Peak integration
Determining a peak's area by defining its start, end and baseline. The step where a purity figure is actually decided, and the one least often documented.
Related terms
- Baseline
- The detector signal in the absence of an eluting analyte. On a gradient it drifts, and where the baseline is drawn determines the integrated area.
- Drop-line integration
- Separating two overlapping peaks with a vertical line dropped from the valley between them. Unbiased when the peaks are of comparable size.
- Reporting threshold
- The area percent below which peaks are not reported. The index uses 0.05 %. Excluded peaks are excluded from the total, so purity is systematically overstated by their sum.
see also Peak integration · Drift
see also Valley-to-valley integration · Tangent skim
see also Peak integration · Identification threshold
Where this term appears
The glossary exists to make record pages readable without a chemistry degree. Every technical term on a report resolves here.
- Assay report records — the term appears in result tables, peak tables and provenance blocks
- Method references — where the measurement behind the term is defined
- All 22 glossary terms beginning with P