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| 离子色谱法测定天麻中二氧化硫残留量 | |
| 引用本文： | 李继,徐长根,孟新芳,刘海静,郝武常.离子色谱法测定天麻中二氧化硫残留量[J].西北药学杂志,2012,27(3):212-213. |
| 作者姓名： | 李继 徐长根 孟新芳 刘海静 郝武常 |
| 作者单位： | 1. 陕西省食品药品检验所,西安,710061;陕西师范大学,西安,710062 2. 陕西省食品药品检验所,西安,710061 3. 陕西省新药审评中心,西安,710061 |
| 基金项目： | 陕西省科学技术研究发展计划项目(编号:2008K16-03 |
| 摘 要： | 目的建立离子色谱法测定天麻中二氧化硫残留量的检测方法。方法样品经30mL.L-1盐酸水溶液蒸煮,氮气作载气,导出后用30mL.L-1双氧水氧化吸收,再煮沸除去剩余的双氧水,用去离子水转移至25mL量瓶中,并稀释至刻度作为供试溶液,使用离子色谱仪分析。用A-SUPP5-150阴离子分析柱,3.2mmol.L-1碳酸钠溶液-1.0mmol.L-1碳酸氢钠溶液为淋洗液,流速为0.7mL.min-1;进样量为20μL。结果线性范围(以SO2计)为1.667～133.38μg.mL-1,平均回收率为98.0%。结论测定方法简便,精密度、重复性良好,准确度较高。 |
| 关 键 词： | 天麻 二氧化硫 离子色谱法 |
Study on the method for detection of residual sulfur dioxide in Gastrodiae rhizoma |
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| LI Ji , XU Changgen , MENG Xinfang , LIU Haijing , HAO Wuchang.Study on the method for detection of residual sulfur dioxide in Gastrodiae rhizoma[J].Northwest Pharmaceutical Journal,2012,27(3):212-213. | |
| Authors: | LI Ji XU Changgen MENG Xinfang LIU Haijing HAO Wuchang |
| Institution: | 1.Shaanxi Provincial Institute for Food and Drug Control,Xi′an 710061,China;2.College of Life Science Shaanxi Normal University,Xi′an 710062,China;3.The Centre of Food and Drug Evaluation and Registration of Shaanxi Province,Xi′an 710061,China) |
| Abstract: | Objective To establish an ion chromatographic method for the determination of residual sulfur dioxide in Gastrodiae rhizoma.Methods Steam from samples distilled by 30 mL·L-1 hydrochloric acid solution,transfered by N2,was absorbed by 30 mL·L-1 hydrogen peroxide.The absorption liquid was analyzed by ion chromatography.A-SUPP5-150 anion analytical column was used with an eluent consisted of 3.2 mmol·L-1 Na2CO3 and 1.0 mmol·L-1 NaHCO3 solution.The velocity of flow rate was 0.7 mL·min-1.Results Linear range was 1.667 ~133.38 μg·mL-1(calculated by SO2),and the average recovery was 98.0%.Conclusion The method is easy to operate and shows good reproducibility and accuracy for the determination of residual sulfur dioxide in Gastrodiae rhizoma. |
| Keywords: | Gastrodiae rhizoma sulfur dioxide ion chromatography |
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