Distribution of polychlorinated biphenyls and chlorinated pesticide residues in trout in the Sierra Nevada.

Levels of Polychlorinated Biphenyls in Adipose Tissue of the General Population of the Nation

Polychlorinated biphenyls (PCBs) have been reported in many different parts of the environment in this country (1-3). The purpose of this report is to present preliminary results from a monitoring program in which these materials are routinely sought and quantitated. The Human Monitoring Survey, established in 1967 by the Pesticides Program, DHEW (now Division of Pesticide Community Studies, EP...

Occurrence of Polychlorinated Biphenyls in Humans*

In 1967 the Human Monitoring Survey (1) was established by the Pesticides Program of the U.S. Department of Health, Education and Welfare (now, Division of Pesticide Community Studies, E.P.A.) to determine on a national scale the levels and trends of certain more commonlyused pesticide chemicals in the general population. Initially, this program was limited to the identification and measurement...

Polychlorinated biphenyls and toxaphene in Pacific tree frog tadpoles (Hyla regilla) from the California Sierra Nevada, USA.

Pacific tree frog (Hyla regilla) tadpoles were collected throughout the Sierra Nevada mountain range, California, USA, in 1996 and 1997 and analyzed for the presence of polychlorinated biphenyls (PCBs) and toxaphene. Whole-tadpole sigma PCB levels ranged from 244 ng/g (wet wt) at lower elevations on the western slope to 1.6 ng/g high on the eastern slope, whereas sigma toxaphene levels ranged f...

Toxicities of PCBs to Fish and Environmental Residues

Polychlorinated biphenyls (PCBs) have been found in fish and wildlife from many parts of the world at levels which may adversely affect aquatic organisms and interfere with pesticide residue analyses (1, 2, 3, 4). The environmental occurrence, uses, and present toxicological aspects of PCBs were recently reviewed by Peakall and Lincer (5), Gustaffson (6), and Risebrough (7). PCBs have gas chrom...

[Studies on the analysis of pesticide residues in foods (XL). PCB (polychlorinated biphenyls) residues in imported smelt fished from the Canadian Great Lakes].