MRI: Acquisition of a GC-MS/MS

有了化学专业研究仪器计划的这一奖项，来自北卡罗来纳州威尔明顿大学的拉尔夫·米德教授和同事帕梅拉·西顿将获得气相色谱三重四极杆质谱仪（GC-MS/MS）。该提案旨在加强各级的研究和教育，特别是在以下领域：（a）对销毁自然沃茨中新出现的污染物所产生的光产品进行定性;（B）检测、识别和了解海洋塑料上污染物的迁移;以及（c）水产养殖鱼类中甘油三酯的结构解析，以优化生长和评估营养质量。色谱-质谱仪蒸发并分离多组分混合物，然后将其传递到质谱仪中，在质谱仪中组分被电离。质谱仪测定这些粒子（母体分子离子和碎片离子）的质荷比。这种高灵敏度的技术可以确定颗粒的质量，它们的化学成分，并使人们能够推断出复杂混合物中物质的结构。串联质谱仪（MS/MS）涉及多个步骤，在阶段之间发生某种形式的碎片化。该奖项提供的仪器将使教师和学生有机会在北卡罗来纳州威尔明顿大学从事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的培训。

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.