Table 1. Comparison of Method Performance Metrics between Liquid Injection Used in Organic Solvent Extraction and Thermal Desorption (by Direct Sample Introduction) GCMS Analysis of TPB.
| performance metric | solvent extraction | thermal desorption |
|---|---|---|
| analysis time per sample (h) | 5 | 1.5 |
| solvent used per sample (mL) | 50 | <5 |
| linear calibration range (pg) | 40–800 | 17–10 000 |
| limit of detection (pg) | 38 | 16 |
| correlation coefficient (R2) | >0.999 | >0.999 |
| spike recovery (%), n = 6 | 80–106 | 99–106 |