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Title: Regional spatial and temporal interpolation of atmospheric PCBs: Interpretation of Lake Michigan mass balance data

Abstract

During the Lake Michigan Mass Balance (LMMB) Project, over 600 atmospheric samples were collected at eight shoreline sites and during seven cruises. These samples were analyzed for persistent organic pollutants, including PCB congeners, atrazine, and trans-nonachlor. The authors have developed a method for interpreting the gas-phase data that includes fractionating the observed PCB concentration into land- and water-based sources. This approach accounts for differences in gas-phase atmospheric PCB concentration over water and over land. Using this fractionation approach, they have interpolated the measured data over time and space to predict PCB air concentrations over the lake during the LMMB field period. The results predict gas-phase {Sigma}PCB (sum of {approximately}98 congener groups) concentrations for each of 2,319 grid cells over the lake, on a monthly basis. The authors estimate that lake-wide monthly average {sigma}PCB gas-phase concentrations range from 0.136 to 1.158 ng/m{sup 3}, with an annual average PCB concentration of 0.457 ng/m{sup 3}. As expected, the highest concentrations of PCBs over the lake when the winds are from the southwest (out of the Chicago-Gary region) and when land surface temperatures are elevated. The predicted influence of Chicago is described on a monthly basis as a zone of elevated PCB concentrations formore » approximately 40 km into Lake Michigan.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Univ. at Buffalo, NY (US)
OSTI Identifier:
20080525
Resource Type:
Journal Article
Journal Name:
Environmental Science and Technology
Additional Journal Information:
Journal Volume: 34; Journal Issue: 9; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0013-936X
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AIR POLLUTION; REGIONAL ANALYSIS; POLYCHLORINATED BIPHENYLS; LAKE MICHIGAN; AIR POLLUTION MONITORING; POLLUTION SOURCES

Citation Formats

Green, M.L., Depinto, J.V., Sweet, C., and Hornbuckle, K.C. Regional spatial and temporal interpolation of atmospheric PCBs: Interpretation of Lake Michigan mass balance data. United States: N. p., 2000. Web. doi:10.1021/es990374w.
Green, M.L., Depinto, J.V., Sweet, C., & Hornbuckle, K.C. Regional spatial and temporal interpolation of atmospheric PCBs: Interpretation of Lake Michigan mass balance data. United States. doi:10.1021/es990374w.
Green, M.L., Depinto, J.V., Sweet, C., and Hornbuckle, K.C. Mon . "Regional spatial and temporal interpolation of atmospheric PCBs: Interpretation of Lake Michigan mass balance data". United States. doi:10.1021/es990374w.
@article{osti_20080525,
title = {Regional spatial and temporal interpolation of atmospheric PCBs: Interpretation of Lake Michigan mass balance data},
author = {Green, M.L. and Depinto, J.V. and Sweet, C. and Hornbuckle, K.C.},
abstractNote = {During the Lake Michigan Mass Balance (LMMB) Project, over 600 atmospheric samples were collected at eight shoreline sites and during seven cruises. These samples were analyzed for persistent organic pollutants, including PCB congeners, atrazine, and trans-nonachlor. The authors have developed a method for interpreting the gas-phase data that includes fractionating the observed PCB concentration into land- and water-based sources. This approach accounts for differences in gas-phase atmospheric PCB concentration over water and over land. Using this fractionation approach, they have interpolated the measured data over time and space to predict PCB air concentrations over the lake during the LMMB field period. The results predict gas-phase {Sigma}PCB (sum of {approximately}98 congener groups) concentrations for each of 2,319 grid cells over the lake, on a monthly basis. The authors estimate that lake-wide monthly average {sigma}PCB gas-phase concentrations range from 0.136 to 1.158 ng/m{sup 3}, with an annual average PCB concentration of 0.457 ng/m{sup 3}. As expected, the highest concentrations of PCBs over the lake when the winds are from the southwest (out of the Chicago-Gary region) and when land surface temperatures are elevated. The predicted influence of Chicago is described on a monthly basis as a zone of elevated PCB concentrations for approximately 40 km into Lake Michigan.},
doi = {10.1021/es990374w},
journal = {Environmental Science and Technology},
issn = {0013-936X},
number = 9,
volume = 34,
place = {United States},
year = {2000},
month = {5}
}