Quality Assurance Project Intercomparison Exercise Results 1991-1993. NationalStatus and Trends Program for Marine Environmental Quality

摘要

The National Oceanic and Atmospheric Administration (NOAA) National Status andTrends (NS&T) Program determines the current status and any changes over time of the environmental health of the estuarine and coastal waters of the United States. Concentrations of organic and inorganic contaminants are determined in mollusks, bottom-dwelling fish and sediments collected along the coast of the United States. The quality of the analytical data generated by the NS&T Program is overseen by its QA Project component, which is designed to document sampling protocols, analytical procedures, and laboratory performance, and to reduce intralaboratory and interlaboratory variation. All NS&T laboratories are required to participate in yearly intercomparison exercises. The results of the trace organic and trace metals 1991 through 1993 intercomparison exercises are described and discussed.