Table 2 External calibration curves carried out in headspace and by liquid addition of standards to stir bars
From: A comparison of semi-quantitative methods suitable for establishing volatile profiles
External calibration curve | Standard | Retention time | Calibration curve | r2 | Unit |
|---|---|---|---|---|---|
Standards to sampling system (1B) | Ocimene (E) | 6.60 | 6.299·108 × | 0.98 | mg |
Ocimene (Z) | 6.80 | 1.196·109 × | 0.98 | ||
Acetophenone | 7.20 | 5.247·108 × | 0.96 | ||
Methyl benzoate | 7.77 | 1.345·109 × | 0.96 | ||
Methyl cinnamate | 12.61 | 2.891·109 × | 0.99 | ||
Standards to stir bars (2) | Ocimene (E) | 6.54 | 3.424·106 × − 9.325·104 | 0.99 | µg |
Ocimene (Z) | 6.81 | 8.318·106 × − 1.397·105 | 0.99 | ||
Acetophenone | 7.18 | 1.052·107 × − 2.693·105 | 0.99 | ||
Methyl benzoate | 7.78 | 1.181·107 × − 1.009·105 | 0.99 | ||
Methyl cinnamate | 12.66 | 1.762·107 × − 5.245·105 | 1 |