Compositional Heterogeneity Within Oceanic Suspended Particulate Organic Matter

9503455埃林顿海洋环境中颗粒有机物的分子特征在技术上一直是不可行的，直到最近。这项研究中的研究人员将利用直接温度分辨质谱仪(DT-MS)领域的最新发展来研究从近海采集的悬浮POM的组成细节，包括使用流式细胞仪将悬浮POM分离成不同的亚类(根据颗粒大小定义)，然后对类分离进行DT-MS分析。该方法将使确定不同类别有机化合物(多糖、蛋白质、酚类等)的组成和相对重要性成为可能。以及建立POM浮游生物来源的化学特征。

9503455 Eglinton The molecular-level characterization of particulate organic matter (POM) in the marine environment has remained technically unfeasible until recently. The investigator in this study will be taking advantage of recent developments in the field of direct temperature resolved mass spectrometry (DT-MS) to study compositional details of suspended POM collected from inshore will involve the use of flow cytometry to separate suspended POM into sub-classes defined on the particle size) followed by DT-MS analysis of the class separates. The approach will make possible the determination of the composition and relative importance of different classes of organic compounds (polysaccharides, proteins, phenols, etc.) as well as establish chemical signatures for the planktonic sources of the POM.