Registration Dossier

Administrative data

Endpoint:
monitoring data
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment

Data source

Reference
Reference Type:
publication
Title:
Occurrence and profiles of organic sun-blocking agents in surface water and sediments in Japanese rivers and lakes
Author:
Yutaka Kameda, Kumiko Kimura, Motonobu Miyazaki
Year:
2011
Bibliographic source:
Environmental Pollution 159, 1570-1576

Materials and methods

Test guideline
Qualifier:
no guideline required
GLP compliance:
no
Type of measurement:
other:
Remarks:
occurrence and profiles
Media:
other: surface water and sediments

Test material

Specific details on test material used for the study:
following UV light stabilizer (UVLS) were investigated:
- 2-(2-Hydroxy-5-methylphenyl)-benzotriazole (UV-P)
- 2-(5-Chloro-2-benzotriazolyl)-6-tert-butyl-p-cresol (UV-326)
- 2,4-Di-t-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol (UV-327)
- 2-(20-Hydroxy-30,50-di-tert-amylphenyl) benzotriazole (UV-328)
- 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol (UV-329)
- 2,4-Di-t-butylphenyl-3,5-Di-t-butyl-4-hydroxybenzoate (UV-120)
- 2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl) phenol (UV-234)
- 2-(4,6-Diphenyl-1,3,5-triazine-2-yl)-5-[(hexyl)oxy]-phenol (UV-1577)

Study design

Details on sampling:
Surface water and sediment samples were taken from rivers (22 sites), lakes (3 sites) and sewage treatment plat effluents (STPE) (4 sites) in Saitama Prefecture, Japan, in August and September 2008. Samples were collected from 29 sampling sites: 2 streams with direct inputs of domestic wastewater, 4 STPE, 6 rivers that have been heavily polluted by industrial and domestic wastewaters, 12 moderately contaminated rivers, 2 little contaminated rivers and 3 lakes as background sites. All samples were grab samples.

Results and discussion

Concentrationopen allclose all
Key result
Country:
Japan
Location:
Saitama Prefecture
Substance or metabolite:
substance
Remarks:
UV-1577
Remarks on result:
not determinable
Remarks:
Mean detected concentration in surface water (streams)
Key result
Country:
Japan
Location:
Saitama Prefecture
Substance or metabolite:
substance
Remarks:
UV1577
Remarks on result:
not determinable
Remarks:
Mean detected concentration in surface water (STPE)
Key result
Country:
Japan
Location:
Saitama Prefecture
Substance or metabolite:
substance
Remarks:
UV-1577
Remarks on result:
not determinable
Remarks:
Mean detected concentration in surface water (heavily polluted rivers)
Key result
Country:
Japan
Location:
Saitama Prefecture
Substance or metabolite:
substance
Remarks:
UV-1577
Remarks on result:
not determinable
Remarks:
Mean detected concentration in surface water (moderately polluted rivers)
Key result
Country:
Japan
Location:
Saitama Prefecture
Substance or metabolite:
substance
Remarks:
UV-1577
Remarks on result:
not determinable
Remarks:
Mean detected concentration in surface water (background sites)
Key result
Country:
Japan
Location:
Saitama Prefecture
Substance or metabolite:
substance
Remarks:
UV-1577
Remarks on result:
not determinable
Remarks:
Mean detected concentration in sediment (streams)
Key result
Country:
Japan
Location:
Saitama Prefecture
Substance or metabolite:
substance
Remarks:
UV-1577
Remarks on result:
not determinable
Remarks:
Mean detected concentration in sediment (STPE)
Key result
Country:
Japan
Location:
Saitama Prefecture
Substance or metabolite:
substance
Remarks:
UV-1577
Remarks on result:
not determinable
Remarks:
Mean detected concentration in sediment (heavily polluted rivers)
Key result
Country:
Japan
Location:
Saitama Prefecture
Substance or metabolite:
substance
Remarks:
UV-1577
Remarks on result:
not determinable
Remarks:
Mean detected concentration in sediment (moderately polluted rivers)
Key result
Country:
Japan
Location:
Saitama Prefecture
Substance or metabolite:
substance
Remarks:
UV-1577
Remarks on result:
not determinable
Remarks:
Mean detected concentration in sediment (background sites)

Any other information on results incl. tables

Surface water:

The recovery ratios of all eighteen analyte samples ranged from 80 to 113%, except for UV-1577, which had a slightly higher recovery ratio. The limits of detection (LODs) ranged from 0.1 to 3.0 ng/L.

Sediment:

The recovery ratios of all compounds ranged from 70 to 125%. The LODs in the sediment samples were relatively low, ranging from 0.05 to 1.0 ng/g dry weight, except for UV-328. Procedural blanks showed UV-328 in each analysis. Therefore, the LOD of UV-328 was determined to be 10 ng/g dry weight.

Applicant's summary and conclusion

Conclusions:
The study showed the occurrence and concentrations of UV light stabilizers (UVLS) in surface water and sediment from rivers, lakes, STPE and industrial wastewaters. UV-1577 was not detected in surfacewater samples
or sediment samples at any sampling sites. UV-1577 is used in the manufacture of high quality polycarbonate roofing sheets, laminating films, polyethylene terephthalate films, articles intended to come into contact with foodstuffs, etc. There is little information available regarding the presence of UV-1577 in Japan; however, the leaching of this compound to the environment as a result of polymer weathering or disposal is estimated to be negligible because it is encapsulated and locked into the chemical structure.
Executive summary:

The occurrence of UV light stabilizers (UVLS) were measured in water and sediment collected from 22 rivers, four sewage treatment plant effluents (STPE) and three lakes in Japan. UV-1577 was not detected in surfacewater samples or sediment samples at any sampling sites.