Determination of hexachlorocyclopentadiene in water by HS-SPME-GC-MS
A headspace solid-phase microextraction gas chromatography-mass spectrometry(HS-SPME-GC-MS)method was established for the determination of hexachlorocyclopentadiene in water,with using headspace solid-phase microextraction injection,DB-1 chromatographic column separation,and gas chromatography/mass spectrom-etry detector detection.The effects of coating solid-phase extraction needles,inlet temperatures,solid-phase extrac-tion conditions,salt effects on the determination were systematically investigated,and the method was validated un-der the optimal experimental conditions.The results showed that hexachlorocyclopentadiene exhibited good linearity with chromatographic peak area within the mass concentration range of 0.1-10 µg/L,with a correlation coefficient of 0.997 and a detection limit of 0.03 µg/L.The actual surface water and wastewater samples were measured,and the monitoring result of wastewater sample was 0.5 µg/L,while the monitoring result of surface water sample was not de-tected.The actual samples were spiked with 0.5 µg/L and 1.0 µg/L,respectively.The recovery rate was 70%-87%,and the relative standard deviation was 4.14%-13.9%(n=6).This method was simple to operate,did not use organic solvents for extraction,had good precision and high accuracy,which could be used for rapid determination of hexa-chlorocyclopentadiene in industrial wastewater and surface water.
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维普
