IC Determination of 5 Acids in Hydrolysis Products of Cellulose
摘 要
采用离子色谱法测定纤维素水解产物中乙酰丙酸、甲酸、乙酸、丙酸、硫酸等5种酸的含量。纤维素水解产物样品稀释后,以氢氧化钾溶液为淋洗液,抑制型电导检测器测定。5种酸在一定的质量浓度范围内与其峰面积呈线性关系,方法的检出限(3S/N)在0.001~0.008 mg·L-1之间。方法用于纤维素水解产物样品的分析,测定值的相对标准偏差(n=5)在0.45%~4.8%之间。以空白样品为基体进行加标回收试验,所得回收率在91.0%~109%之间。
Abstract
IC was applied to the determination of 5 acids, i.e. levulinic acid, formic acid, acetic acid, propanoic acid and H2SO4 in hydrolysis products of cellulose. The sample of hydrolysis products of cellulose was diluted. Potassium hydroxide solution was used as eluant, and restraining conductance detector was used in determination. Linear relationships between values of peak area and mass concentration of the 5 acids were kept in definite ranges. Detection limits (3S/N) found were ranged from 0.001 to 0.008 mg·L-1. The proposed method was applied to the analysis of the sample of hydrolysis products of cellulose, giving values of RSD's (n=5) in the range of 0.45%-4.8%. On the base of blank sample, test for recovery was made by standard addition method; values of recovery found were in the range of 91.0%-109%.
中图分类号 O657.7 DOI 10.11973/lhjy-hx201705026
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收稿日期 2016/6/20
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备注姜丽燕(1984-),女,浙江兰溪人,博士研究生,主要从事石油化工领域的分析技术开发,jiangly.sshy@sinopec.com
引用该论文: JIANG Liyan,LI Jiwen,WANG Chuan. IC Determination of 5 Acids in Hydrolysis Products of Cellulose[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2017, 53(5): 603~606
姜丽燕,李继文,王川. 离子色谱法测定纤维素水解产物中5种酸的含量[J]. 理化检验-化学分册, 2017, 53(5): 603~606
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参考文献
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【2】朱晨杰,张会岩,肖睿,等.木质纤维素高值化利用的研究进展[J].中国科学:化学, 2015,45(5):454-478.
【3】BOZELL J J, MOENS L, ELLIOTT D C, et al. Production of levulinic acid and use as a platform chemical for derived products[J]. Resource, Conservation and Recycling, 2000,28:227-239.
【4】王义刚,聂小安,刘振兴.乙酰丙酸的制备及其应用前景分析[J].生物质化学工程, 2013,47(5):45-50.
【5】张信凤,侯晓玲,黎薇,等.光度法及离子色谱法测定驱油剂中硫酸根含量——联合运用盐析法及活性炭吸附法除去其复杂有机物基体干扰[J].理化检验-化学分册, 2011,47(8):882-884.
【6】王荔,宋国新,邓春晖.阴离子交换离子色谱法测定卷烟纸中乙酸盐、磷酸盐和柠檬酸盐含量[J].理化检验-化学分册, 2009,45(7):815-817.
【7】韩宝华,郑鸿.离子色谱法测定放射性废液中硫酸根[J].理化检验-化学分册, 2008,44(2):177-180.
【8】隋小玉,林鹿.离子色谱法测定葡萄糖水解液中乙酰丙酸的含量[J].食品科技, 2010,35(3):281-284.
【9】崔金龙,郭怀泽,李海明,等.桉木热水预水解液有机酸离子色谱分析[J].中国造纸, 2014,33(5):20-23.
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