GC Determination of Sodium Pentachlorophenol in Multi Environment Media of Poyang Lake Wetland

GC was applied to the determination of sodium pentachlorophenol in environment media, i.e. sediment, carex cinerascens and water of Poyang lake wetland. After acidification, the sample was extracted with n-hexane and then reextracted with potassium carbonate solution. The derivatization was adopted with acetic anhydride and then the derivative was extracted with n-hexane. The quantitative and qualitative analysis were used by GC and GC-MS respectively. The analyte was separated on WondaCAP 1 chromatographic column (30 m×0.32 mm, 0.25 μm) and detected by ECD in GC determination. Linear relationship between values of peak area and mass concentration of sodium pentachlorophenol was kept in the range of 50.0-2 000 ng·L^-1, with detection limit (3S/N) of 15.0 ng·L^-1. Values of recovery found by standard addition method were in the range of 94.1%-106%, and values of RSDs (n=5) were in the range of 0.50%-2.2%.