MRI: Acquisition of a spectrofluorometer for chemistry research and teaching

通过化学主要研究仪器项目的奖励，查普曼大学的Warren De Bruyn教授和他的同事Catherine Clark将获得一台带有内置紫外-可见分光光度计的台式荧光光谱仪，该分光光度计可以同时测量荧光和吸光度。该建议的目的是加强各级的研究和教育，特别是在诸如研究与沼泽、沿海和海水中的显色性溶解有机物（CDOM）有关的光化学驱动过程和碳循环的速率和机制等领域，例如，盐沼表面和孔隙水中CDOM的加工和光学性质、沿海水域过氧化氢的光化学生产和对微生物水质的影响；城市径流中挥发性有机碳气体如丙酮的产生和分解以及多芳烃的光解作用。荧光分光计允许荧光参数。一般来说，荧光是一种发光形式，其中光是由吸收光或其他电磁辐射的物质发出的。通常，发射的光具有较长的波长，因此比吸收的辐射能量更少。这种现象在化学传感器、荧光标记、染料和生物探测器中有许多有用的应用。这个仪器将用于研究和教育活动。

With this award from the Chemistry Major Research Instrumentation Program, Professor Warren De Bruyn from Chapman University and colleague Catherine Clark will acquire a benchtop spectrofluorometer with a built-in UV-VIS spectrophotometer which makes simultaneous fluorescence and absorbance measurements. The proposal is aimed at enhancing research and education at all levels, especially in areas such as studies of rates and mechanisms of photochemically driven processes and carbon cycling related to chromophoric dissolved organic matter (CDOM) in marsh, coastal and marine waters, e.g., processing and optical properties of CDOM in surface and pore waters in salt marshes, photochemical production of hydrogen peroxide in coastal waters and impacts on microbial water quality, production and decomposition of volatile organic carbon gases like acetone and photolysis of polyaromatic hydrocarbons in urban runoff.A spectrofluorometer allows fluorescence parameters. In general, fluorescence is a form of luminescence in which light is emitted by a substance that has absorbed light or other electromagnetic radiation. Often the light that is emitted has a longer wavelength and thus less energy than the absorbed radiation. This phenomenon has many useful applications in chemical sensors, fluorescence labeling, dyes and biological detectors. This instrument will be used for research and also in educational activities.