| A NEW RECEPTOR MODEL:A DIRECT TRILINEAR DECOMPOSITION FOLLOWED BY A MATRIX RECONSTRUCTION |
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| 作者姓名： | PHILIP K.HOPKE |
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| 作者单位： | Department of |
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| 摘 要： | In many cases,monitoring data for ambient airborne particles can be organized in the form of a three-way data table with one way for chemical species,one for sampling periods and one for sites.A directtrilinear decomposition followed by a matrix reconstruction(DTDMR)is developed to analyze such adata table as a whole.The three-way data set is composed into three two-way matrices by a direct trilineardecomposition(DTD).The column vectors of each of the matrices are called‘source profiles’,‘emissionpatterns’and‘site coefficients’respectively.Particulate sources are identified by examining both theirsource profiles and emission patterns.After the sources have been identified,emission patterns and sitecoefficients are used to produce a three-way matrix that gives estimates of mass contributions of sourcesto the samples collected at every site in every period.By simulation study,not only has the method beenverified,but a good indicator has been found that shows the number of factors(i.e.sources)in thesystem.Unlike other receptor models,DTDMR does not require source profile data and does not involvetrial-and-error procedures.Since DTDMR identifies sources based on variations in two dimensions,it hasa higher potential to distinguish two sources that have similar chemical compositions.The DTDMRmodel has provided excellent results with simulated data and has been applied in a real world three-waydata set.
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A NEW RECEPTOR MODEL:A DIRECT TRILINEAR DECOMPOSITION FOLLOWED BY A MATRIX RECONSTRUCTION |
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| PHILIP K.HOPKE.A NEW RECEPTOR MODEL:A DIRECT TRILINEAR DECOMPOSITION FOLLOWED BY A MATRIX RECONSTRUCTION[J].Journal of Geographical Sciences,1992(2). |
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| Authors: | YOUSHENG ZENG PHILIP KHOPKE |
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| Institution: | YOUSHENG ZENG~ PHILIP K.HOPKE~ Department of Chemistry,Clarkson University,Potsdam,NY,U.S.A. National Environment Technologies,Inc.,-E Southern Pine Blv,Charlotte,NC,U.S.A. |
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| Abstract: | |
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| Keywords: | Trilinear decomposition Receptor modeling Source identification |
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