Monitoring of Deca-Brominated Diphenyl Ether (DBDE) in sparrowhawk began in 2006.
DBDE can be released by many different processes into the environment (E.g. emissions during manufacture).
Increased concentrations can be found in air, water, soil, food, sediment, sludge, and dust.
It is not fully understood whether DBDE is degraded in the environment to other harmful chemicals.