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Chapter A6. Section 6.4. pH

January 1, 2008

Measurement of pH is critical to the understanding of the viability and vulnerability of environmental waters and is considered a master variable in determining the aqueous geochemistry of an aqueous system. pH is a measure that represents the hydrogen-ion concentration (activity) of a solution. This section of the National Field Manual (NFM) describes U.S. Geological Survey (USGS) guidance and protocols for measurement of pH in ground and surface waters. Each chapter of the National Field Manual is published separately and revised periodically. Newly published and revised chapters will be announced on the USGS Home Page on the World Wide Web under 'New Publications of the U.S. Geological Survey.'

Publication Year 2008
Title Chapter A6. Section 6.4. pH
DOI 10.3133/twri09A6.4
Authors George F. Ritz, J. A. Collins
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Techniques of Water-Resources Investigations
Series Number 09-A6.4
Index ID twri09A6.4
Record Source USGS Publications Warehouse
USGS Organization U.S. Geological Survey