By means of the environmental fate and distribution models laid down in the Technical Guidance Documents (TGD) and implemented in the European Union System for the Evaluation of Substances (EUSES) environmental concentrations of the polycyclic musk fragrance HHCB (1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-[g]-2- benzopyrane; trade name: e.g. Galaxolide) were calculated for the aquatic environment under consideration of various scenarios. The results were then compared to monitoring data from the region of North Rhine-Westphalia (River Ruhr). An uncertainty analysis was carried out to determine sensitive parameters, to integrate environmental variability and to confirm the model's calculations. The standard scenario of EUSES overestimates the measured concentrations, which confirms the conservative nature of the calculations. The regional-specific scenarios lead to lower deviations from the measured values than the standard scenario. Deviations range from one to two orders of magnitude in the effluent of sewage treatment plants; they amount to one order of magnitude for surface water concentrations on a local scale and conform to monitoring data on a regional scale. The use of measured bioconcentration factors for fish instead of estimated ones reduces deviations remarkably. The investigation reveals that unrealistic worst-case calculations of HHCB can at best be ameliorated by the application of more realistic emission rates and measured bioconcentration factors. The use of regional-specific parameters also diminishes the deviations of the calculations from the measured concentrations.
[1]
Michael Matthies,et al.
Visualisation of the complexity of EUSES
,
1999,
Environmental science and pollution research international.
[2]
H.-D. Eschke,et al.
Untersuchungen zum Vorkommen polycyclischer Moschus-Duftstoffe in verschiedenen Umweltkompartimenten
,
1994
.
[3]
Heinrich Hühnerfuss,et al.
Results of non target screening of lipophilic organic pollutants in the German Bight II : Polycyclic musk fragrances
,
1998
.
[4]
J. Hellou,et al.
Polycyclic and nitro musks in the environment: A comparison between Canadian and European aquatic biota
,
1999
.
[5]
H.-D. Eschke,et al.
Nachweis und Quantifizierung von Polycyclischen Moschus-Duftstoffen mittels Ion-Trap GC/MS/MS in Humanfett und Muttermilch
,
1995
.
[6]
P. Spencer,et al.
Neurotoxic fragrance produces ceroid and myelin disease.
,
1979,
Science.
[7]
Plassche Ej van de,et al.
Environmental risk assessment of the polycyclic musksAHTN and HHCB according to the EU-TGD
,
1997
.
[8]
G. Rimkus,et al.
Polycyclic musk fragrances in human adipose tissue and human milk.
,
1996,
Chemosphere.
[9]
T. Neu,et al.
Fate of artificial musk fragrances associated with suspended particulate matter (SPM) from the river Elbe (Germany) in comparison to other organic contaminants
,
1998
.