IDENTIFICATION AND DETERMINATION OF GERMANIUM CHEMICAL FORMS IN THE OBJECTS OF DIFFERENT NATURE
Journal Title: Вісник Одеського національного університету. Хімія - Year 2018, Vol 23, Issue 4
Abstract
On the basis of literary sources data the questions of identification and determination of Germanium chemical forms in various objects are considered. It is marked that this area of analytical chemistry of Germanium (in comparison with many other elements) is small worked out. The small number of information testifies on the speciation analysis of Germanium containing objects are both in encyclopedic and in other summarizing literature and in the single articles. It is shown that the combined methods which include combining procedures of division (separation) and concentration of forms with highly sensitive determination with the use of physical methods of analysis are the most effective for Germanium forms determination in the objects of environment. It is established that various physical methods (such as X-ray diffraction, IR-spectroscopy, thermogravimetry, solid-phase luminescence and others) are used for finding out the Germanium forms in inorganic Germanium containing materials. The different variants of the X-ray spectroscopy ( for example X-ray absorption near-edge structure (XANES), X-ray fine structure (XAFS)) are most widely used for these purposes, especially X-ray photoelectron spectroscopy which makes it possible not only to find out but in some cases to determine the Germanium forms concentration. Quantitative determination of Germanium forms in inorganic materials comes true, mainly, by the titrimetric methods (redox-metry, complexometry) and selective extraction of forms by specific solvents, which are choosed counting physical and chemical properties of Germanium forms which are determined and the nature of samples which are investigated. The difficulties of quantitative analysis, related to the variety of Germanium forms and their crystalline modifications, and also with the methods of validating of determination of forms are marked.
Authors and Affiliations
N. А. Chivireva, I. V. Stoianova, V. P. Antonovich, V. F. Zіnchenko, Iu. P. Chukhriy
Keywords
Related Articles
- EP ID EP494030
- DOI 10.18524/2304-0947.2018.4(68).147811
- Views 114
- Downloads 0
QSAR ANALYSIS OF THE ECDYSTEROIDS’ AFFINITY BASED ON 2.5D-SIMPLEX REPRESENTATION OF THE MOLECULAR STRUCTURE
QSAR-studies of such classes of the organic compounds as steroids, are important because they can expand information about optimal ligands, research of the compounds analogical to existing steroids and understanding fact...
COORDINATION COMPOUNDS OF 3D-METALS ACETYLACETONATES WITH THIOSEMICARBAZIDE
Coordination Compounds of 3d-Metals acetylacetonates with Thiosemicarbazide were synthesized. Their physical and chemical properties and structure were studied by conductometry, IR spectroscopy, electronic spectroscopy,...
LUMINESCENCE DETERMINATION OF ETODOLAC
A highly sensitive, simple and rapid method for determination of non-steroidal anti- inflammatory drug – etodolac (Et) in washings from surfaces of pharmaceutical equipment have been proposed. The intensity of native lum...
NATURAL CLINOPTILOLITE ANCHORED CHLORIDES OF 3D METALS IN THE REACTION OF LOW-TEMPERATURE SULFUR DIOXIDE OXIDATION WITH AIR OXYGEN
Such adsorbents as natural aluminosilicates and activated coal and such chemisorbents as transition metal oxides are commonly used for cleaning gas emissions from sulfur dioxide. The main disadvantage of the latters exce...
THE STUDY OF CLINOPTILOLITE MODIFIED WITH3d METALS HALIDES BY IR AND DIFFUSE REFLECTANCE SPECTROSCOPY
The results of investigation of natural clinoptilolite (N-CLI) and that modified with 3d metal halides (MeCl2/N-CLI, where Me are Cu, Co, and Mn) by IR and diffuse reflectance spectroscopy are summarized. A band at 3437...