Publication Abstract

The accumulation and retention of 99mTc by the Norway lobster

D.J. Swift

Laboratory experiments were carried out to study bioaccumulation and determine a concentration factor (CF) for technetium (9smTc) in the homarid crustacean Nephrops norvegicus. The steady state CF for accumulation from seawater was estimated to be about 2000 and the biological half-time was abut 50 days. The highest tissue Tc concentrations were found in the green gland and the digestive gland. Deuration following accumulation from water was slow with a half-time of about 165 days.

Tc acccumulation from labelled food followed a biphasic model with one compartment containing about 94 percent of the ingested activity and with a half-time of about 1 day and the second compartment containing about 6 percent ofthe ingested activity with a half-time of about 56 days. Most retsined activity was found in the digestive gland

Reference:

D.J. Swift, 2001. The accumulation and retention of 99mTc by the Norway lobster. Journal of Environmental Radioactivity , 57(2):139-149