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2. European Commission, WFD-CIS Guidance Document No. 19 Guidance on Surface Water Chemical Monitoring under The WFD, Office for Official Publications of the European Communities, Luxembourg, 2009, p. 130.
3. Pollutant partitioning for monitoring surface waters
4. AMPS Expert Group, EU Report Contributions of the Expert Group on Analysis and Monitoring of Priority Substances to the WFD Expert Advisory Forum on Priority Substances and Pollution Control, EUR 21587 EN, European, Communities, 2005, p. 133.
5. European Commission. WFD-CIS Guidance Document No. 25 Guidance on chemical monitoring of sediment and biota under the WFD, Office for Official Publications of the European Communities, Luxembourg, 2010, p. 74.