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- W2370109030 abstract "Objective To establish a method for the determination of residue of sulfur dioxide in traditional Chinese medicine. Methods The samples were extracted by wet distillation under acidic conditions,with 3% hydrogen peroxide as absorption liquid, and then determined by ion exchange- ion chromatography conductivity detection. The determination was performed on IonPac@ AS11- HC( 250 mm × 4 mm) ion exchange column with mobile phase consisted of 20 mmol / L KOH at a flow rate of 1 ml / min, the column temperature was set at 30 ℃,the detection cell temperature was set at 35 ℃. Results The linear range of sulphate was 1 ~ 200 μg / ml( r = 0. 999) with an average recovery of 80. 80% ~ 103. 07%( RSD = 1. 73% ~ 7. 62%). Conclusion The method is sensitive,specific,automatic and simple." @default.
- W2370109030 created "2016-06-24" @default.
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- W2370109030 date "2014-01-01" @default.
- W2370109030 modified "2023-09-26" @default.
- W2370109030 title "Study on comparison the determination of residue of sulfur dioxide in traditional Chinese medicine by ion chromatography and titration" @default.
- W2370109030 hasPublicationYear "2014" @default.
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