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  1. Water-Quality Data from the Yukon River Basin in Alaska and Canada
  2. Data Quality Assurance - Laboratory duplicates

Data Quality Assurance - Laboratory duplicates

Dates

Publication Date
Start Date
2009

Citation

Herman-Mercer, N.M., 2016, Water-Quality Data from the Yukon River Basin in Alaska and Canada: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F77D2S7B.

Summary

This dataset includes data quality assurance information concerning the Relative Percent Difference (RPD) of laboratory duplicates. No laboratory duplicate information exists for 2010. The formula for calculating relative percent difference is: ABS(2*[(A-B)/(A+B)]). An RPD of less the 10% is considered acceptable.

Contacts

Point of Contact :
Nicole M Herman-Mercer
Originator :
Nicole M Herman-Mercer
Metadata Contact :
Nicole M Herman-Mercer
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

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Data_Quality_Assurance_Laboratory_duplicates.xml
Original FGDC Metadata
View 		23.97 KB application/fgdc+xml
Data Quality Assurance - Laboratory Duplicates 2009.csv 119 Bytes text/csv
Data Quality Assurance - Laboratory Duplicates 2011.csv 4.15 KB text/csv
Data Quality Assurance - Laboratory Duplicates 2012.csv 22.05 KB text/csv
Data Quality Assurance - Laboratory Duplicates 2014.csv 14.32 KB text/csv
Data Quality Assurance - Laboratory Duplicates 2013.csv 15.73 KB text/csv

Purpose

Laboratory duplicates are run to assess the precision of the analytical instrumentation.

Communities

  • The Indigenous Observation Network: Collaborative, Community Monitoring

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