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.
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.
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.
Examples of Matrix spike in a sentence
J Matrix spike and/or matrix spike duplicate criteria was not met.
Matrix spike, duplicate, and blank samples were analyzed by the laboratory, and the resulting data were provided to DTSC and EPA.
Matrix spike recovery from 3Q18 and 4Q18 Tank 50 samples was 93.3% and 97.9%.
Matrix spike samples are also duplicated in the laboratory and then analyzed in an identical manner by the laboratory to assess sample reproducibility and the laboratory’s internal precision.
More Definitions of Matrix spike
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.
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.
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.
Matrix spike means a sample prepared to determine repetitive tasks.