National coastal assessment quality assurance project plan, 20012004.DIANE Publishing |
Expressions et termes fréquents
abundance accuracy accuracy and precision acetone ALIPHATIC HYDROCARBON analysis analytes of interest Assessment batch benthic benthic grab calculated calibration check Certified Reference Materials Char 20 Chesapeake Bay Program chlorophyll concentration conducted containers control limit criteria CRMs data quality Data Set Name database depth determine document duplicates Ecology Division EMAP EMAP-E Environmental Protection Agency EPA Region estuaries evaluation extraction field crews field data field samples filter fish fluorescence fluorometer Format Label grab Hydrolab infaunal Information Management instrument laboratory matrix spike measured metadata method detection limit Nalgene nutrient parameters performance personnel pheophytin phytoplankton procedures processing QA/QC QAPP QC checks QC samples Quality Assurance recorded Regional QA Coordinator replicate salinity sample collection SAMPYEAR sediment silt-clay solution species standard submitted Table Tarzwell taxon Taxonomic tissue total organic carbon toxicity tests trawl tubificid Type Len Format U.S. Environmental Protection U.S. EPA values verify water quality
Fréquemment cités
Page 97 - The method detection limit (MDL) is defined as the minimum concentration of a substance that can be measured and reported with 99% confidence that the analyte concentration la greater than zero and is determined from analysis of a sample In a given matrix containing the analyte.
Page 172 - FIELD DUPLICATES (FD1 and FD2) - Two separate samples collected at the same time and place under identical circumstances, and treated exactly the same throughout field and laboratory procedures. Analyses of FD1 and FD2 give a measure of the precision associated with sample collection, preservation, and storage, as well as with laboratory procedures.
Page 88 - Director of the National Institute of Standards and Technology (NIST) , formerly the National Bureau of Standards, for all arrangements within the scope of that organization's program responsibility.
Page 172 - May: This action, activity, or procedural step is neither required nor prohibited. May not: This action, activity, or procedural step is prohibited. Method blank: An aliquot of reagent water that is treated exactly as a sample including exposure to all glassware, equipment, solvents, reagents, internal standards, and surrogates that are used with samples. The method blank Is used to determine if analytes or interferences are present in the laboratory environment, the reagents, or the apparatus. Minimum...
Page 86 - EPA Requirements for Quality Assurance Project Plans for Environmental Data Operations.
Page 14 - Data comparability, ie, a measure of the confidence with which one data set can be compared to another.
Page 13 - Completeness refers to the amount of data collected from a measurement process compared to the amount that was expected to be obtained. For the reference data, completeness referred to the proportion of valid, acceptable data generated.
Page 176 - QUALITY CONTROL 9.1 Each laboratory using this method is required to operate a formal quality control (QC) program. The minimum requirements of this program consist of an initial demonstration of laboratory capability and the continued analysis of laboratory reagent blanks, field duplicates and quality control samples as a continuing check on performance.
Page 172 - DETECTION LIMIT - The minimum concentration of an analyte that can be identified, measured and reported with 99% confidence that the analyte concentration is greater than zero (Section 9.2.4).
Page iii - ... projects are typically monitored by the Administrator. Category I projects must produce results that are autonomous; that is, results that can prove or disprove a hypothesis without reference to complementary projects. CATEGORY II PROJECTS are those producing results that complement other inputs. These projects are of sufficient scope and substance that their results could be combined with those from other projects of similar scope to produce information for making rules, regulations, or policies....