Laboratory Fortified Sample Matrix

Term · Environment · MLC-T-ENV-015232

1. An aliquot of a preserved environmental field sample to which known quantities of the method analytes are added in the laboratory. The LFSM is processed and analyzed exactly like a sample, and its purpose is to determine whether the sample matrix contributes bias to the analytical results. The background concentrations of the analytes in the sample matrix must be determined in a separate aliquot and the measured values in the LFSM corrected for background concentrations. {OW/TSC}

2. An aliquot of a preserved environmental field sample to which known quantities of the method analytes are added in the laboratory. The LFSM is processed and analyzed exactly like a sample, and its purpose is to determine whether the sample matrix contributes bias to the analytical results. The background concentrations of the analytes in the sample matrix must be determined in a separate aliquot and the measured values in the LFSM corrected for background concentrations.

Table 1. Record
Identifier	MLC-T-ENV-015232
Field	Environment
Subject	Policy and guidance
Abbreviation	LFSM
References	Forum on Environmental Measurements (FEM) Glossary

Record as JSON

{
  "id": "MLC-T-ENV-015232",
  "term": "Laboratory Fortified Sample Matrix",
  "field": "Environment",
  "definition": "1. An aliquot of a preserved environmental field sample to which known quantities of the method analytes are added in the laboratory. The LFSM is processed and analyzed exactly like a sample, and its purpose is to determine whether the sample matrix contributes bias to the analytical results. The background concentrations of the analytes in the sample matrix must be determined in a separate aliquot and the measured values in the LFSM corrected for background concentrations. {OW/TSC}\n\n2. An aliquot of a preserved environmental field sample to which known quantities of the method analytes are added in the laboratory. The LFSM is processed and analyzed exactly like a sample, and its purpose is to determine whether the sample matrix contributes bias to the analytical results. The background concentrations of the analytes in the sample matrix must be determined in a separate aliquot and the measured values in the LFSM corrected for background concentrations.",
  "abbreviation": "LFSM",
  "subject": "Policy and guidance",
  "references": [
    "Forum on Environmental Measurements (FEM) Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/laboratory-fortified-sample-matrix/"
}

Record 15,232 of 30,736 in Environment terminology (MLC-0121). Request the full dataset.