Determination of Glycerin from a Marketed Personal Care Product Using Gas Chromatography

Table 1

GC linearity.

Solutions	1	2	3	4	5
Concentration in mg/mL	1.25	2.50	5.01	7.51	10.02
Replicate 1 (peak area)	735.54	1722.89	3985.59	6011.08	8766.39
Replicate 2 (peak area)	731.92	1759.69	3966.59	6109.77	8765.87
Replicate 3 (peak area)	735.66	1753.96	3985.56	6115.84	8788.37
Average	734.37	1745.51	3979.25	6078.89	8773.54
S.D.	2.12	19.79	10.96	58.81	12.84
%RSD	0.20	0.25	0.08	0.13	0.04