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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Monitoring data

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Administrative data

monitoring data
Type of information:
other: publication
Adequacy of study:
supporting study
Study period:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well-documented publication
Cross-referenceopen allclose all
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study

Data source

Reference Type:
Purgeable aromatic hydrocarbons in water and sediment from the River Morava catchment (Slovakia).
Al-Rekabi, H. et al.
Bibliographic source:
Bull. Environ. Contam. Toxicol. 56:90-97

Materials and methods

Principles of method if other than guideline:
Modified EPA method 503.1: open-loop dynamic headspace technique adapted according to Bianchi et al. (1991, J. Chromatogr 542: 413-450)
GLP compliance:
not specified
Type of measurement:
natural background concentration
other: water and sediment

Test material

Constituent 1
Chemical structure
Reference substance name:
EC Number:
EC Name:
Cas Number:
Molecular formula:
Details on test material:
- Name of test material (as cited in study report): Ethylbenzene

Study design

Details on sampling:
- Sample storage before analysis: Samples were transorted in a cool box.

Results and discussion

Details on results:

Any other information on results incl. tables

The mean of the peak area and % relative standard deviation (RSD) for different concentrations of ethylbenzene in water and sediment using PTI-GC:

reagent water river water sediment

(Conc.: 0.1 µg/l, 0.1 µg/kg)
(Conc.: 1 µg/l, 1 µg/kg)
(Conc.: 10 µg/l, 10 µg/kg)
(Conc.: 100 µg/l, 100 µg/kg)


Recoveries and method detection limits (MDL):
Water: recovery: 93.7 %RSD: 8.1 MDL: 0.03 mg/l
sediment: recovery: 55.7 %RSD: 13.6MDL: 0.04 mg/kg

The results indicated that seasonal fluctuation in the concentration is primarily a function of temporal changes in volatile loadings and the temperature variation in the river ecosystem.

Detectable concentrations ethylbenzene in water samples (µg/l):
River Mlaka (station 8): only spring 1.55; Mlaka (station 9) only in spring 4.69
Detectable concentrations of ethylbenzene in sediment samples (µg/l):
River Mlaka (station 8): only in spring 2.66; Mlaka (station 9): in winter 6.84 and in spring 4.69

Station 1-7, in water and sediment samples: ethylbenzene was not detectable

Applicant's summary and conclusion

Ethylbenzene was detected in the spring at Mláka 8 and 9 in both water and sediment samples.

Executive summary:

Myjava and Rudava Rivers contained relatively higher concentrations of volatile aromatics than Malina and Mláka Rivers. The changes in water quality, which may occur with season, may have a direct relation on the accumulation and evaporation of volatile aromatics in water and sediment . The typical temperate ecosystem might show a spring season of a high run-off and a high water level causing turbid waters . Both these effects would tend to increase the concentration of volatile aromatics present in - water

and sediment. Because the volatile aromatic compounds routinely represent a large portion of total VOCs in water and sediment, by knowing their concentration in water and sediment one can evaluate the water quality of the River Morava.