| Autor: |
Riskin, Melissa L., Reutter, David C., Martin, Jeffrey D., Mueller, David K. |
| Předmět: |
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| Zdroj: |
United States Department of the Interior. Geological Survey. Open-File Report; 2018, pi-15, 26p |
| Abstrakt: |
The data-quality objectives for samples collected at surface-water sites in the National Water-Quality Network include estimating the extent to which contamination, matrix effects, and measurement variability affect interpretation of environmental conditions. Quality-control samples provide insight into how well the samples collected at surface-water sites represent the true environmental conditions. Quality-control samples used in this program include field blanks, replicates, and field matrix spikes. This report describes the design for collection of these quality-control samples and the data management needed to properly identify these samples in the U.S. Geological Survey's national database. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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