TITLE:
Direct Determination of Polychlorinated-Biphenyls in Automotive Shredder Residues by Gas Chromatography-Mass Spectrometry
AUTHORS:
María de los D. E. Otero, Mohamed N. K. Sayadi, Luis María Polo Díez
KEYWORDS:
PCBs; Solid-Liquid Extraction; Automotive Shredder Residues; Gas Chromatography-Mass Spectrometry (GC-MS)
JOURNAL NAME:
Journal of Analytical Sciences, Methods and Instrumentation,
Vol.3 No.2,
May
31,
2013
ABSTRACT:
An easy and rapid method is proposed for the determination of PCBs in automotive shredder residues, using gas chromatography combined with low resolution mass spectrometry (GC-MS). It is based on direct n-hexane solid-liquid extraction, subtracting background of the lineal aliphatic hydrocarbon interferences and integration of chromatographic peaks containing selected ion PCBs masses (256, 292 and 326 m/z), which are common in all PCBs formulations. Recoveries were in the 80% - 120% range; PCBs were detected and quantified in shredder samples from an automotive shredder industry, thus indicating the validity of the method.