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@ARTICLE{Bettinetti:131717,
author = {R. Bettinetti and A. Kopp-Schneider$^*$ and D. A. L.
Vignati},
title = {{T}he {E}uropean water-based environmental quality standard
for pentachlorophenol is {NOT} protective of benthic
organisms.},
journal = {The science of the total environment},
volume = {613-614},
issn = {0048-9697},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {DKFZ-2018-00023},
pages = {39 - 45},
year = {2018},
abstract = {Risk management of toxic substances is often based on
Environmental Quality Standards (EQS) set for the water
compartment, assuming they will also protect benthic
organisms. In the absence of experimental data, EQS for
sediments can be estimated by the equilibrium partitioning
approach. The present study investigates whether this
approach is protective of benthic organisms against
pentachlorophenol (PCP), a legacy contaminant and EU
priority substance still used in some parts of the world.
Three freshwater species of invertebrates with different
life cycles and feeding behaviors (the oligochaetes
Lumbriculus variegatus, Tubifex tubifex and the dipteran
insect Chironomus riparius) were exposed to PCP spiked
sediments (2.10-46.03mgPCP/kg d.w. plus controls) in
laboratory standard tests. Exposure duration was 28days for
T. tubifex and L. variegatus and 10 and 28days for C.
riparius; according to the corresponding OECD guidelines.
For each investigated end-point, dose-response data were
normalized to the mean control and fitted to a
four-parameter log-logistic model for calculating the
corresponding EC50 and EC10. The ranges for EC50 and EC10
estimates were 4.39 (Chironomus riparius-emergence)-27.50
(Tubifex tubifex-cocoon) and 0.30 (T. tubifex-young worms)
-16.70 (T. tubifex-cocoon) mg/kg d.w., respectively. The
EC50 and the EC10 values of L. variegatus were within these
ranges. Following the EU Technical Guidance for deriving
EQS, the lowest EC10 value of 0.30mg/kg (T. tubifex-young
worms) resulted in a PCP quality standard (QS) for sediments
of 30ng/g, about one fourth of the tentative QS of 119ng/g
estimated by the equilibrium partitioning (EqP) approach.
The response of benthic biota to PCP varied across organisms
and across end-points for the same organism, so that the use
of sediment PCP-QS calculated using the EqP-approach may be
under-protective of the most sensitive organisms.
Information on the possible effects of PCP on resident
organisms must therefore be collected for appropriately
managing aquatic systems.},
cin = {C060},
ddc = {333.7},
cid = {I:(DE-He78)C060-20160331},
pnm = {313 - Cancer risk factors and prevention (POF3-313)},
pid = {G:(DE-HGF)POF3-313},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28898810},
doi = {10.1016/j.scitotenv.2017.09.055},
url = {https://inrepo02.dkfz.de/record/131717},
}