Mogensen, B; Bossi, R; Kjær, J; Juhler, R; Boutrup, S. (2007). Danmarks Miljøundersøgelser ved Aarhus Universitet. Technical report from NERI no. 638. 35 pp
Summary
This screening project is part of the national surveillance
programme for the aquatic environment and nature (NOVANA).
Screening of xenobiotic compounds in the environment is a
way to include new compounds in the monitoring programme and it includes
emerging compounds in selected matrices at a limited number of locations. The
objective of the screening is to establish a basis for evaluation of the
relevance of including these new compounds in the national monitoring. As the
screening includes a limited number of sampling sites for each matrix, it is not
possible to draw final conclusions on the occurrence of the compounds in the
environment.
This
screening project included thirty pharmaceuticals for human as well as
veterinary use, one metabolite and one biocide (triclosan) and its metabolite
(methyl triclosan). The pharmaceuticals were selected among those most
frequently used in Denmark .
<p class="DScreening of xenobiotic compounds in the environment is a
way to include new compounds in the monitoring programme and it includes
emerging compounds in selected matrices at a limited number of locations. The
objective of the screening is to establish a basis for evaluation of the
relevance of including these new compounds in the national monitoring. As the
screening includes a limited number of sampling sites for each matrix, it is not
possible to draw final conclusions on the occurrence of the compounds in the
environment.
<p class =" for selected DThis screening project included thirty in human well as veterinary use, one biocide (triclosan) and its metabolite (methyl triclosan). The pharmaceuticals were SPAN among those most frequently used ID='ektct5035' ctagtype="1" ctagattrs=" w:st=@zzquote;on@zzquote;" ctagnomen="st1:country-region" unselectable="off" <>
<p class =" for selected DThis screening project included thirty in human well as veterinary use, one biocide (triclosan) and its metabolite (methyl triclosan). The pharmaceuticals were SPAN among those most frequently used ID='ektct5035' ctagtype="1" ctagattrs=" w:st=@zzquote;on@zzquote;" ctagnomen="st1:country-region" unselectable="off" <>Samples were collected of influent and effluent water as
well as sludge at sewage treatment plants (STPs) of surface water from streams
with catchment areas including pig farming or fish farming and of drainage water
and ground water. All together 64 samples were analysed.
In
influent water, 15 of 31 analysed pharmaceuticals were detected and 13 of these
were also detected in effluent water. The degree of removal in the STPs varied
from compound to compound and from plant to plant. For eight of the compounds
PNEC (predicted no effect concentration) values have been established. For seven
of these compounds, the maximum concentration in effluent water was below PNEC.
In effluent water from a single STP, paracetamol occurred in a concentration 3
times higher than the estimated PNEC concentration after ten times dilution in
the recipient.
In
sludge eight out of 25 pharmaceuticals were detected. Two of these were neither
detected in influent nor effluent water.
Triclosan, which is a biocide used in for example some
tooth pastes, was detected in both influent and effluent waters at STPs. After
10 times dilution in the recipient, the maximum concentration is estimated to be
below the PNEC value. Triclosan was detected in all samples of sludge. If sludge
is applied to farmland at the highest tolerated rate, it is estimated that the
concentration of triclosan in the topsoil may exceed the PNEC for terricolous
organisms.
In
surface water downstream fish farms, six out of 31 pharmaceuticals were
detected. Four antibiotics that are applied in fish farming were detected most
frequently. Water quality criteria are established for three of the four
antibiotics in Statutory order no. 1669 of 14 December 2006 and a preliminary
water quality criterion is established for the fourth antibiotic. The detected
concentrations of antibiotics were below the water quality criteria in all cases
except for one where the concentration of sulfadiazin exceeded the
water quality criterion.
In
drainage water and ground water produced under fields where liquid manure has
been spread, no pharmaceuticals were detected. However, there was very little
precipitation during late spring and summer this year, which gave atypical
conditions for this part of the study. Equally, in surface water in areas where
liquid manure potentially is spread no pharmaceuticals, which could come from
liquid manure, were detected. However, there is no information about the amount
of liquid manure, which was spread on the fields before the surface water
sampling.
On
the basis of the findings in this screening project the steering group
recommends:
Full report in pdf-format (1.608 kB); in
danish
</BODY>
