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DionexICS-3000型离子色谱仪分析检测。结果硫酸根在0．00005～2gg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。
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 μg（r=l.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.
出处
《中国现代应用药学》
CAS
CSCD
2012年第11期1025-1028,共4页
Chinese Journal of Modern Applied Pharmacy
关键词
浙贝母
二氧化硫
离子色谱法
Fritillaria thunbergii
sulfur dioxide
ion chromatography
