A study of the priority substances of the Water Framework Directive ...

APPENDIX A
Detection limits and measurement uncertainty
Detection limits and measurement uncertainty
for all substances in the different relevant sample
matrices are given in the table below. The
lower limit of detection is determined by several
factors. The most important are sample amount,
clean-up method and instrument sensitivity.
These factors can vary between the different
laboratories, matrix types, and even between
different samples of the same type. The detection
limits given in the table below are therefore
a rough estimate. The measurement uncertainty
of a method is determined by the used method,
SUBSTANCE
WFD SUBSTANCES:
appendix a ::::::::::..
the experience of the laboratory executing the
method, the availability and results of intercalibrations
and certified reference materials. Since
there are several different methods for quantifying
measurement uncertainties, the uncertainty
is given as rough categories only: good: well
established method with a high frequency of
intercalibrations and relevant certified materials
available; fair: established method only infrequent
intercalibrations, no major analytical
problems; poor: new method not all analytical
problems solved.
Detection limit
Water ng/L Sediment g/kg d.w. Biota g/kg f.w.
Alachlor 2-200 1-10 1-10 fair
Atrazine 1-200 1-10 1-10 fair
Benzene 20-200 10-100 10-100 fair
Brominated diphenylethers 0,1-50 0,1-50 0,2-100 fair
Cadmium and its compounds 2-10000 30-10000 2-1000 good
C10-13-chloroalkanes (Sum) 1-500 0,3-50 0,3-50 poor
Chlorfenvinphos 4-200 1-10 1-10 fair
Chlorpyrifos 4-200 1-10 1-10 fair
1,2-Dichloroethane 20-200 10-100 10-100 fair
Dichloromethane 20-200 10-100 10-100 fair
Di(2-ethylhexyl)phthalate 50 20 40 poor
Diuron 1-20 1-20 1-20 fair
Endosulfan 0,05-10 0,05-10 0,05-10 good
Hexachlorobenzene 0,05-10 0,05-10 0,05-10 good
Hexachlorobutadiene 20-200 10-100 10-100 fair
Hexachlorocyclohexane 0,05-10 0,05-10 0,05-10 good
Isoproturon 1-20 1-20 1-20 fair
Lead and its compounds 10-10000 85-10000 9-10000 good
Mercury and its compounds 2-200 5-200 5-200 good
Nickel and its compounds 50-10000 40-10000 40-10000 good
Nonylphenols 10-20 10-50 10-50 fair
Octylphenols 1-20 1-50 1-50 fair
Pentachlorobenzene 0,05-10 0,05-10 0,05-10 good
Pentachlorophenol 1-20 1-50 1-50 fair
Polycyclic aromatic hydrocarbons 0,1-300 0,3-100 0,1-100 good
Anthracene 0,1-300 0,3-100 0,1-100 good
Benzo(a)pyrene 0,1-300 0,3-100 0,1-100 good
Benzo(b)fluoranthene 0,1-300 0,3-100 0,1-100 good
(continued on page 98)
Uncertainty
A study of the priority substances of the Water Framework Directive
TA-2140/2005
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