Combined effects of air and soil pollution by fluoride emissions on Tibouchina pulchra Cogn., at Cubatão, SE Brazil, and their relations with aluminium
Tóm tắt
High deposition of gaseous/particulate fluorides and other air pollutants has resulted in an acidification and probable formation of soluble AlFx complexes in the soil in the vicinity of the industrial complex of Cubatão, SE Brazil. With the present field study we aimed at determining the contribution of F and Al uptake from fluoride-contaminated soil, supposedly as AlFx complexes, to the increase of foliar F and Al contents in saplings of an Al-accumulator tree species (Tibouchina pulchra) which were concomitantly exposed to fluoride-contaminated air and also the proportional contribution of both air and soil contamination to the mentioned foliar accumulation of these elements. The seasonal variations in F and Al accumulation and possible metabolic changes in the plants due to F and Al accumulation were also investigated. The saplings were exposed during three consecutive periods of 16 weeks to: (a) air and soil from a reference site (PVnoF); (b) air or soil from two polluted sites (CM-high air pollution, low F and MV-high air pollution, high F); and (c) both air and soil from these polluted sites. After exposure, the changes in the foliar concentrations of F and Al, the relations between both element contents and their relationships with oxidative stress indicators were determined. The data were grouped in three matrices: PVnoF–CMlwF and PVnoF–MVhgF, taking in account the possible air/soil exposure combinations in each, and soil/air from all sites. The slight F accumulation in plants of PVnoF–CMlwF matrix was a result of higher uptake from soil than from air (54 and 46%, respectively). At PVnoF–MVhgF matrix, the extremely high F accumulation in leaves of T. pulchra could be attributed to the combination of both air and soil contamination (83 and 17%, respectively). T. pulchra always showed higher foliar Al concentrations than 1000 μg g−1 dry mass, mainly after exposure to air and soil of both polluted sites (CMlwF and MVhgF). A highly significant linear regression was estimated between molar Al and F contents, taking in account the data obtained for saplings of T. pulchra cultivated in the different soils and exposed to ambient air of PVnoF, suggesting that both elements were taken as Al–F complexes from soil. The uptake of fluorides from air and/or soil of MVhgF caused significant metabolic changes in T. pulchra, but visible injury supposedly induced by fluorides were observed only when the foliar F contents surpassed 700 μg g−1 dry mass. On the contrary, Al did not cause any metabolic stress to the plants.
Tài liệu tham khảo
Alonso C D and Godinho R 1992 A evolução da qualidade do ar em Cubatão. Química Nova 15, 126-136.
Andrews S M, Cooke JA and Johnson M S 1989 Distribution of trace element pollutants in a contaminated ecosystem established on metalliferous fluorspar taillings. 3: fluoride. Environ. Pollut. 60, 165-179.
AOAC-Association of Official Analytical Chemists 1975 Fluoride. Potentiometric method-official first action. J. AOAC 58, 384-385.
Arnesen A K M 1997 Availability of fluoride to plants grown in contaminated soils. Plant Soil 191, 13-25.
Arnesen A K M 1998 Effects of fluoride pollution on pH and solubility of Al, Fe, Ca, Mg, K and organic matter in soil from Ardal (Western Norway). Water Air Soil Pollut. 103: 375-388.
Arnesen A K M and Krogstad T 1998 Sorption and desorption of fluoride in soil polluted from the aluminium smelter at Ardal in Western Norway. Water Air Soil Pollut. 103, 357-373.
Buchanan B B, Gruissem W and Jones R L 2000 Biochemistry and Molecular Biology of Plants. American Society of Plant Physiology, USA. 1367 pp.
Chenery EMand Sporne K R 1976 A note on the evolutionary status of aluminium-accumulators among dicotyledons. New Phytol. 76, 551-554.
Cronin S J, Manoharan V, Hedley M J and Loganathan P 2000 Fluoride: a review of its fate, bioavailability, and risks of fluorosis in grazed-pasture systems in New Zealand. N.Z. J. Agric. Res. 43, 295-321.
Domingos M, Klumpp A and Klumpp G 1998 Air pollution impact on the Atlantic Forest at the Cubatão region, SP, Brazil. Ciência e Cultura. J. Braz. Assoc. Adv. Sci. 50, 230-236.
Gutberlet J 1996 Cubatão: desenvolvimento, exclusão social e degradação ambiental. Editora Universidade de São Paulo, São Paulo, Brazil. 244 pp.
Haidouti C, Chronopoulou A and Chronopoulos J 1993 Effects of fluoride emissions from industry on the fluoride concentration of soils and vegetation. Biochem. Syst. Ecol. 21, 195-208.
