Calculate Mass Recovery — measure_sec_recovery • measure.sec

Calculates the mass recovery (percent of injected mass detected) for SEC analysis.

Usage

measure_sec_recovery(detected_mass, injected_mass, units = "mg")

Arguments

detected_mass: Mass detected by integration of the chromatogram.
injected_mass: Mass injected onto the column.
units: Units for mass values. Both must be in the same units.

Value

Numeric recovery percentage (0-100+).

Details

Mass recovery verifies that the analytical system is detecting all of the injected sample:

$$\% Recovery = \frac{m_{detected}}{m_{injected}} \times 100$$

Interpretation:

95-105%: Excellent recovery (typical acceptance)
90-95% or 105-110%: Acceptable (investigate if persistent)
< 90%: Low recovery - possible column adsorption, precipitation
> 110%: High recovery - calibration issue, interference

Common Causes of Low Recovery:

Sample adsorption to column packing
Sample precipitation or aggregation on-column
Detector calibration drift
Integration baseline errors
Sample degradation

See also

Other sec-qc: measure_sec_asymmetry(), measure_sec_column_performance(), measure_sec_plate_count(), measure_sec_resolution(), measure_sec_suitability()

Examples

# Calculate recovery
measure_sec_recovery(
  detected_mass = 0.195,
  injected_mass = 0.200
)
#> [1] 97.5
# Returns 97.5%