Direct Determination of Polychlorinated-Biphenyls in Automotive Shredder Residues by Gas Chromatography-Mass Spectrometry

• 作者: Luis María Polo Díez María de los D. E. Otero Mohamed N. K. Sayadi
• 来源期刊: 分析科学方法和仪器期刊(英文)
• 学科: 化学
• 关键词: PCBS SOLID-LIQUID Extraction AUTOMOTIVE SHREDDER RESIDUES Gas Chromatography-Mass SPECTROMETRY (GC-MS)
• 年，卷（期）: fxkxffhyqqkyw,（2）
• 页码范围: 90-97
• 页数: 8页
• 分类号: O6

摘要

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.