent for the spectrophotometric determination of iron(iii) and cerium(iv). The stabilities of metal chelates formed from derivatives of thiophen-2-aldehyde and of rare-earth carboxylates of thiophen-2-carboxylate have been studied. [Pg.427]

The 35 years after 1840 were uneventful regarding the discovery of rare earth elements. Berzelius had died in 1848, Mosander in 1858. Inorganic chemistry was under pressure from the growing organic chemistry. The introduction of a new analytical technique, spectroscopy, however, aroused new interest and opened new approaches. The gradual separation of one element from another could be followed. This was very valuable in the many and time-consuming fractional crystallizations. [Pg.446]

As confirmation of the mature nature of the field of rare earth and actinide ion chemistry. Section 2 concludes with references to a number of studies that address topics as diverse as metal-metal bonding, new species from the fragmentation of complex ions, flame chemistry and chemi-ionization, and analytic apphcations in elemental MS. [Pg.14]

Carboxynitrazo (CNA) is a sensitive organic reagent for spectrophotometric determination of rare earths. It has been synthesized by the Analytical Chemistry Laboratory, Wuhan University, China. Jiao et al. (1984) investigated the polaro-graphic behavior of CNA and its complexes with La and Nd in detail. The single-sweep polarograms of the Nd(III)-CNA-KN03 system are shown in fig. 3. [Pg.174]

Vickery RC (1961) Analytical chemistry of the rare earths. Pergamon, Oxford... [Pg.89]

Earth Elements, Extraction, Analysis, Applications (Academy of Sciences, USSR, Moscow). Ryabchikov, D.I., and VA, Ryabukhin, 1964, Soviet research on analytical chemistry of the rare earths, in Progress in the Science and Technology of the Rare Earths, Vol. 1, ed. L. Eyring (Pergamon Press, London) pp. 399-415. [Pg.27]

There appears to be only one review-type article on the analytical techniques used to measure lanthanides in natural materials. This is Henderson and Pankhurst s (1984) chapter in Rare Earth Element Geochemistry (Henderson 1984) on the analytical chemistry of lanthanides in rocks, minerals and water. A Handbook of Silicate Rock Analysis by Potts (1987) covers the principles and instrumentation used in the mass... [Pg.502]


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See also in sourсe #XX -- [ Pg.47 ]




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