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- W2386371304 abstract "[Objective] To establish a method for determination of 3 preservatives,benzoic acid,sorbic acid and ethyl-paraben in Chinese herb syrups simultaneously by gas chromatography.[Methods] The Chinese herb syrups sample was dissolved by methanol,extracted by ultrasonic and separated by packed column of DB-1(30 m×0.25 mm× 0.25 μm).[Results] The concentrations of 3 preservatives showed a positive correlation with the peak heights at 10~ 100 μg/mL for sorbic acid,10~100 μg/mL for benzoic acid and 5~50 μg/mL for ethyl-paraben.The correlative coefficients were 0.996 9 ~0.997 9.The detection limits were 1.2,1.8 and 0.7 μg/mL respectively.The recovery rates were 95.4%~103.7%.RSDs were 2.9%~3.7%.[Conclusion] The present method mentioned above can perfectly separate these three preservatives with some advantages,such as simple,accurate,sensitive and quick." @default.
- W2386371304 created "2016-06-24" @default.
- W2386371304 creator A5000110929 @default.
- W2386371304 date "2013-01-01" @default.
- W2386371304 modified "2023-09-26" @default.
- W2386371304 title "Simultaneous determination of preservatives content in Chinese herb syrups by gas chromatography" @default.
- W2386371304 hasPublicationYear "2013" @default.
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