| 用Alltech DS-Plus~(TM)离子色谱抑制器测定有机弱酸 |
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| 引用本文： | 张培敏,朱岩,徐育.用Alltech DS-Plus~(TM)离子色谱抑制器测定有机弱酸[J].化学世界,2003,44(1):14-16. |
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| 作者姓名： | 张培敏 朱岩 徐育 |
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| 作者单位： | 1. 浙江大学西溪校区化学系,浙江,杭州,310028
2. 上海天美仪器公司,上海,200030 |
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| 基金项目： | 浙江省自然科学基金资助项目(201089) |
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| 摘 要： | 葡萄糖酸、乙酸、甲酸、丙酮酸、山梨酸等有机弱酸在流速为 1 m L/ min,淋洗液的浓度为 1mmol/ L Na HCO3 ,用 Alltech DS- Plus TM抑制器时能很好地检测。弱电离物质检测限分别为 0 .5 0 0μg/ m L、0 .1 45 μg/ m L、0 .0 97μg/ m L、0 .1 95 μg/ m L、1 .0 78μg/ m L(S/ N=3 ) ,具有良好的线性关系和重现性。对饮料样品进行测定 ,结果令人满意。
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| 关 键 词： | 有机弱酸 离子色谱 抑制器 |
| 文章编号： | 0367-6358(2003)01-0014-03 |
Determination of Organic Weak Acid with the Alltech DS-PlusTM Ion Chromatograph Suppressor |
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| ZHANG Pei-min ,ZHU Yan ,XU Yu.Determination of Organic Weak Acid with the Alltech DS-PlusTM Ion Chromatograph Suppressor[J].Chemical World,2003,44(1):14-16. |
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| Authors: | ZHANG Pei-min ZHU Yan XU Yu |
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| Affiliation: | ZHANG Pei-min 1,ZHU Yan 1,XU Yu 2 |
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| Abstract: | Organic weak acid, such as gluconic acid, acetic acid, formic acid koto-acetic acid and sorbic acid, can be separated by ion chromatography using 1 mmol/L NaHCO 3 as eluent at a flow-rate of 1 mL/min. The detection limits (S/N=3) of the organic weak acids are 0.500 μg/mL、0.145 μg/mL、0.097 μg/mL、0.195 μg/mL、1.078 μg/mLL, respectively, experiment results show that linear relationship and repeatability are good. The method is used to determine organic weak acid in drinks and the results are satisfactory. |
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| Keywords: | organic weak acid ion chromatography suppressor |
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