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Book
Phosphate deposits : a summary of salient features of the geology of phosphate deposits, their origin, and distribution
Authors: ---
Year: 1967 Publisher: [Washington, D.C.] : Washington : United States Department of the Interior, Geological Survey, United States Government Printing Office.

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Abstract

Keywords

Phosphates.


Book
Provisional peer-reviewed toxicity values for calcium salts of inorganic phosphates (multiple cASRNs)
Authors: --- ---
Year: 2021 Publisher: Cincinnati, OH : Center for Public Health and Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency,

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This document addresses the available data on the toxicity of calcium phosphate salts. Calcium phosphate salts are considered in this document separate from the other inorganic phosphates (sodium, potassium, ammonium, and aluminum phosphates) based on the expectation that the presence of calcium would influence the chemistry, toxicokinetics, and/or toxicity of the phosphate salt relative to the other classes of inorganic phosphates. Calcium phosphates are much less soluble than sodium or potassium phosphates (Gilmour, 2019). In addition, interactions between phosphate and calcium occur both in the intestine (where calcium phosphate formation reduces absorption of both ions) and in the kidney (where phosphate decreases urinary calcium excretion) [as reviewed by EFSA (2015)]. There is evidence that the ration of calcium:phosphate (Ca:P) is an important determinant of phosphate toxicity; thus, administration of calcium phosphate might be expected to yield different toxicological effects than administration of sodium or potassium phosphate. The reader is referred to the PPRTV documents for sodium, potassium, ammonium, and aluminum phosphates for assessments of those inorganic phosphate salts.

Keywords

Phosphates.


Book
Provisional peer-reviewed toxicity values for calcium salts of inorganic phosphates (multiple cASRNs)
Authors: --- ---
Year: 2021 Publisher: Cincinnati, OH : Center for Public Health and Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency,

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Abstract

This document addresses the available data on the toxicity of calcium phosphate salts. Calcium phosphate salts are considered in this document separate from the other inorganic phosphates (sodium, potassium, ammonium, and aluminum phosphates) based on the expectation that the presence of calcium would influence the chemistry, toxicokinetics, and/or toxicity of the phosphate salt relative to the other classes of inorganic phosphates. Calcium phosphates are much less soluble than sodium or potassium phosphates (Gilmour, 2019). In addition, interactions between phosphate and calcium occur both in the intestine (where calcium phosphate formation reduces absorption of both ions) and in the kidney (where phosphate decreases urinary calcium excretion) [as reviewed by EFSA (2015)]. There is evidence that the ration of calcium:phosphate (Ca:P) is an important determinant of phosphate toxicity; thus, administration of calcium phosphate might be expected to yield different toxicological effects than administration of sodium or potassium phosphate. The reader is referred to the PPRTV documents for sodium, potassium, ammonium, and aluminum phosphates for assessments of those inorganic phosphate salts.

Keywords

Phosphates.


Book
Florida, South Carolina, and Canadian phosphates : giving a complete account of their occurrence, methods and cost of production, quantitities raised, and commercial importance
Author:
Year: 1892 Publisher: London : E. Fisher & co.,

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Book
Phosphate deposits : a summary of salient features of the geology of phosphate deposits, their origin, and distribution
Authors: ---
Year: 1967 Publisher: [Washington, D.C.] : Washington : United States Department of the Interior, Geological Survey, United States Government Printing Office.

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Abstract

Keywords

Phosphates. --- Phosphates.


Book
The Bambuta phosphate deposit, Liberia--a reconnaissance report : an unusual deposit of iron and aluminum phosphates of at least 1.5 million tons containing 28 percent PO₅
Authors: --- --- --- ---
Year: 1979 Publisher: [Reston, Va.] : Washington : United States Department of the Interior, Geological Survey, United States Government Printing Office.

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Geology --- Phosphates --- Phosphates. --- Liberia.


Book
Geology of the phosphate deposits northeast of Georgetown, Idaho
Authors: --- ---
Year: 1914 Publisher: [Washington, D.C.] : Washington : Department of the Interior, United States Geological Survey, Government Printing Office.

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Keywords

Geology --- Phosphates --- Phosphates. --- Idaho.


Book
Phosphate rock in Colombia : a preliminary report
Authors: --- --- --- --- --- et al.
Year: 1969 Publisher: [Washington, D.C.] : Washington : United States Department of the Interior, Geological Survey, United States Government Printing Office.

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Keywords

Phosphates --- Phosphates. --- Colombia.


Book
Nature and origin of deposits of phosphate of lime
Authors: --- ---
Year: 1888 Publisher: Washington, D.C. : Washington : Department of the Interior, United States Geological Survey, Government Printing Office.

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Book
Nature and origin of deposits of phosphate of lime
Authors: --- ---
Year: 1888 Publisher: Washington, D.C. : Washington : Department of the Interior, United States Geological Survey, Government Printing Office.

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