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 |