Pct petroleum products and used oils - determination of pcbs and related products - part 3 : determination and quantification of polychlorinated terphenyls and polychlorinated benzyl toluenes content by gas chromatography using an electron capture detector 石油产品和用过的油. pcb和相关产品的测定.第3部分:用电子俘获探测器的气相色谱法测定和量化多氯三联苯