Abstract
The success of risk assessment of metal contaminated soils depends on how precisely one can predict the bio-availability of metals in soil and transfer to the human food chain. In the present investigation, we tested several formulations of the ‘free-ion activity model (FIAM)’ to predict uptake of Cd, Zn and Cu by perpetual spinach (Beta vulgaris, Cicla) grown on a range of soils amended with sewage sludge. The model was parameterised using data measured on samples of pore water extracted by centrifugation and with porous Rhizon samplers installed within the rhizosphere of the growing plants. Free ion activities (M2+) were estimated following speciation of solution data using version 6 of the ‘Windermere Humic Aqueous Model (WHAM-VI). For all three metals, the best formulation of the FIAM appeared to require only one hypothetical root sorption site without competition from protons. Values of (M2+) could also be predicted satisfactorily from a pH-dependent Freundlich relation. Thus, from a combined FIAM–Freundlich relation and population dietary information, it was possible to estimate risk (hazard quotients) to consumers from very simple soil measurements: extractable metal content (0.05 M EDTA (Zn and Cu) or 1 M CaCl2 (Cd)), soil humus content and pH. The role of increased soil organic matter content and soil pH, in reducing risk to consumers, is illustrated for Cd in a hypothetical soil at the current UK statutory Cd limit for sludge application to agricultural land.
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References
Alam, M. G. M., Snow, E. T. and Tanaka, A.: 2003, Sci. Total Environ. 308, 83–96.
Baes, C. F., Sharp, R. D., Sjoreen, A. L. and Shor, R. W.: 1984, Review and Analysis of Parameters and Assessing Transport of Environmentally Released Radionuclides Through Agriculture, Oak Ridge National Laboratory, Oak Ridge, TN.
Brown, P. L. and Markich, S. J.: 2000, Aquat. Toxicol. 51, 177–194.
Chaudri, A. M., Knight, B. P., Barbosa-Jefferson, V. L., Preston, S., Paton, G. I., Killham, K., Coad, N., Nicholson, F. A., Chambers, B. J. and McGrath, S. P.: 1999, Environ. Sci. Technol. 33, 1880–1885.
Collins, R. N., Onisko, B. C., McLaughlin, M. J. and Merrington, G.: 2001, Environ. Sci. Technol. 35(12), 2589–2593.
Di Bonito, M., Breward, N., Smith, B. M., Crout, N. M. J. and Young, S. D.: 2002, in Proceedings of 17th World Congress of Soil Science, Bangkok, Thailand, 14–21 August, Symposium No. 24, Paper No. 1499, pp. 1–9.
European Council Directive: 1986, European Community Council Directive of 12 June 1986 on the protection of the environment, and in particular the soil, EEC (OJ L 181, 4.7.1986, pp. 6–12).
Hassan, N. and Ahmed, K.: 2000, Intra Familiar Distribution of Food in Rural Bangladesh, Institute of Nutrition and Food Science, University of Dhaka (Internet: http://www.unu.edu/unpress/food/8F064e/).
Hooda, P. S., McNulty, D., Alloway, B. J. and Aitken, M. N.: 1997, J. Sci. Food Agric. 73, 446–454.
Hough, R. L., Young, S. D. and Crout, N. M. J.: 2003, Soil Use Manage. 19, 19–27.
Hough, R. L., Tye, A. M., Crout, N. M. J., McGrath, S. P. and Young, S. D.: in press, Plant Soil.
IRIS: 2003, Integrated Risk information System-Database, US Environmental Protection Agency.
Jopony, M. and Young, S. D.: 1994, Eur. J. Soil Sci. 45, 59–70.
Jungk, A. and Classen, N.: 1997, Adv. Agron. 61, 53–110.
McGrath, S. P., Knight, B., Killham, K., Preston, S. and Paton, G. I.: 1999, Environ. Toxicol. Chem. 18, 659–663.
McLaughlin, M. J., Zarcinas, B. A., Stevens, D. P. and Cook, N.: 2000, Commun. Soil Sci. Plant Anal. 31, 1661–1700.
Parker, D. R. and Peddler, J. F.: 1997, Plant Soil 196, 223–228.
Pierzynski, G. M., Sims, J. T. and Vance, G. F.: 2000, Soils and Environmental Quality, 2nd edn., CRC Press, Boca Raton, FL.
Quevauviller, P.:1998, Trends Anal. Chem. 17(5), 289–298.
Rattan, R. K., Datta, S. P., Chandra, S. and Saharan, N.: 2002, Fertil. News 47(1), 21–26; 29–40.
Rowell, D. L.: 1994, Soil Science: Methods and Applications, Pearson Education Limited, Essex, England.
Sauerbeck, D. R.: 1991, Water Air Soil Pollut. 57–58, 227–237.
Sauve, S., Dumestre, A., McBride, M. B. and Hendershot, W.: 1998, Environ. Toxicol. Chem. 17, 1481–1489.
Singh, A. K. and Pandeya, S. B.: 1998, Bioresour. Technol. 66(1), 51–58.
Smolders, E. and McLaughlin, M. J.: 1996, Soil Sci. Soc. Am. J. 60, 1443–1447.
Spark, D. L.: 1995, Environmental Soil Chemistry, Academic Press, San Diego, CA, pp. 81–97.
Tipping, E.: 1994, Comput. Geosci. 20(6), 973–1023.
Tipping, E.: 1998, Aquat. Geochem. 4(1), 3–48.
Tye, A. M., Young, S. D., Crout, N. M. J., Zhang, H., Preston, S., Barbosa-Jefferson, V. L., Davison, W., McGrath, S. P., Paton, G. I., Kilham, K. and Resende, L.: 2003, Geochim. Acta 67(3), 375–385.
U.S. EPA: 1991, Office of Solid Waste and Emergency Response, Risk Assessment Guidance for Superfund, Vol. 1: Human Health Evaluation Manual, Supplemental Guidance: Standard Default Exposure Factors, Directive 9285.6-03, Interim Final, March 25, 1991.
Vulkan, R., Zhao, F. J., Barbosa-Jefferson, V., Preston, S., Paton, G. I., Tipping, E. and McGrath, S. P.: 2000, Environ. Sci. Technol. 34, 5115–5121.
WHO: 1982, World Health Organization. Toxicological Evaluation of Certain Food Additives, Joint FAO/ WHO expert committee on food additives. WHO Food Additive Series, No. 683 (Geneva World Health Organizaion).
Young, S. D., Tye, A., Carstensen, A., Lesende, L. and Crout, N.: 2000, Eur. J. Soil Sci. 51(3), 129–136.
Zhang, H., Zhao, F.-J., Sun, B., Davidson, W. and McGrath, S. P.: 2001, Environ. Sci. Technol. 35, 2602–2607.
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Datta, S.P., Young, S.D. Predicting Metal Uptake and Risk to the Human Food Chain from Leaf Vegetables Grown on Soils Amended by Long-Term Application of Sewage Sludge. Water Air Soil Pollut 163, 119–136 (2005). https://doi.org/10.1007/s11270-005-0006-6
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DOI: https://doi.org/10.1007/s11270-005-0006-6