Fatty acids, C16-18, barium salts

Monitoring data

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

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

Test material information

Constituent 1

Reference substance name:

Barium

EC Number:

231-149-1

EC Name:

Barium

Cas Number:

7440-39-3

IUPAC Name:

barium

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