The chemical compound ammonium is formed in an acid-base reaction from the gaseous base ammonia by the addition of a proton to the free electron pair. Ammonia is a strong pungent smelling, colourless, water-soluble poisonous gas that irritates to tears and has a suffocating effect. Biologically, ammonia has an important function as an intermediate product in the breakdown of amino acids (basic building blocks for animal and plant proteins). In larger quantities, it is converted into the non-toxic urea for excretion in the body or into uric acid in birds. Ammonia is formed in larger quantities during the decomposition of dead living organisms or excrement by fungi and bacteria.
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Fachjournalistin, Lektorin und Verkosterin, Wien