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| Determination of Organic Acids in Extraction Liquor from Hot-water Prehydrolysis of Eucalyptus by Ion Chromatography |
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| DOI：10.11980/j.issn.0254-508X.2014.05.004 |
| Key Words:ion chromatography organic acid eucalyptus hot-water prehydrolysis |
| Fund Project:国家自然科学基金资助项目(31370584)；制浆造纸工程国家重点实验室开放基金项目(201113)；辽宁省教育厅项目(L2012185)。 |
| Author Name | Affiliation | | 崔金龙 | 大连工业大学,辽宁大连,116034 | | 郭怀泽 | 大连工业大学,辽宁大连,116034 | | 李海明* | 大连工业大学,辽宁大连,116034 | | 周景辉 | 大连工业大学,辽宁大连,116034 | | 韩 颖 | 大连工业大学,辽宁大连,116034 | | 毕佳捷 | 大连工业大学,辽宁大连,116034 | | 王 安 | 大连工业大学,辽宁大连,116034 |
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| Abstract:A method for the determination of organic acids in extraction liquor from hot-water prehydrolysis of eucalyptus by an ion chromatography was developed. After simply treatment of the samples, the extraction liquor was analyzed using Dionex ICS-5000 ion-exchange chromatography with conductivity detector. The experimental results showed that acetic acid, formic acid and levulinic acid in the extraction liquor were separated on a IonPacTM AS11-HC anion-column (250 mm×4 mm) by using 2.0 mmol/L NaOH as mobile phase to isocratically elute at a flow rate of 1.0 mL/min in 15 minutes. Detection limits of acetic acid, formic acid and levulinic acid were 12.5 μg/L, 6.3 μg/L and 18.8 μg/L, respectively. The correlation coefficients were 0.9999, 0.9997 and 0.9990, respectively. Relative standard deviations (RSD) of repeated analyses were 1.91%, 0.82% and 1.96%, respectively. Recovery rates were 98.02%, 103.00% and 96.00%, respectively. The method developed was fast and easy to operate, with high accuracy and good repeatability. |
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