Magnitude and origin of polychlorinated biphenyl (PCB) and dichlorodiphenyltrichloroethane (DDT) compounds resuspended in southern Lake Michigan

Keri C Hornbuckle; Gretchen L Smith; Sondra M Miller; Brian J Eadie; Margaret B Lansing

doi:10.1029/2003JC001917

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Magnitude and origin of polychlorinated biphenyl (PCB) and dichlorodiphenyltrichloroethane (DDT) compounds resuspended in southern Lake Michigan

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Magnitude and origin of polychlorinated biphenyl (PCB) and dichlorodiphenyltrichloroethane (DDT) compounds resuspended in southern Lake Michigan

Keri C Hornbuckle, Gretchen L Smith, Sondra M Miller, Brian J Eadie and Margaret B Lansing

Journal of geophysical research. Oceans, Vol.109, C05017

05/2004

DOI: 10.1029/2003JC001917

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Published (Version of record)Journal of Geophysical Research: Oceans, v.109, Article No. C05017, May 18, 2004.

Abstract

[1] Polychlorinated biphenyls (PCBs) and dichlorodiphenyltrichloroethane (DDT) compounds are introduced into the water as a result of large‐scale storms and sediment resuspension in the southern basin of Lake Michigan. Settling and suspended sediments, as well as air and water samples, were collected in southern Lake Michigan over a 12 month period. Analysis of contaminant fluxes on settling particles shows that approximately 370 kg of PCBs and 110 kg of DDT compounds are resuspended in southern Lake Michigan during a single basin‐wide event (January 1999). Examination of contaminant signals indicates strong regional and temporal source‐receptor relationships between settling, suspended, and surficial sediments. The settling, suspended, and bottom surficial sediments in the shallow waters of the southern coastal region are enriched in lower molecular weight PCBs. The sediments in the water column and on the lake bottom in the deeper regions are enriched in higher molecular weight PCBs. Furthermore, falling sediments collected in the deeper regions of the lake are enriched in 4,4′‐DDT. The unique contaminant signal in deep water regions is surprising and suggests a source/receptor relationship among the bottom sediments and the sediments suspended and settling above them.

Civil and Environmental Engineering

Details

Title: Subtitle: Magnitude and origin of polychlorinated biphenyl (PCB) and dichlorodiphenyltrichloroethane (DDT) compounds resuspended in southern Lake Michigan
Creators: Keri C Hornbuckle
Gretchen L Smith
Sondra M Miller
Brian J Eadie
Margaret B Lansing
Resource Type: Journal article
Publication Details: Journal of geophysical research. Oceans, Vol.109, C05017
DOI: 10.1029/2003JC001917
ISSN: 2169-9275
eISSN: 2169-9291
Language: English
Date published: 05/2004
Academic Unit: Civil and Environmental Engineering; Occupational and Environmental Health
Record Identifier: 9983557682802771

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