An autonomous aerosol sampler/elemental analyzer designed for ocean buoys and remote land sites |
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| Institution: | 1. Department of Life, Health and Environmental Sciences, University of L''Aquila, Via Vetoio, 67010, Coppito, L''Aquila, Italy;1. Pennsylvania State University, Department of Plant Pathology and Environmental Microbiology, University Park, PA, 16802, USA;2. Yale University, Department of Ecology and Evolutionary Biology, New Haven, CT, 06520, USA;3. University of California, Santa Cruz, Environmental Studies Department, Santa Cruz, CA, 95064, USA;1. Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA;2. Department of Pathology, Vancouver General Hospital, Vancouver, BC Canada;3. Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA;4. AstraZeneca, Precision Medicine and Biosamples, New York, NY, USA;5. Advanced Cell Diagnostics, San Jose, CA, USA |
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| Abstract: | An autonomous aerosol sampler/elemental analyzer, that employs energy dispersive X-ray fluorescence spectrometry to determine the elemental (Fe, Si, S, Ca and K) concentrations of aerosols in near real time, has been designed, built and successfully tested on a roof. The ultimate technical goal is to deploy a buoy-mounted aerosol sampler/analyzer in order to make the long-term measurements necessary to quantify the deposition of mineral dust to the oceans. A major scientific goal is to address the question of enhanced biological production due to the release of dissolved iron from the deposition of mineral dust. Design and operating features are discussed and illustrated. This instrument has the sensitivity to measure the concentrations of mineral dust and Fe over the oceans with a time resolution of a few days during periods of moderate to high dust deposition. |
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