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Phosphates in Water Pollution


Phosphates may be created by substituting some or all of the hydrogen of
a phosphoric acid by metals. Depending on the number of hydrogen atoms that are
replaced, the resulting compound is described as a primary, secondary or
tertiary phosphate. Primary and secondary phosphates contain hydrogen and are
acid salts. Secondary and tertiary phosphates, with the exception of those of
sodium, potassium and ammonium are insoluble in water. Tertiary sodium phosphate
is valuable as a detergent and water softener. The primary phosphates tend to be
more soluble.
Phosphates, which are an important component to metabolism in both
plants and animals, help in the first step in oxidation of glucose in the body.
Primary calcium phosphate is an ingredient of plant fertilizer.
Phosphates have caused increasing attention recently. The focus is on
the environmentally harmful effects in household detergents. Wastewater, from
laundering agents, contains phosphates,......

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Approximate Word Count: 733
Approximate Pages: 3 (250 words per double-spaced page)

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