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Chemometric techniques were applied to follow the transport of potassium through a chloroform membrane, using ternary mixtures of the isomeric anions, 2,4-dinitrophenolate (2,4-DNP) and 2,5-dinitrophenolate (2,5-DNP) with also 2-nitrophenolate (ortho-). Some spectral differences can be observed in the UV–Vis region, although 2,4- and 2,5-DNP have very similar spectra. Using the trilinear decomposition...
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