Fitzsimons Mark F, Tilley Mia, Cree Charlotte H L
Biogeochemistry Research Centre, School of Geography, Earth and Environmental Sciences, University of Plymouth, PL4 8AA, UK.
Biogeochemistry Research Centre, School of Geography, Earth and Environmental Sciences, University of Plymouth, PL4 8AA, UK.
Anal Chim Acta. 2023 Feb 8;1241:340707. doi: 10.1016/j.aca.2022.340707. Epub 2022 Dec 8.
This review provides a critical assessment of knowledge regarding the determination of volatile, low molecular weight amines, and particularly methylamines, in marine aquatic; systems. It provides context for the motivation to determine methylamines in the marine aquatic environment and the analytical challenges associated with their measurement.While sensitive analytical methods have been reported in recent decades, they have not been adopted by the oceanographic community to investigate methylamines' biogeochemistry and advance understanding of these analytes to the degree achieved for other marine volatiles. Gas chromatography, high performance liquid chromatography, ion chromatography and infusion-mass spectrometry techniques are discussed and critically determined, alongside offline and online preconcentration steps. Interest in the marine occurrence and cycling of methylamines has increased within the last 10-15 years, due to their potential role in climate regulation. As such, the need for robust, reproducible methods to elucidate biogeochemical cycles for nitrogen and populate marine models is apparent. Recommendations are made as to what equipment would be most suitable for future research in this area.
本综述对海洋水生系统中挥发性低分子量胺类尤其是甲胺类的测定相关知识进行了批判性评估。它为在海洋水生环境中测定甲胺类的动机以及与它们测量相关的分析挑战提供了背景信息。虽然近几十年来已报道了灵敏的分析方法，但海洋学界尚未采用这些方法来研究甲胺类的生物地球化学，也未将对这些分析物的理解推进到对其他海洋挥发性物质所达到的程度。本文讨论并批判性地评估了气相色谱法、高效液相色谱法、离子色谱法和注入质谱技术，以及离线和在线预浓缩步骤。在过去10至15年里，由于甲胺类在气候调节中的潜在作用，人们对其在海洋中的存在和循环的兴趣有所增加。因此，显然需要可靠、可重复的方法来阐明氮的生物地球化学循环并充实海洋模型。文中针对该领域未来研究最适合使用何种设备给出了建议。
