a b R2

Calibration curve 1

0.0296 0.0372 0.9995
Calibration curve 2 0.0304 0.0215 0.9995
Calibration curve 3 0.0294 0.0473 0.9993
Calibration curve C 0.0298 0.0354 0.9992
Table 3: Statistical linearity parameters of GC method.