" /> preconcentration coefficient - CISMeF





Preferred Label : preconcentration coefficient;

Detailed label : preconcentration coefficient of a desired microcomponent in trace analysis;

IUPAC definition : This is defined as \[K \frac{Q_{{T}}/Q_{{M}}}{Q_{{T}} {{o}}/Q_{{M}} {{o}}}\] where Q T and Q T o are the quantities of the microcomponent in the concentrate and in the sample, respectively (mass units or concentration units), and Q M o and Q M and are the quantities of the matrix before and after preconcentration, respectively. If the recovery is 100%, K QMo/QM. The terms enrichment coefficient and enrichment factor are not recommended.;

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This is defined as \[K \frac{Q_{{T}}/Q_{{M}}}{Q_{{T}} {{o}}/Q_{{M}} {{o}}}\] where Q T and Q T o are the quantities of the microcomponent in the concentrate and in the sample, respectively (mass units or concentration units), and Q M o and Q M and are the quantities of the matrix before and after preconcentration, respectively. If the recovery is 100%, K QMo/QM. The terms enrichment coefficient and enrichment factor are not recommended.

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30/07/2025


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