MRI: Acquisition of a spectrofluorometer for chemistry research and teaching

查普曼大学的Warren De Bruyn教授和她的同事Catherine Clark将获得化学专业研究仪器计划颁发的这一奖项，他们将获得一台台式荧光仪，该仪器带有内置的UV-Vis分光光度计，可以同时进行荧光和吸光度测量。该建议旨在加强各层面的研究和教育，特别是在沼泽、沿海和海洋水域中与有色溶解有机物(CDOM)有关的光化学驱动过程和碳循环的速率和机制研究，例如，盐沼地表水和孔隙水中CDOM的加工和光学性质，沿海水域过氧化氢的光化学产生和对微生物水质的影响，丙酮等挥发性有机碳气体的产生和分解，以及城市径流中多环芳烃的光解。一般来说，荧光是一种发光形式，其中光是由吸收了光或其他电磁辐射的物质发出的。通常情况下，发射的光具有更长的波长，因此比吸收的辐射能量更少。这一现象在化学传感器、荧光标记、染料和生物检测器等领域有着广泛的应用前景。该仪器将用于研究，也将用于教育活动。

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.