采用气相色谱-脉冲火焰光度检测器(GC - PFPD)，对几种催化裂化汽油中的硫化物进行了定性和定量研究。
Gas chromatography-pulsed flame Photometric Detector (GC-PFPD) was used for the qualitative and quantitative analysis of sulfur compounds in several fluid catalytic cracking gasoline.
当催化剂栓柱通过管道时，它遮断光路，因此检测器记录下的光强降低。
When a catalyst plug passes through the conduit it blocks the light path and thus the light intensity recorded by the detector drops.
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