selenium tellurium developed

Rapid determination of selenium and tellurium by atomic

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 precipitate in dilute nitric acid and subsequent

SELENIUM AND TELLURIUM: STATE OF THE MARKETS,

2015-3-4 Selenium and tellurium are used as alloying additions in ferrous and nonferrous metallurgy. The current state of the international and Russian markets for selenium and tellurium is surveyed based on the literature data of the last several years. Selenium. Selenium comprises 6·10–5 mass % of the Earth’s core and is classified as a trace

Selenium- and tellurium-containing fluorescent molecular

Selenium- and tellurium-containing fluorescent molecular probes for the detection of biologically important analytes The study of analytes also extends to metal ions, for example, Hg(2+), and anions such as fluoride (F(-)), and we have developed NIR-based systems as well. These work through various photomechanisms, including photoinduced

(PDF) From Selenium-to Tellurium-Based Glass Optical

Since then, new ma terials containing large amounts of tellurium have been developed in the Te-Ge-Ga [14] and Te-Ge-I [15] systems. The Te-Ge-Ga ternary system

Determination of Selenium and Tellurium in Basalt Rock

2009-6-1 Promising methods have been developed recently for the determination of selenium (Se) and tellurium (Te) in geological materials at ng g −1 and lower levels, using hydride generation‐inductively coupled plasma‐mass spectrometry. Here we report on a new isotope dilution‐hydride generation‐inductively coupled plasma‐mass spectrometry (ID‐HG‐ICP‐MS) method for the

Compounds of Selenium and Tellurium with Nitrogen

In the last three decades the field of the traditionally more exotic selenium nitrogen and tellurium nitrogen compounds has developed considerably. This review presents some of the recent results with a focus on crystal structures.

Selenium stories Nature Chemistry

2011-6-23 Russell Boyd ponders on how selenium — despite close similarities with its neighbours of the chalcogen family, sulfur and tellurium — continues to reveal chemical and biological activities of

学术报告遗传与发育协同创新中心

2014-12-28 Prof. Huang has pioneered and developed selenium and tellurium derivatizations of nucleic acids for structure and function studies of nucleic acids, protein-nucleic acid complexes, and nucleic acid-small molecular ligands (such as anticancer drugs).

新闻详细--上海交大化学化工学院 SJTU

2014-11-18 He has pioneered and developed selenium and tellurium derivatizations of nucleic acids for structure and function studies of nucleic acids, protein-nucleic acid complexes, and nucleic acid-small molecular ligands (such as anticancer drugs).

Separation of selenium (IV) and tellurium (IV) from nitric

2021-9-12 Throughout the process of our study, a solvent extraction method has been developed to separate tetravalent selenium, Se(IV), and tetravalent tellurium, Te(IV), from the nitric acid medium using CYANEX 301/kerosene organic solution. The effects and influences of main parameters having an impact on the extraction process, such as acid and extractant concentration, the acidity of the stripping

Selenium- and tellurium-containing fluorescent molecular

Selenium/tellurium containing polymer materials in

2015-12-1 Introduction. Selenium was discovered in 1817 by the Swedish scientist Jöns Jacob Berzelius, one of the founders of modern chemistry, who named it after selene, the Greek word of moon .Located right below selenium in the chalcogen group of the period table is its congener tellurium, which was actually discovered 35 years earlier, in 1782 by Franz-Joseph Müller von Reichenstein.

(PDF) From Selenium-to Tellurium-Based Glass Optical

Since then, new ma terials containing large amounts of tellurium have been developed in the Te-Ge-Ga [14] and Te-Ge-I [15] systems. The Te-Ge-Ga ternary system containing 70 to 80% of Te was the

Simultaneous speciation of inorganic selenium and

A new method was developed for the simultaneous determination of inorganic tellurium and selenium species in waters by inductively coupled plasma mass spectrometry (ICP-MS) following selective solid-phase extraction (SPE) separation.Under acidic conditions, only selenium(IV) and tellurium(IV) formed complexes with ammonium pyrrolidine dithiocarbamate (APDC), and the complexes were completely

Minerals Free Full-Text Tellurium and Selenium

Mineralization of Te and Se was found in gold deposits and uranium occurrences, located in the Paleoproterozoic greenstone belts in Northern Fennoscandia. These deposits are of different genesis, but all of them formed at the late stages of the Svecofennian orogeny, and they have common geochemical association of metals Au, Cu, Co, U, Bi, Te, and Se. The prevalent Te minerals are Ni and Fe