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Barium - Environmental Health Criteria 107

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Date
1990
Author
United Nations Environment Programme
World Health Organization
International Labour Organisation
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RT Generic T1 Barium - Environmental Health Criteria 107 A1 United Nations Environment Programme, World Health Organization, International Labour Organisation YR 1990 LK https://wedocs.unep.org/20.500.11822/29454 PB AB
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TY - GEN T1 - Barium - Environmental Health Criteria 107 AU - United Nations Environment Programme, World Health Organization, International Labour Organisation Y1 - 1990 UR - https://wedocs.unep.org/20.500.11822/29454 PB - AB -
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@misc{20.500.11822_29454 author = {United Nations Environment Programme, World Health Organization, International Labour Organisation}, title = {Barium - Environmental Health Criteria 107}, year = {1990}, abstract = {}, url = {https://wedocs.unep.org/20.500.11822/29454} }
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@misc{20.500.11822_29454 author = {United Nations Environment Programme, World Health Organization, International Labour Organisation}, title = {Barium - Environmental Health Criteria 107}, year = {1990}, abstract = {}, url = {https://wedocs.unep.org/20.500.11822/29454} }
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TY - GEN T1 - Barium - Environmental Health Criteria 107 AU - United Nations Environment ProgrammeUnited Nations Environment Programme, World Health OrganizationWorld Health Organization, International Labour Organisation UR - https://wedocs.unep.org/20.500.11822/29454 PB - AB -
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Description
Barium is one of the alkaline earth metals, having a relative atomic mass of 137.34 and an atomic number of 56. It has seven naturally occurring stable isotopes, of which 138Ba is the most abundant. Barium is a yellowish-white soft metal that is strongly electropositive. It combines with ammonia, water, oxygen, hydrogen, halogens, and sulfur, energy being released by these reactions. It also reacts strongly with metals to form metal alloys. In nature barium occurs only in a combined state, the principal mineral forms being barite (barium sulfate) and witherite (barium carbonate). Barium is also present in small quantities in igneous rocks and in feldspar and micas. It may be found as a natural component of fossil fuel and is present in air, water, and soil.
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https://wedocs.unep.org/20.500.11822/29454
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