Water, Air, and Soil Pollution

, Volume 64, Issue 3–4, pp 467–474 | Cite as

The retention of trace elements on funnel surfaces of sampling equipment for wet deposition

  • J. L. M. de Boer
  • F. Fortezza


The retention behaviour of heavy metals from wet deposition on funnel surfaces of wet-only collectors was studied. Two groups of elements were distinguished: (i) elements for which the amount retained was proportional to the concentration in the deposition sample, independent of the exposure time: Cd, Cu and most probably also Ni and V; and (ii) elements for which the amount retained increased with exposure time; Fe and Pb. Percentage retention after an exposure time of 14 d ranged from 5 to 13% for group (i) elements to 7 to 18% for group (ii) elements. The difference in behaviour of the elements of group (i) and (ii) might be attributed to the way these metals are present in precipitation samples. Cadmium and Cu are largely dissolved and show corresponding equilibrium behaviour, while Fe and Pb are to a certain extent present in particles in rainwater, which particles accumulate on the funnel surface. The retention of As, Co, Cr and Mn could not be established because their concentrations were below the detection limits.


Precipitation Heavy Metal Cadmium Detection Limit Exposure Time 
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Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • J. L. M. de Boer
    • 1
  • F. Fortezza
    • 1
  1. 1.National Institute of Public Health and Environmental ProtectionBA BilthovenThe Netherlands

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