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Environmental fate & pathways

Monitoring data

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Administrative data

Endpoint:
monitoring data
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Monitoring data (ambient and background) that were generated in National and International Monitoring surveys were analysed and relevant PEC-values were derived in line with the principles given in ECHA-Guidance documents

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report Date:
2010

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: ECHA (European Chemicals Agency), 2008. RIP 3.2: Guidance on information requirements and chemical safety assessment. Chapter R.16: Environmental Exposure Estimation.
GLP compliance:
not specified
Type of measurement:
other: ambient and background concentrations
Media:
surface water

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

Table below gives an overview of the regional RWC-ambient PEC values that are determined for dissolved barium concentrations in EU-surface waters. Measurements considered representative for their country are indicated in bold and used for the calculation of a median value for Europe. A best-fit was fitted through these points and the 50th percentile was taken. The median value of the country-specific RWC-ambient PECs, 38.9 μg Ba/L is thus considered as a relevant generic value of RWC ambient Ba-concentrations in EU-surface waters. RWC-ambient PECs are between 1.1 and 3.0 times higher than the typical background levels (calculated from the FOREGS database) for those countries.

Table: Overview of available regional RWC-ambient PEC values in EU-surface waters

Country              Regional RWC-ambient PECs       Typical background

(50P)

                                                       μg/L

Belgium        Flanders          48.7                                                        32.3

Walloon          36.2

The Netherlands Donar        61.4                                                        27.0

              EIONET          47.8

United Kingdom HMS        46.9                                                        15.6

United Kingdom EIONET        15.9(1)

United Kingdom Lit.data       134.5(2)

Finland                            24.6                                                        10.9

France –Rhone        29.4                                                        25.7

Range                     24.6 – 134.5                                 10.9 – 32.3

Median value        38.9                                                        21.5

(1) Value calculated on 4 data points and not a reliable RWC-ambient PEC

(2) Literature data that are less recent compared to the HMS-data t

An overview of all typical, country-specifc background levels in Europe is given below

 Country Median background (ug/L)  Country  Median background (ug/L) 
Austria  13.7  Latvia  58.6 
Belgium  32.3  Lithuania  44.6 
Czech Republic  25.7  Netherlands  27.0 
Denmark  43.8  Norway  4.2 
Estonia  63.0  Poland  36.6 
Finland  10.9  Portugal  15.5 
France  25.7  Slovakia  48.1 
Germany  43.9  Slovenia  1.0 
Greece  26.9  Spain  23.5 
Hungary  38.9  Sweden  11.7 
Ireland  13.6  United Kingdom  15.6 
Italy  25.1  EU + Norway  67.0 

Applicant's summary and conclusion

Conclusions:
Data can be used for exposure assesment and risk characterisation purposes of barium in the freshwater compartment