Table 1 Comparison of multi-analyte and established analysis methods
Analyte | Mean ± SD value from established method, per gram basis (N=5) | Mean ± SD value from multi-analyte method, per whole 1 g pouch basis (N=5) | Percentage change relative to established method | p value |
|---|---|---|---|---|
Water (%) | 48.7±1.38 | 49.4±0.90 | 1.4 | 0.391 |
NAB (ng) | 22.7±0.66 | 21.6±1.05 | −4.8 | 0.092 |
NAT (ng) | 377.7±5.26 | 382.2±5.91 | 1.2 | 0.246 |
NNK (ng) | 166.1±4.25 | 165.2±6.19 | −0.5 | 0.783 |
NNN (ng) | 498.9±18.03 | 495.6±23.10 | −0.7 | 0.811 |
Nicotine (mg) | 8.2±1.00 | 9.9±0.13 | 20.2 | 0.021 |
Propylene glycol (mg) | 35.7±0.58 | 35.3±0.43 | −1.1 | 0.258 |
Sodium (mg) | 21.5±0.29 | 21.3±0.75 | −0.9 | 0.610 |
Chloride (mg) | 29.8±1.18 | 29.1±1.57 | −2.3 | 0.486 |
Ammonium (μg) | 1358±32.0 | 1406±39.3 | 3.5 | 0.071 |
Nitrate (μg) | 1500±16.6 | 1462±12.8 | −2.6 | 0.004 |
pH | 8.5±0.02 | 8.5±0.01 | 0.5 | 0.002 |