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Using SFA indicators to support environmental policy Texto completo
1999
van der Voet, Ester | van Oers, Lauran | Guinée, J. B. | de Haes, Helias A Udo
In order to improve the link from Substance Flow Analysis (SFA) studies to environmental policy, a translation is made from the SFA overview of flows and stocks into a limited set of indicators. This set is designed to evaluate a region’s substance regime with regard to environmental quality and sustainable development, including problem shifting in time and space.
Mostrar más [+] Menos [-]Photo-Induced OH reactions of naphthalene and its oxidation products on SiO2 Texto completo
1999
Brussol, Claire | Duane, Matthew | Carlier, Patrick | Kotzias, Dimitrios
The photo-induced degradation of naphthalene, 1,4-naphthoquinone, 1-naphthol and 1-NO₂ naphthalene, adsorbed on silica gel, and with the addition of nitrogenous air pollutants e.g. NO₂ (as KNO₂) was investigated. Results indicate that compounds adsorbed onto a solid carrier are degraded when irradiated with UV light (λ > 290 nm) in the presence of nitrites. The key species initiating the naphthalene degradation is the OH-radical which is generated through the photolysis of NO₂. Reaction products identified were 2-formyl-cinnamaldehyde, 1,4-naphthoquinone, nitronaphthol, o-phthaldialdehyde, phthalide and nitronaphthalene. A mass balance between 40–50% was achieved. Under the same irradiation conditions, 1-NO₂ naphthalene is mainly degraded by direct photolysis while degradation of 1-naphthol and 1,4-naphthoquinone proceeds via the reaction with OH-radicals. Identified products were hydroxy-nitro-nitroso- and quinones compounds.
Mostrar más [+] Menos [-]Soils and groundwater pollution and remediation
1999
Huang, P. M. | Iskandar, I. K. (Iskandar Karam)
"Soils and Groundwater Pollution and Remediation explores the toxic levels of metals radionuclides inorganics, and anthropogenic organic compounds found in the soils and groundwater of Asia, Africa, and Oceania. This 14-chapter book reviews the distribution, transformation and dynamics of the pollutants. The authors also reflect on the impact of acid rain."--Jacket.
Mostrar más [+] Menos [-]Aerobic biodegradation of vinyl chloride and CIS-1,2-dichloroethylene: laboratory and field studies
1999
Ludvigsen, L. | Kiilerich, O. | Broholm, K. | Deigaard, L.
[Combined elimination of TCE and chromate in reactive walls: results from trials]
1999
Locht, T. | Klingberg, J. | Kjeldsen, P.
[CEVENT: Center for Ventilation of Soil and Groundwater as in-situ remediation technique]
1999
Andersen, L. | Groen, C. | Hansen, A.B. | Hansen, I.K. | Nygaard, E. | Broholm, K. | Holm, J. | Holm, P.
[Detailed mapping: is our knowledge sufficient?]
1999
Baumann, J. | Foged, N. | Joergensen, P.
[Leachability of pesticides: Analysis of impact of variation on parameters of precipitation and biomass]
1999
Barlebo, H.C. | Lindhardt, B. | Hansen, M.
[ISO-standards: constraints or options?]
1999
Kruse, M.A. | Kirkegaard, C. | Faarbaek, A. | Samsoee-Petersen, L.
[Can natural degradation of pesticides lead to a changed risk assessment?]
1999
Lund, E.D. | Aktor, H.
