MRI: Acquisition of a GC-MS/MS

北卡罗莱纳大学威尔明顿分校的Ralph Mead教授和他的同事Pamela Seaton将获得一台气相色谱仪三重四极杆质谱仪（GC-MS/MS）。该建议旨在加强各级的研究和教育，特别是在以下领域：(a)对农村自然水域中新出现的污染物的破坏所产生的光产物的特征；(b)检测、识别和了解污染物在海洋塑料上的迁移；(c)对养殖鱼中甘油三酯的结构解析，以优化生长和评估营养品质。气相色谱仪-质谱仪蒸发并分离多组分混合物，然后将混合物进入质谱仪，在质谱仪中各组分被电离。质谱仪测定这些粒子（母体分子离子和碎片离子）的质量/电荷比。这种高度灵敏的技术可以测定粒子的质量，它们的化学成分，并可以推断出复杂混合物中物质的结构。串联质谱计（MS/MS）涉及多个步骤，在各阶段之间会发生某种形式的分裂。该奖项提供的仪器将使教师和学生有机会在北卡罗来纳大学威尔明顿分校从事具有环境重要性的研究项目。它将促进许多学生在使用这一重要和广泛使用的分析技术方面的训练。

With this award from the Chemistry Major Research Instrumentation Program, Professor Ralph Mead from the University of North Carolina Wilmington and colleague Pamela Seaton will acquire a gas chromatograph triple quadrupole mass spectrometer (GC-MS/MS). The proposal is aimed at enhancing research and education at all levels, especially in areas such as (a) characterization of photoproducts generated from the destruction of emerging contaminates in natrural waters; (b) detection, identification and understanding of the transport of pollutants on marine plastics; and (c) structural elucidation of tructural elucidation of triglycerides in aquaculture raised fish to optimize growth and assess nutritional quality.A gas chromatograph-mass spectrometer vaporizes and separates a multi component mixture which then passes into the mass spectrometer where the components are ionized. The mass spectrometer determines the mass/charge ratio of these particles (parent molecular ion and fragment ions). This highly sensitive technique allows determination of the masses of the particles, their chemical composition and enables one to deduce the structure of the substances in a complex mixture. The tandem mass spectrometer (MS/MS) involves multiple steps with some form of fragmentation occurring between stages. The instrumentation provided by this award will allow faculty and students the opportunity to pursue research projects of environmental importance at the University of North Carolina Wilmington. It will advance the training of many students in the use of this important and widely used analytical technique.