Matrix spike duplicate definition

Matrix spike duplicate means a duplicate sample prepared by adding a known quantity of a target analyte to a field sample matrix or other matrix that is as closely representative of the matrix under analysis as possible.
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Matrix spike duplicate means the duplicate sample of the matrix spike sample that is prepared by adding a known quantity of a target analyte to a sample matrix or to a matrix that is as closely representative of the matrix being analyzed as possible.
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Matrix spike duplicate or “MSD” means a replicate matrix spike prepared and processed in the laboratory in the same manner as its corresponding matrix spike, and generally used to determine the precision of the recovery of an analyte.
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Examples of Matrix spike duplicate in a sentence

  • At the same time the laboratory spikes and analyzes the second field sample aliquot in Section 9.5.1.1, the laboratory shall spike and analyze a third, identical field sample aliquot.December 2005 18 NOTE: Matrix spike duplicate samples are only required for Tier 2 validation studies.

  • Matrix spike duplicate (MSD)—A second sample prepared by adding a known quantity of organisms to a specified amount of sample matrix for which an independent estimate of target analyte concentration is available.

  • These datacan be compared to any other data of known quality.NOTE: MD = Matrix duplicate.MS = Matrix spike.MSD = Matrix spike duplicate.

  • Matrix spike duplicate samples are analyzed to determine the precision of the method and instrument.

  • At the same time the laboratory spikes and analyzes the second field sample aliquot in Section 9.5.1.1, the laboratory shall spike and analyze a third, identical field sample aliquot.NOTE: Matrix spike duplicate samples are only required for Tier 2 validation studies.

  • Matrix spike duplicate (MSD) and/or method duplicate (MD) samples (radiochemistry parameters) will be used to assess the precision with respect to the analytical methods.

  • Matrix spike duplicate and laboratory duplicate analyses are intended to evaluate the precision of laboratory analyses of site-specific matrices.

  • Data Quality Objectives for Analytical Laboratory Measurements (Continued) GroupParameterNotes:CI ‐ Confidence Interval; CRM ‐ Certified Reference Material; MS ‐ Matrix spike; MSD ‐ Matrix spike duplicate; RPD ‐ Relative Percent Difference; SRM ‐ Standard Reference Material; SWAMP ‐ Surface Water Ambient Monitoring Program.

  • Matrix spike duplicate variability: The laboratory reported RPDs were calculated based on the found values in the MS and MSD.

  • Matrix spike duplicate RPD (mean ± SD)Lake and stream samples 5.4% ± 5.7%, n=39DL Lake and stream samples 5.3% ± 4.9%, n=19 Particulate meHg9.


More Definitions of Matrix spike duplicate

Matrix spike duplicate or “MSD” means a replicate MS prepared and processed in the laboratory in the same manner as its corresponding MS, and generally used to determine the precision of the recovery of an analyte.
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