Fluorescence as a Tool for Tracing the Organic Contamination from Pulp Mill Effluents in Surface Waters
Fluorescence as a Tool for Tracing the Organic Contamination from Pulp Mill Effluents in Surface...
Santos, Eduarda B. H.; Filipe, Olga M. S.; Duarte, Regina M. B. O.; Pinto, Helena; Duarte, Armando C.
2001-07-01 00:00:00
Three‐dimensional fluorescence spectra of water samples from an eucalyptus bleached kraft pulp mill and from a river, upstream and downstream of the discharge of the effluent, revealed the existence of a peak at δexc = 280 nm and δem = 340 nm Δδ = 60 nm), characteristic of effluentπs organic matter. Humic substances were isolated from the effluent by sequential adsorption onto resins XAD‐8 and XAD‐4 in series. Their synchronous fluorescence spectra with Δδ = 60 nm do also exhibit an intense signal at δexc = 280 nm (≈ 300 nm in the humic acid fraction). The peak is absent in the spectra of humic substances isolated from a non‐polluted site of the river, but it is clearly seen in the spectra of the humic substances from a site downstream of the discharge of the effluent. Synchronous fluorescence spectra (Δδ = 60 nm) of water samples from the river and its lagoon were recorded and revealed to be an easy and fast way of tracing the organic contamination from the effluent.
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngActa hydrochimica et hydrobiologicaWileyhttp://www.deepdyve.com/lp/wiley/fluorescence-as-a-tool-for-tracing-the-organic-contamination-from-pulp-BxRD9Rw00r
Fluorescence as a Tool for Tracing the Organic Contamination from Pulp Mill Effluents in Surface Waters
Three‐dimensional fluorescence spectra of water samples from an eucalyptus bleached kraft pulp mill and from a river, upstream and downstream of the discharge of the effluent, revealed the existence of a peak at δexc = 280 nm and δem = 340 nm Δδ = 60 nm), characteristic of effluentπs organic matter. Humic substances were isolated from the effluent by sequential adsorption onto resins XAD‐8 and XAD‐4 in series. Their synchronous fluorescence spectra with Δδ = 60 nm do also exhibit an intense signal at δexc = 280 nm (≈ 300 nm in the humic acid fraction). The peak is absent in the spectra of humic substances isolated from a non‐polluted site of the river, but it is clearly seen in the spectra of the humic substances from a site downstream of the discharge of the effluent. Synchronous fluorescence spectra (Δδ = 60 nm) of water samples from the river and its lagoon were recorded and revealed to be an easy and fast way of tracing the organic contamination from the effluent.
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