Medicinal Plant

2015, v.6(Z2) 30-33

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Detection of SO_2 Residual in FLOS CHRYSANTHEMI by Accelerated Solvent Extraction/Ion Chromatography
Detection of SO_2 Residual in FLOS CHRYSANTHEMI by Accelerated Solvent Extraction/Ion Chromatography

Jianyang ZHANG;Guoqing WANG;Shouzhen JIN;Guicen MA;Liyan CHEN;Xin LIU;Chengyin LU;

摘要(Abstract):

[Objective] To discuss the detection method for SO2 residual in FLOS CHRYSANTHEMI. [Methods] Accelerated Solvent Extraction / Ion Chromatography was used to detect the SO2 residual in FLOS CHRYSANTHEMI. Alkaline solution was used as the extracting solution of grinded sample. After extraction by accelerated solvent extraction apparatus and purification by C18 solid phase extraction,the sample was isolated by IonP ac AS9- HC ion chromatographic column with carbonate as the leacheate. Detection was carried out by electrical conductivity detector. [Results] SO2 had good linear relationship within the range of 0. 5- 50 mg / L( r2= 0. 999 7). The quantitative lower limit( LOQ) and and detection limit( LOD) were 0. 17 and 0. 05 mg/L,respectively. With blank sample as the matrix,the average recovery rates at high,middle and low dosages were 82. 9%- 92. 6% with RSD( n = 6) less than 5. 0%. [Conclusions]Compared with the traditional method,this method had the advantages of high extraction rate and automation degree,and was suitable for the large-scale detection of SO2 residual in FLOS CHRYSANTHEMI.

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基金项目(Foundation): Supported by the Special Fund for Modern Agricultural Industry Technology System(nycytx-26);; the Innovative Research Team in Chinese Academy of Agricultrural Sciences(CAAS-ASTIP-2014-TRICAAS);; the Fund for Testing and Analyzing of Zhejiang Province(2014C37041)

作者(Author): Jianyang ZHANG;Guoqing WANG;Shouzhen JIN;Guicen MA;Liyan CHEN;Xin LIU;Chengyin LU;

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