| 阴离子交换色谱法测定硫磺熏制姜中亚硫酸盐 |
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| 引用本文： | 韩强,王宗花,郭新美,夏建飞,张菲菲,夏延致,丁明玉.阴离子交换色谱法测定硫磺熏制姜中亚硫酸盐[J].分析试验室,2012(3):29-32. |
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| 作者姓名： | 韩强 王宗花 郭新美 夏建飞 张菲菲 夏延致 丁明玉 |
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| 作者单位： | 青岛大学纤维新材料与现代纺织实验室国家重点实验室培育基地;清华大学化学系 |
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| 基金项目： | 国家自然科学基金(20975056,81102411);青岛市科技计划基础研究(091330jch);山东省自然基金(ZR2011BZ004,ZR2011BQ005);NSFC-JSPS中日合作与交流(21111140014);山东省泰山学者(TS20070711)项目资助 |
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| 摘 要： | 建立了阴离子交换色谱分离、抑制型电导检测分析硫磺熏制生姜(简称硫磺姜)中亚硫酸盐的方法。使用NJ-SA-4A阴离子交换分析柱,淋洗液为1.92mmol/L Na2CO3-1.80mmol/L NaHCO3-2%(体积分数)丙酮。通过在样品提取液中加入三乙醇胺,有效地维持了亚硫酸盐的稳定性、并能提高方法的选择性。SO23-在0.02～2.00mg/L范围内线性良好,相关系数为0.9998,峰面积的相对标准偏差为1.9%。方法的检出限为0.015mg/L,加标回收率为84.0%～93.5%。该方法为生姜的市场监测提供了有效的方法。
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| 关 键 词： | 离子色谱 硫磺姜 亚硫酸盐 三乙醇胺 |
Determination of sulfite in sulfuring ginger by anion-exchange chromatography |
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| HAN Qiang,WANG Zong-hua,GUO Xin-mei,XIA Jian-fei,ZHANG Fei-fei,XIA Yan-zhi,and Ding Ming-yu.Determination of sulfite in sulfuring ginger by anion-exchange chromatography[J].Chinese Journal of Analysis Laboratory,2012(3):29-32. |
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| Authors: | HAN Qiang WANG Zong-hua GUO Xin-mei XIA Jian-fei ZHANG Fei-fei XIA Yan-zhi and Ding Ming-yu |
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| Institution: | 1.Laboratory of Fiber Materials and Modern Textile,the Growing Base for State Key Laboratory,Qingdao University,Qingdao 266071;2.Department of Chemistry,Tsinghua University,Beijing 100084) |
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| Abstract: | A method for the determination of sulfite in sulfuring ginger by anion-exchange chromatography with suppressed conductivity detection was developed.The chromatographic separation was carried out on a NJ-SA-4A anion exchange column,using 1.92 mmol/L Na2CO3 + 1.80 mmol/L NaHCO3 +2%(V/V) acetone as mobile phase.Triethanolamine(TEA) was added in the samples to prevent oxidation of the sulfite and to eliminate the interference of metal ions.The linear range of the calibration curve was 0.02-2.00 mg/L with a correlation coefficient of 0.9998.The RSD for the peak area of sulfite anion was 1.9%,and the detection limit of sulfite anion was 0.015 mg/L.The spiked recoveries were between 84.0% and 93.5%.This method was easy to be operated and had a better accuracy.It provides a reliable basis for the detection of sulfuring ginger. |
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| Keywords: | Ion chromatography Sulfuring ginger Sulfite Triethanolamine |
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