离子色谱法测定水汽中有机酸和无机阴离子
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摘要
提出了采用离子色谱法同时检测热力系统水汽中的甲酸、乙酸、丙酸、丁酸、乳酸及无机阴离子。选用IonPac AS11-HC阴离子分析柱对样品进行分离,并用KOH溶液作为淋洗液进行梯度淋洗。研究表明,9种组分的质量浓度在0.05～0.8 mg/L范围内呈线性,方法检出限为0.009～0.02 mg/L,各组分测量值精密度为0.77%～1.50%。采用该方法测定腐殖酸的高温分解水样,并进行实际样品回收率试验,测得回收率在85.0%～110%。
This study proposed a new method for simultaneous determination of formic acid,acetic acid,propionic acid,butyric acid,lactic acid and inorganic anions in the steam by ion chromatography. The chromatographic separation was performed on the IonPac AS11-HC analytical column. Meanwhile, KOH solutions with various concentrations were used as eluent in the gradient elution. Results showed that there was a linear relationship when the mass concentration of nine components was in the range of 0.05-0.8 mg/L. Besides, the detection limit of this method was 0.009-0.02 mg/L, and the precision was between 0.77%-1.50%. Finally, the method was applied to measure the decomposition products of humic acid, and the standard addition recoveries were 85.0%-110%.
This study proposed a new method for simultaneous determination of formic acid,acetic acid,propionic acid,butyric acid,lactic acid and inorganic anions in the steam by ion chromatography. The chromatographic separation was performed on the IonPac AS11-HC analytical column. Meanwhile, KOH solutions with various concentrations were used as eluent in the gradient elution. Results showed that there was a linear relationship when the mass concentration of nine components was in the range of 0.05-0.8 mg/L. Besides, the detection limit of this method was 0.009-0.02 mg/L, and the precision was between 0.77%-1.50%. Finally, the method was applied to measure the decomposition products of humic acid, and the standard addition recoveries were 85.0%-110%.
引文
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[2]林奇峰，刘明.有机物对供热发电机组水汽品质的影响[J].电力与电工，2013,33(2):51-55.
[3] Zhu Zhiping,Qiao Yue,Wang Nana,et al. Decomposition characteristics of humic acid in boiler maker-up water in power plants[J]. Applied Thermal Engineering,2018,128:1159-1164.
[4]蒋次清，胡守毅，李忠，等.微波辅助衍生化-气相色谱法测定烟草中非挥发性有机酸[J].理化检验：化学分册，2011,27(4):392-394.
[5] del Barrio M A,Hu J,Zhou P Z,et al. Simultaneous determination of formic acid and formaldehyde in pharmaceutical excipients using headspace GC/MS[J]. Journal of Pharmaceutical and Biomedical Analysis,2006,41(3):738-743.
[6]易娇，尹笃林，廉世勋，等.反相HPLC法同时测定烟草中的6种有机酸[J].烟草科技，2006(7):36-39.
[7]李芳，王丽丽，徐熠，等.离子色谱法测定葡萄糖中六种有机酸[J].吉林农业科学，2011,36(1):48-49.
[8]高媛媛，夏坪，许秀兰，等.离子色谱法同时测定废水中多种低分子有机酸[J].分析测试，2016,47(6):46-50.
[9]林华影，林风华，盛丽娜，等.淋洗液自动发生-离子色谱法同时测定食品中的21种有机酸[J].色谱，2007,25(1):107-111.
[10] Qiu Jinshu,Jin Xiaohong. Development and optimization of organic acid analysis in tobacco with ion chromatography and suppressed conductivity detection[J]. Journal of Chromatography A,2002,950:81-88.
[11] Geng Xiumei,Zhang Sufang,Wang Qian,et al. Determination of organic acids in the presence of inorganic anions by ion chromatography with suppressed conductivity detection[J]. Journal of Chromatography A,2008,1192:187-190.
[12]韩倩倩，曹顺安，詹艺，等.大体积进样-离子色谱法测定炉水中痕量阴离子[J].理化检验：化学分册，2014,48(11):1307-1309.
[13]张银平，王海燕，薛耀华，等.离子色谱测定河流中乙酸、丙酸和丁酸含量的研究[J].中国环境监测，2011,27(1):21-24.
[14]袁香英.利用加标回收率完成水环境的监测研究[J].环境科学与管理，2014,39(6):129-132.
[2]林奇峰，刘明.有机物对供热发电机组水汽品质的影响[J].电力与电工，2013,33(2):51-55.
[3] Zhu Zhiping,Qiao Yue,Wang Nana,et al. Decomposition characteristics of humic acid in boiler maker-up water in power plants[J]. Applied Thermal Engineering,2018,128:1159-1164.
[4]蒋次清，胡守毅，李忠，等.微波辅助衍生化-气相色谱法测定烟草中非挥发性有机酸[J].理化检验：化学分册，2011,27(4):392-394.
[5] del Barrio M A,Hu J,Zhou P Z,et al. Simultaneous determination of formic acid and formaldehyde in pharmaceutical excipients using headspace GC/MS[J]. Journal of Pharmaceutical and Biomedical Analysis,2006,41(3):738-743.
[6]易娇，尹笃林，廉世勋，等.反相HPLC法同时测定烟草中的6种有机酸[J].烟草科技，2006(7):36-39.
[7]李芳，王丽丽，徐熠，等.离子色谱法测定葡萄糖中六种有机酸[J].吉林农业科学，2011,36(1):48-49.
[8]高媛媛，夏坪，许秀兰，等.离子色谱法同时测定废水中多种低分子有机酸[J].分析测试，2016,47(6):46-50.
[9]林华影，林风华，盛丽娜，等.淋洗液自动发生-离子色谱法同时测定食品中的21种有机酸[J].色谱，2007,25(1):107-111.
[10] Qiu Jinshu,Jin Xiaohong. Development and optimization of organic acid analysis in tobacco with ion chromatography and suppressed conductivity detection[J]. Journal of Chromatography A,2002,950:81-88.
[11] Geng Xiumei,Zhang Sufang,Wang Qian,et al. Determination of organic acids in the presence of inorganic anions by ion chromatography with suppressed conductivity detection[J]. Journal of Chromatography A,2008,1192:187-190.
[12]韩倩倩，曹顺安，詹艺，等.大体积进样-离子色谱法测定炉水中痕量阴离子[J].理化检验：化学分册，2014,48(11):1307-1309.
[13]张银平，王海燕，薛耀华，等.离子色谱测定河流中乙酸、丙酸和丁酸含量的研究[J].中国环境监测，2011,27(1):21-24.
[14]袁香英.利用加标回收率完成水环境的监测研究[J].环境科学与管理，2014,39(6):129-132.