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Figure 1A illustrates a typical separation obtained from the chromatographic analysis of a mixture of 4NPP and 4NP by monitoring the column eluent at 311 nm.

By the comparison of analyses of duplicate samples containing 4NPP and 4NP,a fivefold increase in sensitivity for 4NP is observed at 404nm over that obtained at 311nm.

[ Last edited by zjloveru on 2009-4-10 at 14:22 ]
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