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RP13 Sensors for Environmental Monitoring
(PUT-1117-831200) Real-time In Situ Measurement of Total Recoverable Copper.
Putnam, Mike1, Rivera, Ignacio1, Arias, Ernie1, 1 Space and Naval Warfare Systems Center, San Diego, San Diego, CA, USA
ABSTRACT- Regulatory measures require the monitoring of total recoverable and/or dissolved metal concentrations in effluents. US EPA's National Pollutant Discharge Elimination System permits often require monitoring of the total recoverable concentration, while the EPA's Water Quality Criteria require monitoring of dissolved concentrations of copper in the effluent. Total recoverable copper concentrations are typically measured after acidification and digestion of the effluent, while dissolved copper concentrations are measured after acidification and digestion of effluent that was previously filtered through a 0.45 micron pore size filter. A new instrument has been developed that can measure the total recoverable concentration, or dissolved concentration, of copper in point and non-point source discharges in the field. Field and laboratory data from this instrument will be compared with EPA Method 3020A "Acid Digestion of Aqueous Samples and Extracts for Total Metals for Analysis by GFAA Spectroscopy."
Key words: copper, metals, sensor
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