Concentration of biochemical oxygen demand in rivers in EU and accession countries

Figure Created 12 Nov 2009 Published 12 Nov 2009 Last modified 29 Nov 2012
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Number of stations in brackets


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EU countries: Denmark, France, UK Accession countries: Bulgaria, Hungary, Slovak Republic, SIovenia. Background concentrations of biochemical oxygen demand are difficult to quantify and are likely to be at or below the detection limit of the analytical method of measurement, that is, between 1 and 2 mg O2/l.

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