Method development for analysis pentachlorobenzene and hexachlorobutadiene in wastewater by GC/MS

This research presents the optimization of Pentachlorobenzene (PeCB) and Hexachlorobutadiene (HCBD) analysis in surface water.The study investigates the operating parameters of the GC/MS system and the clean-up, enrichment procedures based on liquid-liquid extraction using surrogate standard (Phenanthrene-D10).The calibration curve demonstrated a strong linear correlation (~0.994) within the concentration range of 25 -600g/L.The method detection limits were 0.008g/L for PeCB and 0.004g/L for HCBD.The recovery of the analytical procedure ranged from 85% to 114%.The method was applied to waste water samples showed good repeatability.