The ratios of (DDE + DDD)/DDTs reflected a mixed input of accumulated and fresh DDTs in Shengsi, Putuo.
The ratios of o,p0
-DDT/p,p0
-DDT in seafoods of Shengsi ranged 0.10–0.60 (mean 0.33), indicating that
DDTs in seafoods of Shengsi may partly contain dicofol products and other pollutants accumulated in
Yangtze Estuary