Determination of Macroporous Resin Residues in Extract of Swertia pseudochinensis by Headspace Gas Chromatography

Abstract:

Objective: To Establish a method for detecting residues of macroporous resin in extract of Swertia pseudochinensis. Method: Headspace-GC was used to determine the content of macroporous resin residues of n-hexane,benzene,methylbenzene,dimethylbenzene,phenylethylene,diethylenzene,divinylbenzene in extract of S. pseudochinensis. Result: All of seven residues were separated and good linear responses were obtained in the mass concentration with r between 0.994 0 to 0.999 7.The average recoveries of these 7 residues were in the range of 93.4%-98.4% with RSD<10%,these 7 residues were not detected in three batches of samples. Conclusion: This analytical method was convenient and accurate with good repeatability,it could be used to determine organic solvents residues in macroporous resin.