Table 6 Coefficient of variation for inter- and intra-day analysis
Analyte | Gas standard range | Intra-day CV, % | Inter-day CV, % | ||
|---|---|---|---|---|---|
Mean | Range | Mean, % | Range, % | ||
Acetaldehyde | 199.5–2000 | 14.3 | 8.4–25.2 | 14.5 | 8.6–26.1 |
Acetone | 50.8–499.9 | 7.6 | 3.7–14.5 | 7.2 | 4.7–12.1 |
1,3-Butadiene | 9.7–96.3 | 12.8 | 6.9–26.9 | 13.0 | 7.0–23.6 |
2-Butanone | 21.2–99.2 | 9.9 | 7.0–14.8 | 9.9 | 6.2–14.9 |
Benzene | 10–78.31 | 9.1 | 5.2–18.1 | 8.6 | 5.4–15.8 |
Isoprene | 98.6–594.6 | 3.7 | 2.5–6.5 | 4.2 | 3.1–5.7 |
Toluene | 15.2–99.5 | 7.0 | 4.4–12.8 | 7.0 | 4.8–12.0 |