Matrix spike definition

Matrix spike or “MS” means a sample prepared by adding a known quantity of analyte to an aliquot of an environ- mental sample and subjecting the sample to the entire analytical procedure to determine the ability to recover the known analyte or compound. The background concentrations of the analytes in the sample matrix shall be determined in a separate aliquot and the measured values in the matrix spike corrected for background concentrations.
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Matrix spike means a replicate sample to which a known amount of the analyte has been added prior to any prepara- tive steps to determine percent recovery.
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Matrix spike means an additional aliquot of an environmental sample to which a known concentration of the analytes of interest is added before sample preparation, cleanup, and determinative procedures have been implemented. It is used to assess the performance of the method by measuring the effects of interferences caused by the sample matrix and reflects the bias of the method for the particular matrix in question.
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Examples of Matrix spike in a sentence

  • A laboratory shall prepare and run at least one laboratory control sample with an analytical batch of 10 to 20 samples along with and under the same conditions, including all sample preparation steps, as the other samples in the analytical batch.c. Matrix spike sample.

  • Matrix spike (MS) samples, as required by the methods in this subsection, shall be spiked and filtered by a laboratory approved for Cryptosporidium analysis under s.

  • Matrix spike, unspiked duplicate, or matrix spike duplicate (MS/Dup or MS/MSD) Documenting the effect of the matrix, for a given preparation batch consisting of similar sample characteristics, should include the analysis of at least one matrix spike and one duplicate unspiked sample or one matrix spike/matrix spike duplicate pair.

  • Environmental Samples Site Area Notes: AFB = Air Force Basebgs = Below ground surface BVC = Base Ventura County FFA = Fuel Farm AreaMS/MSD = Matrix spike and matrix spike duplicate NEX = Naval Exchange PC = Petroleum company PRA = Phytoremediation Area SFT = Slop Fill Tank a Field triplicates were collected at a frequency of one per depth interval in each sampling area except the B-38 Area.

  • Matrix spike experiments established that calibration curves in whole blood and water have the same slope.

  • To approve the contractor’s work program, method statements, sources of materials, etc.

  • Matrix spike and matrix spike duplicate Results of the MS/MSD analyses performed in the validation study are used to develop the MS/MSD QC acceptance criteria for Tier 2.

  • Matrix spike and matrix spike duplicate Results of the MS/MSD analyses performed in the Tier 3 validation study are used to develop the MS/MSD QC acceptance criteria for Tier 3.

  • Matrix spike and matrix spike duplicate As noted above, an IPR test must be performed in both an appropriate reference matrix and the sample matrix of interest for Tier 1 new methods.

  • Matrix spike results will be entered into Field Accomplishment Computerized Tracking System (FACTS) and data will be evaluated and classified according specific food, and matrix spike results.


More Definitions of Matrix spike

Matrix spike means a sample prepared by adding a known quantity of analyte and subjecting the sample to the entire analytical procedure to determine the ability to recover the known analyte or compound. The spiked concentration must be at a low to mid-range concentration of the calibration curve for the target analyte.
Sample 1Sample 2Sample 3
Matrix spike or “MS” means a sample prepared by adding a known quantity of analyte to an aliquot of an environmental sample and subjecting it to all of the sample-processing steps of a method. The purpose of the matrix spike is to determine the ability to recover the known analyte in the environmental sample.
Sample 1Sample 2
Matrix spike means a sample prepared by adding a known level, concentration, mass or quantity of analyte to a specified amount of matrix for which an independent estimate of the assayed analyte concentration, mass or quantity is available, and generally used to determine the effect of a matrix on a method’s recovery efficiency.
Sample 1
Matrix spike means a sample prepared by adding a known quantity of analyte and subjecting the sample to the entire analytical procedure to determine the ability to recover the known analyte or compound.
Sample 1
Matrix spike means a sample prepared to determine repetitive tasks.
Sample 1
Matrix spike means a sample prepared to determine the effect of the matrix on a method's recovery efficiency by adding a known amount of the target analyte to a specified amount of matrix sample for which an independent estimate of the target analyte concentration is available.
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