Registration Dossier

Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Administrative data

Endpoint:
bioaccumulation in aquatic species, other
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
No guidance study, but well documented field study for the marine environment. Concentration factors represent the ration of Sr in organism to that in sea water. The chemical safety assessment of strontium chromate is based on elemental strontium and chromate concentrations and read across to strontium and chromate substances, becoming reading across from Cr(III). Justification for read across from Cr(III) is provided in the endpoint summary section.

Data source

Reference
Reference Type:
publication
Title:
Accumulation of Sr in Marine Organisms - I. Strontium and calcium contents, CF and OR values in marine organisms
Author:
Ueda T, Suzuki Y, Nakamura R
Year:
1973
Bibliographic source:
Bulletin of the Japanese Society of Scientific Fisheries 39 (12), 1253-1262

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Marine organisms were collected, ashed and Sr-contents were determined
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Sampling and analysis

Details on sampling:
Marine organisms - 241 samples of 63 species - were collected from the coastal sea of Japan.

Test organisms

Test organisms (species):
other: different marine echinoderms and coelenterata
Details on test organisms:
Collected in the coastal sea of Japan

Study design

Route of exposure:
aqueous
Test type:
field study
Water / sediment media type:
natural water: marine

Test conditions

Nominal and measured concentrations:
Nominal default concentration of 8 mg Sr/L in seawater, based on literature data

Results and discussion

Bioaccumulation factoropen allclose all
Type:
other: concentration factor CF in echinodermata
Value:
106 dimensionless
Basis:
whole body d.w.
Remarks on result:
other: Hemicentrotus pulcherrimus; 848 mg Sr/kg raw
Remarks:
Conc.in environment / dose:8 mg/L
Type:
other: concentration factor CF in echinodermata
Value:
76 dimensionless
Basis:
whole body d.w.
Remarks on result:
other: Anthocidaris crassispina; 611 mg St/kg raw
Remarks:
Conc.in environment / dose:8 mg/L
Type:
other: concentration factor CF in echinodermata
Value:
30 dimensionless
Basis:
whole body d.w.
Remarks on result:
other: coscinasterias acutispina; 239 mg Sr/kg raw
Remarks:
Conc.in environment / dose:8 mg/L
Type:
other: concentration factor CF in echinodermata
Value:
103 dimensionless
Basis:
whole body d.w.
Remarks on result:
other: Asterina pectinifera; 820 mg Sr/kg raw
Remarks:
Conc.in environment / dose:8 mg/L
Type:
other: concentration factor CF in coelenterata
Value:
0.7 dimensionless
Basis:
whole body d.w.
Remarks on result:
other: Aurelia aurita; 6 mg Sr/kg raw
Remarks:
Conc.in environment / dose:8 mg/L
Type:
other: concentration factor CF in coelenterata
Value:
0.7 dimensionless
Basis:
whole body d.w.
Remarks on result:
other: Actinia eqina; 5 mg Sr/kg raw
Remarks:
Conc.in environment / dose:8 mg/L
Reported statistics:
No statistics reported

Applicant's summary and conclusion

Conclusions:
Reported CF-values can be used in a weight of evidence approach for the determination of a BAF for strontium