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首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >Aliphatic and aromatic amines in atmospheric aerosol particles: Comparison of three ionization techniques in liquid chromatography-mass spectrometry and method development
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Aliphatic and aromatic amines in atmospheric aerosol particles: Comparison of three ionization techniques in liquid chromatography-mass spectrometry and method development

机译：大气气溶胶颗粒中的脂肪族和芳香族胺：液相色谱-质谱法中三种电离技术的比较和方法开发

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摘要

A complete methodology was developed for the determination of ten aliphatic and nine aromatic amines in atmospheric aerosol particles. Before the liquid chromatography - tandem mass spectrometric separation and determination, the derivatization reaction of the analytes using dansyl chloride was accelerated by ultrasounds. From three different ionization techniques studied electrospray ionization was superior in terms of sensitivity, linearity, repeatability and reproducibility over atmospheric pressure chemical ionization and photoionization for the target analytes. The method developed was validated for the gas phase, 30 nm and total suspended atmospheric aerosol particles. The method quantification limits ranged between 1.8 and 71.7 pg. The accuracy and the potential matrix effects were evaluated using a standard addition methodology. Recoveries from 92.1% to 109.1%, the repeatability from 0.6% to 8.4% and the reproducibility from 2.3% to 9.8% were obtained. The reliability of the methodology was proved by the statistical evaluation. Finally, the developed methodology was applied to the determination of the target analytes in eight size separated ultrafine particulate (Dp=30±4 nm) samples and in eight total suspended particulate samples collected at the SMEAR II station. The mean concentrations for aliphatic amines were between 0.01 and 42.67 ng m ~(-3) and for aromatic amines between 0.02 and 1.70 ng m ~(-3). Thirteen amines were quantified for the first time in 30 nm aerosol particles.
机译：开发了一种测定大气气溶胶颗粒中十种脂肪族胺和九种芳香族胺的完整方法。在液相色谱-串联质谱分离和测定之前，使用丹磺酰氯对分析物进行衍生化反应是通过超声波进行的。在三种不同的电离技术中，电喷雾电离在灵敏度，线性，重复性和重现性方面均优于大气压化学电离和目标离子的光电离。对开发的方法进行了气相，30 nm和总悬浮大气雾剂颗粒验证。该方法的定量限在1.8至71.7 pg之间。使用标准添加方法评估准确性和潜在的基质效应。获得了从92.1％到109.1％的回收率，从0.6％到8.4％的重复性以及从2.3％到9.8％的重现性。统计评估证明了该方法的可靠性。最后，将开发的方法应用于在SMEAR II站采集的八种大小分离的超细颗粒（Dp = 30±4 nm）样品和八种总悬浮颗粒样品中的目标分析物的测定。脂族胺的平均浓度在0.01至42.67 ng m〜（-3）之间，而芳族胺的平均浓度在0.02至1.70 ng m〜（-3）之间。首次在30 nm气溶胶颗粒中定量了13种胺。

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