Head-Space GC Determination of Formamide in Children′s Articles Made of Plastic of Copolymer of Ethylene and Vinyl Acetate

Head-space GC was applied to the determination of formamide in children′s articles made of plastic of copolymer of ethylene and vinyl acetate. The equilibrium temperature and time of head space sampler were set at 160 ℃ and 40 min respectively. The analyte was separated on DB-Wax column (0.53 mm×30 m,1 μm) and detected by FID. N,N-Dimethylformamide was used as internal standard. Linearity range was found between 1 μg and 646 μg of formamide. The proposed method was applied to the analysis of floor pad sample of the plastic copolymer, giving values of recovery obtained by standard addition method and RSD′s (n=6) in the ranges of 80.9%-82.8% and 4.1%-4.5% respectively.