- Related Work: Techniques and Methods 9-AO - General introduction for the “National Field Manual for the Collection of Water-Quality Data”
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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.'
Ritz, G.F., and Collins, J.A., 2008, pH 6.4 (ver. 2.0, October 2008): U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chap. A6.4, https://doi.org/10.3133/twri09A6.4.
Additional publication details
|Publication Subtype||USGS Numbered Series|
|Title||Chapter A6. Section 6.4. pH|
|Series title||Techniques of Water-Resources Investigations|
|Publisher||U.S. Geological Survey|
|Contributing office(s)||U.S. Geological Survey|
|Larger Work Type||Report|
|Larger Work Subtype||USGS Numbered Series|
|Larger Work Title||National Field Manual for the Collection of Water-Quality Data. U.S. Geological Survey Techniques of Water-Resources Investigations, Book 9, chap.|
|Google Analytic Metrics||Metrics page|