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dc.contributor.authorRamos, Brigitteen_US
dc.contributor.authorMiller, Shelleyen_US
dc.contributor.authorKorfmacher, Karlen_US
dc.date.accessioned2006-08-18T21:21:48Zen_US
dc.date.available2006-08-18T21:21:48Zen_US
dc.date.issued2003-01en_US
dc.identifier.citationJournal of Chemical Education 80N1 (2003) 50-53en_US
dc.identifier.issn0021-9584en_US
dc.identifier.urihttp://hdl.handle.net/1850/2355en_US
dc.description.abstractThe rate of nonlinear sediment deposition in a local pond was determined through the application of Geographic Information System (GIS) software to an established laboratory method. Determination of total sediment deposition is difficult to solve using a single method as a result of the high degree of spatial variability. The spatial analysis tools available in the software, such as interpolation and overlay operations, provides a mechanism to interpolate sediment accumulation at distinct sampling points. The depth of sediment accumulated at individual sample locations was related to the lead content as determined by atomic absorption spectrometry (AAS). As a result of the discontinuation of leaded gasoline in 1970, a decline in lead emissions has occurred, with a corresponding peak in lead concentrations evident in collected sediments. This makes lead a useful tracer to determine sediment deposition since 1970. ArcView 3.2 was employed to integrate sample site locations obtained from the Global Positioning System (GPS), features digitized from aerial photographs, tabular values of lead concentrations from the AAS analysis, and depth data collected by sounding sample sites. After integrating this information the software could then generate graphic representations of sediment deposition throughout a local pond over a thirty-year timeframe. The data obtained suggest sediment accumulation between 10 and 75 cm at different sites throughout the study area and an estimated total accumulation of over 1900 m3 of sediment since 1970.en_US
dc.format.extent31371 bytesen_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.publisherThe American Chemical Society: Journal of Chemical Educationen_US
dc.titleImplementation of a geographic information system in the chemistry curriculum: an exercise in integrating environmental analysis and assessmenten_US
dc.typeArticleen_US
dc.subject.keywordAtomic spectroscopyen_US
dc.subject.keywordChemistry educationen_US
dc.subject.keywordEnvironmental chemistryen_US
dc.subject.keywordGISen_US
dc.identifier.urlhttp://dx.doi.org/10.1021/ed080p50


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