Strontium

Strontium
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Name	Strontium
Atomic number	38
Atomic mass	87.62
Category	Alkaline earth metal
Appearance	Silvery white

Strontium Strontium is a soft, silvery alkaline earth metal used across industry, medicine, and research; it appears in ores, is produced industrially, and has notable stable and radioactive isotopes. Its chemistry, extraction, and applications intersect with international trade, nuclear history, and environmental regulation involving entities and events such as International Atomic Energy Agency, United Nations, World Health Organization, Chernobyl disaster, and Fukushima Daiichi nuclear disaster.

Introduction

Strontium is an alkaline earth metal element used in metallurgy, pyrotechnics, and nuclear technology, with industrial relevance comparable to materials discussed in contexts like Bessemer process, Siemens-Martin process, Dow Chemical Company, and BASF. Its industrial chain involves mining and refining operations connected to locations and firms such as Kola Peninsula, Sierra Leone, Rio Tinto Group, BHP, and regulatory frameworks like European Union directives and United States Environmental Protection Agency standards.

Characteristics

Strontium displays typical alkaline earth metal properties—low electronegativity and high reactivity—paralleling behaviors studied by scientists associated with institutions such as Royal Society, Max Planck Society, Lawrence Berkeley National Laboratory, and researchers in the tradition of Dmitri Mendeleev and Antoine Lavoisier. Its metallic luster, ductility, and oxidation patterns are examined in materials research at places like Massachusetts Institute of Technology, Stanford University, Imperial College London, and ETH Zurich. Physical and chemical parameters are characterized in databases maintained by organizations including National Institute of Standards and Technology and International Union of Pure and Applied Chemistry.

Occurrence and Production

Strontium occurs chiefly in the minerals celestine and strontianite, mined in regions with geology studied by institutions such as United States Geological Survey, Geological Survey of India, and British Geological Survey. Commercial production involves mining operations and smelting facilities operated by companies like Glencore, Anglo American, Freeport-McMoRan, and regional producers in China, Spain, Mexico, and Morocco. Global trade of ores and refined compounds is tracked by agencies such as World Trade Organization and financing often involves multinational banks like HSBC and Goldman Sachs.

Isotopes and Radioactivity

Strontium has several isotopes; stable isotopes and the radioactive isotope 90Sr have been central in nuclear science, nuclear testing, and radiological incidents tied to events like Trinity (nuclear test), Castle Bravo, Chernobyl disaster, and Fukushima Daiichi nuclear disaster. Research into decay chains and radiobiology has been conducted at laboratories including Los Alamos National Laboratory, Oak Ridge National Laboratory, and Lawrence Livermore National Laboratory. International monitoring of fallout and isotope dispersion involves organizations such as Comprehensive Nuclear-Test-Ban Treaty Organization, International Atomic Energy Agency, and European Commission research programs.

Applications

Strontium compounds are used in fireworks and flumes of colorants, ceramics and glass formulations, and in electronics; these industrial and artistic uses connect to companies and cultural institutions like BASF, Corning Incorporated, Philips, Sony, and museums such as Victoria and Albert Museum. Radioisotopes have been used in medical and industrial radiography, with oversight by bodies like Food and Drug Administration and International Atomic Energy Agency. Strontium salts have niche roles in metallurgy, joining practices cataloged in standards by American Society for Testing and Materials and employed by manufacturers including General Electric and Siemens.

Biological Role and Health Effects

Strontium is chemically similar to calcium, influencing bone metabolism; clinical research and guidelines have involved institutions such as World Health Organization, National Institutes of Health, Mayo Clinic, and pharmaceutical companies like Servier and research published by journals affiliated with American Medical Association and The Lancet. Radioactive 90Sr raises concerns about bone-seeking radionuclides in human and animal health, topics central to studies by Centers for Disease Control and Prevention, International Commission on Radiological Protection, and post-accident health surveillance programs run after incidents involving Chernobyl disaster and Fukushima Daiichi nuclear disaster.

Environmental Impact and Regulation

Environmental distribution, contamination, and remediation of strontium—especially 90Sr—are governed by international agreements and national laws such as those from United Nations, European Union, and United States Environmental Protection Agency; cleanup programs often involve collaboration with organizations like Greenpeace and World Health Organization. Remediation techniques and environmental monitoring have been developed in research centers including CSIRO, French Alternative Energies and Atomic Energy Commission, and university groups at University of Tokyo, University of California, Berkeley, and University of Cambridge.

Category:Alkaline earth metals