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J. Braz. Chem. Soc. vol.23 número1

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Academic year: 2018

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Figure 1. Schematic of the reaction between ammonia and o-phthaldialdehyde in the presence of sulfite.
Figure 3. Ammonia gas generation system: FT, total flow rate; G, pressure  gauge; A1-3, sequential columns for air purification; FC1-5, flowmeters;
Figure 4. Fluorescence spectra of the product of the reaction between  ammonia (34 ppbv), o-phthaldialdehyde and sulfite during three stages:
Table 1. Analytical signal as a function of sampling flow rate. Conc.

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