Seasonal Variations of Ten Metals in Highway Runof

Authors: Magnus Hallberg Gunno Renman Torbjörn Lundbom

Publish Date: 2006/12/13

Volume: 181, Issue: 1-4, Pages: 183-191

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Abstract

Knowledge of differentiation of pollutants in urban runoff between dissolved and particulate matter is of great concern for a successful design of a water treatment process Seasonal variations in pollutant load are of equal importance Ten metals Al Cd Co Cr Cu Fe Mn Ni Pb and Zn as dissolved and particulate bound was studied in the runoff from a major urban highway during a winter season and its following summer Studded tyres and winter salting were expected to have an impact on the runoff water quality The dissolved part of Al Cd Co Cr Mn and Ni was significantly higher in winter in comparison with summer p  001 For Fe however the dissolved part was lower during winter No significant difference was found for Cu Pb and Zn between the two seasons The mass concentration mg kg−1 for all metals was significantly higher over the summer except for Al and Co which showed a higher mass concentration during the winter The concentration of selected metals vs total suspended solids TSS showed a linear relationship r 2  095 during winter runoff events except for Cd A good correlation r 2  090 was also found for the summer period for Al Cu Fe Mn Ni and Zn It is suggested that the metal pollutant load during winter could be assessed indirectly by measurement of TSSFinancial support was given by the Skanska PhD Program the Office of Regional Planning and Urban Transportation in Stockholm the Swedish Road Administration and the Division for Maintenance and Support in the Stockholm Region the Road Bridge and Tunnel Consortium and finally the Swedish construction industry’s organisation for research and development the SBUF

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