Table 3. Figures of Merit for Different SERS Methodsa.
| method | N | RMSEP | SEP | BIAS | 
|---|---|---|---|---|
| cAg@532 | 25 | 24% | 21% | 11% | 
| cAg@785 | 35 | 19% | 19% | –4% | 
| cAu@785 | 25 | 13% | 13% | 3% | 
| sAg@532 | 35 | 29% | 27% | 11% | 
| sAg@785 | 30 | 13% | 12% | 4% | 
| sAu@785 | 25 | 28% | 29% | –2% | 
Normalization (as range scaling) was carried out to compare different methods; non-normalized RMSEP, BIAS, and SEP values are available in Supporting Information Table S8 (see Methods for details). N is the number of residuals for each method.