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- W2375489617 abstract "The method of gas chromatography for the accurate detection of pentachlorophenol in edible tissues of tilapia,freshwater shrimp,chinese mitten crab and cod were established by comparing the effects of n-hexane extraction times,methods of extraction on recoveries and derivative mode of operation for pentachlorophenol in sample pretreatments and optimizing the chromatographic conditions.The results showed that the target compounds were first extracted two times with n-hexane in an acidic medium,and then back extracted with potassium carbonate solution.The extract was derivatized with acetic anhydride,and the derivative was extracted with n-hexane.Finally,the gas chromatography with HP-5(30 m × 0.32 mm × 0.25 μm) column and the micro-cell electron capture detector was used for the determination.The working curves were linear(r=0.999 7) in the range of 0.2-100.0 μg/L.The detection limit of gas chromatography for pentachlorophenol was 0.6-1.0 μg/kg,the limit of quantitatition was 3.0-5.0 μg/kg.When spiked with 2 μg/kg,5 μg/kg and 10 μg/kg of pentachlorophenol,the average recoveries of pentachlorophenol were 76.1 %-106.4 % and the relative standard deviation(RSD) were 4.0 %-13.3 %.This method for gas chromatography,which was simple in preparation and easy in operation,would be suitable for determination of pentachlorophenol in groups of aquatic product samples." @default.
- W2375489617 created "2016-06-24" @default.
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- W2375489617 date "2011-01-01" @default.
- W2375489617 modified "2023-09-23" @default.
- W2375489617 title "Determination of pentachlorophenol and its sodium salt residues in aquatic product by gas chromatography" @default.
- W2375489617 hasPublicationYear "2011" @default.
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