GC Determination of 10 Benzene-Homologous Solvents in Correctives

GC was applied to the determination of 10 benzene-homologous solvents in correctives. The sample of corrective was extracted ultrasonically with ethyl acetate for 30 min. The analytes in the extract were separated on DB-WAX capillary chromatographic column (30 m×0.32 mm, 0.25 μm) and detected by FID. Linear relationships between values of signal intensity and mass concentration of the 10 solvents were kept in the same range of 0.20-100.0 mg·L-1, with lower limits of determination (10S/N) in the range of 1.8-2.1 mg·kg-1. On the base of blank sample, test for recovery was made by standard addition method; values of recovery found were in the range of 90.3%-113%, with RSD′s (n=6) in the range of 1.8%-6.1%.