| 引用本文: | 周建良,施贝,罗镭,陈碧莲.离子色谱法测定浙贝母中二氧化硫残留量[J].中国现代应用药学,2012,29(11):1025-1028. |
| ZHOU Jianliang,SHI Bei,LUO Lei,CHEN Bilian.Determination of Residual Sulfur Dioxide in Fritillaria thunbergii Miq. by Ion-chromatography Method[J].Chin J Mod Appl Pharm(中国现代应用药学),2012,29(11):1025-1028. |
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| 摘要: |
| 目的 建立测定浙贝母中二氧化硫残留量的离子色谱法。方法 样品经定氮仪蒸馏、3%过氧化氢溶液吸收后，进Dionex ICS-3000型离子色谱仪分析检测。结果 硫酸根在0.000 05~2 mg内线性关系良好(r=1.000)；二氧化硫平均回收率为97.8%，RSD为2.1%(n=9)。结论 该方法快速、简便、灵敏，精密度、重复性良好，适用于浙贝母中二氧化硫残留量的检测。 |
| 关键词: 浙贝母 二氧化硫 离子色谱法 |
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| Determination of Residual Sulfur Dioxide in Fritillaria thunbergii Miq. by Ion-chromatography Method |
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ZHOU Jianliang, SHI Bei, LUO Lei, CHEN Bilian
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Zhejiang Institute for Food and Drug Control, Hangzhou 310004, China
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| Abstract: |
| OBJECTIVE To establish an ion-chromatography method for determination of residual sulfur dioxide in Fritillaria thunbergii Miq. METHODS The samples were analyzed by Dionex ICS-3000 ion-chromatography after distilled by steam, absorbed by 3% hydrogen peroxide. RESULTS The linear range of sulfate radical was 0.000 05-2 mg(r=1.000). The average recovery was 97.8% with the RSD of 2.1%(n=9). CONCLUSION The method is rapid, simple, sensitive, which shows good precision and reproducibility. It is suitable for determination of residual sulfur dioxide in Fritillaria thunbergii Miq. |
| Key words: Fritillaria thunbergii sulfur dioxide ion chromatography |
