1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)propane-1,3-dione

Monitoring data

Administrative data

Endpoint:

monitoring data

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Remarks:

Data from a national Norwegian environmental monitoring programme considered as reliable

Data source

Reference

Reference Type:

publication

Title:

Unnamed

Year:

2009

Report date:

2009

Materials and methods

Principles of method if other than guideline:

Background concentrations of the substance in seawater, sediment, sewage sludge, STP effluent, blue mussels were determined.

GLP compliance:

no

Type of measurement:

background concentration

Media:

other: seawater, sediment, sewage sludge, STP effluent, blue mussels

Test material

Test material information

Constituent 1

Reference substance name:

1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)propane-1,3-dione

EC Number:

274-581-6

EC Name:

1-[4-(1,1-dimethylethyl)phenyl]-3-(4-methoxyphenyl)propane-1,3-dione

Cas Number:

70356-09-1

Molecular formula:

C20H22O3

IUPAC Name:

1-(4-tert-butylphenyl)-3-(4-methoxyphenyl)propane-1,3-dione

Test material form:

solid

Details on test material:

- Name of test material (as cited in study report): Butyl methoxydibenzolmethane (BMDBM)

Study design

Details on sampling:

- Geographic coordinates: site 1) Oslo Ullevål hospital, site 2) Oslo VEAS STP, site 3) inner Oslofjord from Ramton and Gåsøya, site 4) Tromsø University hospital of Northern Norway, site 5) Breivika STP, Tromsøsund
- Known emission sources near sampling site: yes
- Period of sampling: late summer; sampling was performed after period of no or limited precipitation
- Sampling: seawater was collected in depths ranging from 10 to about 40 m using a Hiskin water sampler (5 litres) and transferred to silanised amber glass bottles (normally 2.5 litres), effluent was collected in silanised amber glass bottles (normally 2.5 litres) using an automatic composite sampler (Isco 6712) or other automatic sampling equipment, sediment and sludge were collected in 100 mL plastic containers, mussels were collected in baked (500 °C) glass
- Sample storage before analysis: all samples were processed as quickly as possible after taking the samples

Results and discussion

Concentration

Concentration 1

Country:

Norway

Location:

Oslofjord, Tromsøsund, Bømlafjord, Romsdalsfjord

Substance or metabolite:

substance

Conc.:

< 0.002 µg/L

Remarks on result:

other: Seawater, n = 20 samples

Concentration 2

Country:

Norway

Location:

Oslofjord, Tromsøsund

Substance or metabolite:

substance

Conc.:

< 5 other: ng/g dry weight

Remarks on result:

other: Sediment, n = 16

Concentration 3

Country:

Norway

Location:

Oslo, Breivika

Substance or metabolite:

substance

Conc.:

< 0.002 µg/L

Remarks on result:

other: STP effluent, n = 8

Concentration 4

Country:

Norway

Location:

Oslo, Breivika

Substance or metabolite:

substance

Conc.:

< 20 other: ng/g dry weight

Remarks on result:

other: Sewage sludge, n = 4

Concentration 5

Country:

Norway

Location:

Oslofjord, Tromsøsund

Substance or metabolite:

substance

Conc.:

< 5 other: ng/g (w/w)

Remarks on result:

other: Mussels, n = 8

Any other information on results incl. tables

The substance was not detected above the limit of detection (LOD) in any of the samples.

Applicant's summary and conclusion

Conclusions:

The substance was not detected by gas chromatography in seawater samples, sediment samples, STP effluents, sewage sludge and blue mussels collected in Norway in the framework of a national Norwegian monitoring programme.

Executive summary:

The environmental occurrence of BMDBM was surveyed in the framework of a Norwegian national environmental monitoring programme. Samples from different environmental media (seawater n = 20, sediment n = 16, STP effluent n = 8, sewage sludge n = 4, mussels n = 8) were collected during late summer. The substance was extracted by using a suitable solid phase (silica column). Analysis were performed by gas chromatography. The substance was not detected above the LOD in any of the samples.