Table 2.
Comparison with other photoacoustic spectroscopy trace H2S detectors.
| Authors | Detection method/ Background gas | λ/Power | α (cm-1) | NNEA (cm-1 W/Hz1/2) |
|---|---|---|---|---|
| Sampaolo et al.[53] | QEPAS/N2 | 104.6 µm/150 mW | 3.12 | 3.1 × 10−8 |
| S. Viciani et al.[19] | QEPAS/N2 | 2.6 µm/3 mW | 9.25 × 10−2 | 2.4 × 10−9 |
| Helman et al.[50] | QEPAS/N2 | 8.1 µm/160 mW | 6.70 × 10−2 | 3.05 × 10−9 |
| Yin et al.[54] | Condenser microphone/SF6 | 1.58 µm/1.35 W | 8.18 × 10−3 | 2.9 × 10−8 |
| Dong et al.[55] | Condenser microphone/SF6 | 1.58 µm/1.4 W | 8.18 × 10−3 | 2.9 × 10−9 |
| This work | F-P interference/SF6 | 1.57 µm/1 W | 8.25 × 10−3 | 2.49 × 10−9 |