色谱 ›› 2023, Vol. 41 ›› Issue (9): 799-806.DOI: 10.3724/SP.J.1123.2022.12014

• 技术与应用 • 上一篇    下一篇

亲水相互作用色谱-静电场轨道阱高分辨质谱法测定CO2吸收液中9种有机胺类化合物

唐泽坤1,2, 万慧慧1,*(), 李红2, 陈绍云2,*(), 赵金凤1, 孙玉明1, 蔡蕊1, 徐强1, 张华2,*()   

  1. 1.大连理工大学分析测试中心, 辽宁 大连 116024
    2.大连理工大学化工学院, 辽宁 大连 116024
  • 收稿日期:2022-12-30 出版日期:2023-09-08 发布日期:2023-09-15
  • 通讯作者: *E-mail:wanhuihui@dlut.edu.cn(万慧慧);E-mail:chensy@dlut.edu.cn(陈绍云);E-mail:zhanghua@dlut.edu.cn(张华).
  • 基金资助:
    国家自然科学基金项目(21505014)

Determination of nine organic amine compounds in CO2 absorption liquid by hydrophilic interaction liquid chromatography-electrostatic field orbitrap high resolution mass spectrometry

TANG Zekun1,2, WAN Huihui1,*(), LI Hong2, CHEN Shaoyun2,*(), ZHAO Jinfeng1, SUN Yuming1, CAI Rui1, XU Qiang1, ZHANG Hua2,*()   

  1. 1. Instrumental Analysis Center, Dalian University of Technology, Dalian 116024, China
    2. School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2022-12-30 Online:2023-09-08 Published:2023-09-15
  • Supported by:
    National Natural Science Foundation of China(21505014)

摘要:

二氧化碳(CO2)吸收捕集是实现我国碳达峰和碳中和目标的有效措施。有机胺类化合物被广泛用作工业回收CO2的吸收剂,建立有机胺类化合物的分析检测方法对于碳捕集与封存(CCS)技术和碳捕获、利用与封存(CCUS)技术的发展具有重要意义。本研究建立了以亲水相互作用色谱-静电场轨道阱高分辨质谱法同时测定CO2吸收液中9种有机胺类化合物的分析方法。样品以水作为溶剂,稀释后经0.22 μm尼龙滤膜过滤后,进样分析。采用Accucore HILIC色谱柱(100 mm×2.1 mm, 2.6 μm),在30 ℃条件下进行分离,流动相A为90%乙腈水溶液(含5 mmol/L甲酸铵和0.1%甲酸),流动相B为10%乙腈水溶液(含5 mmol/L甲酸铵和0.1%甲酸),梯度洗脱。采用电喷雾离子源(ESI),在正离子模式下进行测定,通过标准加入法进行定量分析。实验对比了不同色谱柱对有机胺类化合物的保留能力以及不同流动相的影响,并对方法进行了方法学验证。结果表明:9种有机胺类化合物在0.04~25000 ng/mL范围内线性关系良好,线性相关系数(R2)均≥0.9910;方法的检出限(LOD)为0.0004~0.0080 ng/mL,方法的定量限(LOQ)为0.0035~0.0400 ng/mL;在1、1.5、3倍样本浓度添加水平下,方法的平均回收率为85.30%~104.26%,相对标准偏差(RSD)为0.04%~7.95%。应用建立的方法对某项目现场样品的吸收废液进行检测,9种有机胺类化合物均能被有效检测。对实际样品进行稳定性测试,于4 ℃条件下,在48 h内RSD为0.10%~6.35%。该方法灵敏、准确、快速、简便,可为有机胺类化合物的检测提供参考,并为CO2捕集技术的开发和工业化应用提供有力的技术支持。

关键词: 亲水相互作用色谱, 静电场轨道阱高分辨质谱, 有机胺类化合物, CO2吸收剂

Abstract:

Carbon dioxide (CO2) absorption and capture is an effective measure to achieve the “dual carbon” goal of carbon peak and carbon neutrality in China. Organic amine compounds are widely used in the industrial separation and recovery of CO2. Thus, the establishment of analytical methods for organic amine compounds is of great significance for the research and development of carbon capture and storage (CCS) technology and carbon capture, utilization and storage (CCUS) technology. In this study, a method was developed for the determination of nine organic amine compounds in CO2 absorption liquid by hydrophilic interaction liquid chromatography (HILIC)-electrostatic field orbitrap high resolution mass spectrometry. The sample was diluted with water and filtered through a 0.22 μm nylon membrane before sampling and analysis. An Accucore HILIC column (100 mm×2.1 mm, 2.6 μm) was used for separation at 30 ℃. Gradient elution was conducted using 90% acetonitrile aqueous solution containing 5 mmol/L ammonium formate and 0.1% formic acid as mobile phase A and 10% acetonitrile aqueous solution containing 5 mmol/L ammonium formate and 0.1% formic acid as mobile phase B. Determination was performed using an electrospray ion source (ESI) in the positive ion mode. The quantitative analysis was carried out by standard addition method. The chromatographic retention performance of different chromatographic columns and the influence of different mobile phases on the separation of the organic amine compounds were compared, and the method was validated. The results showed that the linear ranges of the nine organic amine compounds were 0.04-25000 ng/mL with the linear correlation coefficients (R2) greater than 0.9910. The limits of detection (LODs) of the method were in the range of 0.0004-0.0080 ng/mL, and the limits of quantification (LOQs) of the method were in the range of 0.0035-0.0400 ng/mL. The average recoveries of the method ranged from 85.30% to 104.26% with relative standard deviations (RSDs) of 0.04%-7.95% at the spiked levels of 1, 1.5 and 3 times sample concentration. The established method was applied to detect the absorption waste liquid of a cement plant, and nine organic amine compounds could be effectively detected. The stability of the actual sample was tested, and the RSDs were 0.10%-6.35% in 48 h at 4 ℃. The method is sensitive, rapid and accurate for the determination of the nine organic amine compounds in industrial waste water. It can provide reference for the detection of organic amine compounds, and provide strong technical support for the research and industrial application of CO2 capture technology.

Key words: hydrophilic interaction liquid chromatography (HILIC), electrostatic field orbitrap high resolution mass spectrometry, organic amine compounds, carbon dioxide (CO2) absorbent

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