HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY (H PLC) AND GAS-CHROMATOGRAPHY(GC) AS METHODS IN PLASTIC MATERIAL ANALYSIS

In plastic material analysis HPLC and GC can be used for residue analy sis as well as for quality control. Both chromatographic methods are d istinguished by their sensitivity. Gas chromatography is employed if t he compounds to be determined can be transported by a gas without prob lems. HPLC is used for analysis of compounds in solution. In the follo wing we will present two plastic material applications. Moreover, the respective sample pretreatment and the analysis method will be shown. The first application is the analysis of plasticizers (phthalic acid e sters) by HPLC as well as by GC. The second example is the determinati on of solvents like pentane in polypropylene and polyethylene plastic films by the GC headspace method.