- منطقة بودونغ الجديدة ، شنغهاي ، الصين .
- [email protected]
Tellurium is a unique element, and the properties of tellurium-containing compounds are quite different from those of their sulfur and selenium homologues. In recent years, major advances have been made in organic sulfur and selenium chemistry, but organotellurides have been relatively underexplored.
اقرأ المزيد
Selenium had almost the same development in its earlier years but the higher stability of its derivatives probably stimulated and allowed the preparation of a larger number of organoselenium compounds. As a consequence, the selenium chemistry developed faster than those of tellurium.
اقرأ المزيد
Considering the diversified bioactivities of selenium and sulfur, more biomedical applications of tellurium-containing polymers are expected to be developed. Meanwhile, the degradation and metabolism of tellurium-containing polymers should be studied in detail in the perspective of biocompatibility and biosafety for the future clinical ...
اقرأ المزيد
Chalcogenide glasses are based on sulfur, selenium and tellurium elements, and have been studied for several decades regarding different applications. Among them, selenide glasses exhibit excellent infrared transmission in the 1 to 15 µm region. Due to their good thermo-mechanical properties, these …
اقرأ المزيد
A new method has been developed for the determination of antimony, arsenic, bismuth, selenium, tellurium and tin by hydride generation-atomic absorption spectrometry in an electrically heated quartz tube furnace under sub-atmospheric pressure.
اقرأ المزيد
up to 2.18, selenium from 2 to 15, and tellurium up to 22 wt %. As a rule, copper in slime is represented in elemental form, and selenium and tellurium in the form of copper and noble metal chalcogenides. The variety of chemical and phase compositions of slimes de-termines quite a wide range of methods for their processing. Some developed methods
اقرأ المزيد
Selenium is an essential trace element that is crucial for cellular antioxidant defense against reactive oxygen species (ROS). Recently, many selenium-containing compounds have exhibited a wide spectrum of biological activities that make them promising scaffolds in Medicinal Chemistry, and, in particular, in the search for novel compounds with …
اقرأ المزيد
In this work, a new sample-sensitive and effective method for the analysis of arsenic, bismuth, tellurium, and selenium in soil samples by simultaneous detection using HG-MC-AFS was developed. The method detection limits for arsenic, bismuth, tellurium, and selenium are 0.19 μg/g, 0.10 μg/g, 0.11 μg/g, and 0.08 μg/g, respectively.
اقرأ المزيد
Compounds able to modulate the intracellular redox state of cells have been developed, which effectively, yet also selectively, appear to kill cancer cells and a range of pathogenic microorganisms. ... Selenium / chemistry* Tellurium / chemistry* Trichophyton / …
اقرأ المزيد
A rapid method has been developed for the determination of selenium and tellurium in geological and biological samples. It involves acid digestion of the sample with mineral acids, addition of arsenic as a carrier, reduction of arsenic to co-precipitate selenium and tellurium, dissolution of the pre …
اقرأ المزيد
Selenium and Tellurium Recovery, Control, and Removal. Selenium and tellurium are typical trace elements, also called rare metals. They are necessarily associated with many sulfide ores or heavy non-ferrous metals. During the treatment of ores and concentrates, selenium and tellurium accumulate in inter-
اقرأ المزيد
Based on that, a novel and eco-friendly valence-regulated vacuum gasification method is proposed. The evolution mechanism and the selenium/tellurium separation efficiency of this new method are systematically investigated. The results provide valuable theoretical and practical guidance for the preparation of high purity selenium and …
اقرأ المزيد
Selenium (Se) and tellurium (Te) nanomaterials with novel chain-like structures have attracted widespread interest owing to their intriguing properties. Unfortunately, the still-unclear catalytic mechanisms have severely limited the development of biocatalytic performance. In this work, we developed …
اقرأ المزيد
The significance of this support has become manifest in recent years since the body of information developed has contributed to the current understanding of the important role of selenium in man and the environment. The Association encourages the sponsorship of symposia which promote information and knowledge dealing with selenium and tellurium.
اقرأ المزيد