Matrix spike duplicate definition

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.
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.
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.

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, and blank samples were analyzed by the laboratory, and the resulting data were provided to DTSC and EPA.

  • 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.

  • 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 (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.

  • Spiking occurs prior to sample preparation and analysis.• Matrix spike duplicate (MSD): A replicate spiked aliquot of a sample that is subjected to the entire sample preparation and analytical process.

  • 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 recoveries and RPD will be calculated by the following equations:Matrix Spike Recovery (%R) = SSR - SRSAx 100where:SSR = Concentration of target analyte in spike sample (spiked) SR = Concentration of target analyte in sample (unspiked) SA = Concentration of spike addedand RPD= MSR- MSDR(MSR+ MSDR)/2 x 100 where: RPD = Relative percent difference MSR = Matrix spike recoveryMSDR = Matrix spike duplicate recovery Percent recoveries will be calculated to the nearest whole percentage.

  • The CHED accompanying the batch must indicate that it is ‘acceptable for the internal market’.

  • Matrix spike duplicate may be used for data evaluation instead of replicate.


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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