Registration Dossier

Environmental fate & pathways

Monitoring data

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Administrative data

Endpoint:
monitoring data
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2013
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The study was well documented and meets generally accepted scientific principles, but was not conducted in compliance with GLP.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report Date:
2015

Materials and methods

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Details on sampling:
- Geographic coordinates: Lake Ontario

- Known emission sources near sampling site: Lake Ontario is the furthest downstream lake in the chain of Laurentian Great Lakes; it is impacted by human activities occurring throughout the basin of Lakes Superior, Michigan, Huron and Erie.

- Period of sampling: 2013-08-26 to 2012-11-21

- Sampling: Surface sediments were collected from 5 locations (two within Lake Ontario and three within Hamilton Harbor) using a stainless steel box corer. Round goby (Neogobius melanostomus), rainbow smelt (Osmerus mordax), alewife (Alosa pseudoharengus), and mysid shrimp (Mysis relicta) were collected using a bottom trawl. Lake trout (Salvelinus namaycush) were collected using gill nets

- Sample storage before analysis: Sediment samples were stored at 4°C in the dark. Biota samples were stored at approximately -20ºC in the dark

- Other: Personnel were prohibited from using personal care products known to contain siloxane materials on days of sample collection.

Results and discussion

Concentration
Country:
Canada
Location:
Lake Ontario
Substance or metabolite:
substance
Remarks on result:
other: Measured concentrations of MD2M were below the method detection limit in all sampled matrices.

Applicant's summary and conclusion

Conclusions:
Measured concentrations of MD2M were below the method detection limit in all sampled matrices.