| Literature DB >> 4208433 |
W Hom, R W Risebrough, A Soutar.
Abstract
Analysis of dated oceanic sediments from the Santa Barbara Basin of the Southern California Bight has shown that deposition of polychlorinated biphenyls (PCB) began about 1945 and that DDE [1,1-dichloro-2-2-bis(p-chloro-phenyl)ethylene] first appeared in sediments deposited about 1952. Concentrations of both show a progressive increase through 1967; estimated deposition rates (in grams per square meter per year) in 1967 of DDE and PCB were 1.9 x 10(-4) and 1.2 x 10(-4), respectively.Entities:
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Year: 1974 PMID： 4208433 DOI： 10.1126/science.184.4142.1197
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728