Jaeschke W (resp.) 1997 Chemistry Module. In Air Pollution and Vegetation Damage in the Tropics-the Serra do Mar as an Example-Final Report 1990-1996. Eds. D Klockow, H T Targa and W Vautz. pp. III.1-III.77. German/Brazilian Cooperation in Environmental Research and Technology, SHIFT (Studies on Human Impact on Forests and Floodplains in the Tropics) Programme. GKSS-Forschungszentrum Geesthacht GmbH, Geesthacht.
Keller T 1974 The use of peroxidase activity for monitoring and mapping air pollution areas. Eur. J. For. Pathol. 4, 11-19.
Kinraide T B 1997 Reconsidering the rhizotoxicity of hydroxyl, sulphate, and fluoride complexes of aluminium. J. Exp. Bot. 48, 1115-1124.
Klumpp A, Domingos M and Klumpp G 1996a Assessment of the vegetation risk by fluoride emissions from fertiliser industries at Cubatão, Brazil. Sci. Total Environ. 192, 219-228.
Klumpp A, Klumpp G, Domingos M and Silva M D 1996b Fluoride impact on native tree species of the Atlantic Forest near Cubatão, Brazil. Water Air Soil Pollut. 87, 57-71.
Klumpp A, Domingos M, Klumpp G and Guderian R (resp.) 1997 Vegetation module. In Air Pollution and Vegetation Damage in the Tropics-the Serra do Mar as an Example-Final Report 1990-1996. Eds. D Klockow, H T Targa and W Vautz. pp. V.1-V47. German/Brazilian Cooperation in Environmental Research and Technology, SHIFT (Studies on Human Impact on Forests and Floodplains in the Tropics) Programme. GKSS-Forschungszentrum Geesthacht GmbH, Geesthacht.
Klumpp G, Furlan C M, Domingos M and Klumpp A 2000 Response of stress indicators and growth parameters of Tibouchina pulchra Cogn. exposed to air and soil pollution near the industrial complex of Cubatão, Brazil. Sci. Total Environ. 246, 79-91.
Lopes M I M S 2001 Fluxo de água, balanço químico e alterações no solo da Floresta Atlântica atingida pela poluição aérea de Cubatão, SP, Brasil. Doctorate thesis, Universidade de São Paulo, São Paulo, Brazil.
MacLean D C, Hansen K S and Schneider R E 1992 Amelioration of aluminium toxicity in wheat by fluoride. New Phytol. 121, 81-88.
Mayer R, Liess S, Lopes M I M S and Kreutzer K 2000a Atmospheric pollution in a tropical rain forest: effects of deposition upon biosphere and hydrosphere. I. Concentrations of chemicals. Water Air Soil Pollut. 121, 59-78.
Mayer R, Liess S, Lopes M I M S and Kreutzer K 2000b Atmospheric pollution in a tropical rain forest: effects of deposition upon biosphere and hydrosphere. II. Fluxes of chemicals and element budgets. Water Air Soil Pollut. 121, 79-92.
Miller G W 1993 The effect of fluoride on higher plants. Fluoride 26, 3-22.
Pompéia, S.L. 1997. Sucessão secundária da Mata Atlântica em áreas afetadas pela poluição atmosférica Cubatão, SP. Doctorate thesis, Universidade de São Paulo, São Paulo, Brazil.
Stevens D P, McLaughlin M J and Alston A M 1997 Phytotoxicity of aluminium-fluoride complexes and their uptake from solution culture by Avena sativa and Lycopersicon esculentum. Plant Soil 192, 81-93.
Takmaz-Nisancioglu S and Davison AW1988 Effects of aluminium on fluoride uptake by plants. New Phytol. 109, 149-155.
Vike E 1999 Air-pollutant dispersal patterns and vegetation damage in the vicinity of three aluminium smelters in Norway. Sci. Total Environ. 236, 75-90.
Vike E and Habjorg A 1995 Variation in fluoride content and leaf injury on plants associated with three aluminium smelters in Norway. Sci. Total Environ. 163, 25-34.
Weinstein LH 1977 Fluoride and plant life. J. Occup. Med. 19, 49-78.
Woolhouse H W 1983 Toxicity and tolerance in the responses of plants to metals. In Physiological Plant Ecology III-Responses to the Chemical and Biological Environment. Eds. O L Lange, P S Nobel, C B Osmond and H Ziegler. pp. 245-300. Springer Verlag, New York.
Xie Z M, Ye Z H and Wong M H 2001 Distribution characteristics of fluoride and aluminum in soil profiles of an abandoned tea plantation and their uptake by six woody species. Environ. Int. 26, 341-346.
Zagatto E A G, Jacintho A O, Reis B F, Krug F J, Bergamin Filho H, Pessenda L C R, Moratti J and Gine M F 1981 Manual de análise de plantas e águas empregando sistemas de injeção em fluxo. CENA/Universidade de São Paulo, Piracicaba, Brazil. 56 pp.