GC/MS及保留指数法测定底泥中的多环芳烃

Identification of PAH in the Suzhou River Bed Sediment by GC/MS and PAH Retention Index System

对苏州河底泥样品采用正己烷∶丙酮（１∶１）索氏提取，萃取液经浓缩分段后加入内标物萘、菲、艹屈，测定并计算各多环芳烃保留指数，结合ＧＣ／ＭＳ法，从该底质中鉴别出４５种多环芳烃及同分异构体．

The bed sediment sample was extracted by n-hexane:acetonce (1∶1) using Soxhelet apparatus. The extract was concentrated, fractionated, added internal standards naphthalene. phenanthrene. determined and calculated retention of every PAH. Combining with GC/MS 45 PAHs and isomer was identified from the bed sediment. PAH retention index conform to literature.