Elsevier

Marine Pollution Bulletin

Volume 20, Issue 11, November 1989, Pages 556-560
Marine Pollution Bulletin

Report
Evaluation of the sensitivity of sediment stations in pollution monitoring

https://doi.org/10.1016/0025-326X(89)90356-1Get rights and content

Abstract

The value of a sediment monitoring programme may be measured by its capability to reveal changes in the flux of the contaminant in question. The sensitivity of a sediment monitoring station in this respect is a function of the interactions between the change in the net deposition rate of the contaminant, the accumulation rate of the sediment, the thickness and intensity of the mixing zone in the bottom sediment and technical factors such as time between samplings, thickness of analysed samples, and reproduceability of the applied chemical methods. A model for these interactions is presented. It computes the response of the surface sample to changes in contaminant flux over a period of time. It is based on sediment parameters which can be estimated by 210Pb dating of the sediment on the site. The model offers a quantitative evaluation of a sediment monitoring station and may be applied in the planning and interpretation of sediment monitoring programmes. Examples based on the observed range of sediment and chemical parameters are presented.

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