GC Determination of Harmful Substances in Correction Fluids with Capillary Chromatographic Column

Capillary column-gas chromatography with ECD was applied to the analysis of correction fluids for harmful constitutents.Sample of correction fluid was diluted with the non-interfering solvent,n-heptane,and 5 chloro-alkanes,namely,dichloromethane,trichloromethan,carbon tetrachloride,1,1-dichloroethane and 1,1,1-trichloroethane,which were harmful to human healthy,were determined with their detection limits (3S/N) in the range from 0.001 to 10.0 mg·kg-1.Tests for precision and recovery of the method were made,giving values of RSD′s (n=6) in the range of 2.45%-3.01%,and values of recovery in the range of 97.6%-104.0%.