Table 1 Rate of PC1 score change of 4-CB re-detection spectra and acetone-washed SERS substrate spectra
From: Sensitivity and Reusability of SiO2 NRs@ Au NPs SERS Substrate in Trace Monochlorobiphenyl Detection
4-CB detection order | 2nd time | 3rd time | 4th time | 5th time | 6th time |
Rate of PC1 score change (%) | 52.78 | 44.00 | 37.55 | 27.50 | 33.25 |
Acetone-washing order | 1st time | 2nd time | 3rd time | 4th time | 5th time |
Rate of PC1 score change (%) | 11.02 | 10.47 | 6.65 | 5.52 | 5.82 |