Abstract：
:Degradation of 14C-DDT was studied in a marine ecosystem for 60 days and in marine sediments under moist and flooded conditions using a continuous flow system for a period of 130 days. 14C-DDT residues were recovered in sediments of the marine ecosystem at uniform level of 60-65% of the applied 14C-activity throughout the incubation period. DDD was a major metabolite in sediments while DDMU was a major metabolite in clams. Clams brought about substantial degradation of DDT. However, 14C-residues recovered form clams are not suggestive of significant bioaccumulation. In the continuous flow experiment, under both moist and flooded conditions, DDT underwent degradation and about 22% of the applied 14C-activity was recovered as volatiles under both conditions. In sediments, extractable 14C-residues accounted for about 30 and 19% under moist and flooded conditions, respectively. DDT was the major compound in extractable residues as identified by TLC-autoradiographic procedures. More bound residues were formed under flooded than under moist conditions.
journal_name
Chemospherejournal_title
Chemosphereauthors
Kale SP,Murthy NB,Raghu K,Sherkhane PD,Carvalho FPdoi
10.1016/s0045-6535(99)00027-2subject
Has Abstractpub_date
1999-09-01 00:00:00pages
959-68issue
6eissn
0045-6535issn
1879-1298pii
S0045653599000272journal_volume
39pub_type
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