Stable nitrogen isotope ratios and accumulation of various HOCs in northern Baltic aquatic food chains

Broman, D; Axelman, J; Bergqvist, P A; Naef, C; Rolff, C; Zebuehr, Y

Title: Stable nitrogen isotope ratios and accumulation of various HOCs in northern Baltic aquatic food chains

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Abstract

Ratios of naturally occurring stable isotopes of nitrogen ({delta}{sup 15}N) can be used to numerically classify trophic levels of organisms in food chains. By combining analyses results of various HOCs (e.g. PCDD/Fs, PCBs, DDTs, HCHs and some other pesticides) the biomagnification of these substances can be quantitatively estimated. In this paper different pelagic and benthic northern Baltic food chains were studied. The {delta}{sup 15}N-data gave food chain descriptions qualitatively consistent with previous conceptions of trophic arrangements in the food chains. The different HOCs concentrations were plotted versus the {delta}{sup 15}N-values for the different trophic levels and an exponential model of the form e{sup (A+B*{delta}N)} was fitted to the data. The estimates of the constant B in the model allows for an estimation of a biomagnification power (B) of different singular, or groups of, contaminants. A B-value around zero indicates that a substance is flowing through the food chain without being magnified, whereas a value > 0 indicates that a substance is biomagnified. Negative B-values indicate that a substance is not taken up or is metabolized. The A-term of the expression is only a scaling factor depending on the background level of the contaminant.

Authors:

Broman, D; Axelman, J; Bergqvist, P A; Naef, C; Rolff, C; Zebuehr, Y ^[1]

Stockholm Univ. (Sweden)

Publication Date:: Sun Dec 31 00:00:00 EST 1995

OSTI Identifier:: 191318

Report Number(s):: CONF-9511137-
ISBN 1-880611-03-1; TRN: IM9610%%319

Resource Type:: Conference

Resource Relation:: Conference: 2. Society of Environmental Toxicology and Chemistry (SETAC) world conference, Vancouver (Canada), 5-9 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of Second SETAC world congress (16. annual meeting): Abstract book. Global environmental protection: Science, politics, and common sense; PB: 378 p.

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; 56 BIOLOGY AND MEDICINE, APPLIED STUDIES; BALTIC SEA; WATER POLLUTION; FOOD CHAINS; DIOXIN; BIOLOGICAL ACCUMULATION; FURANS; POLYCHLORINATED BIPHENYLS; HYDROCARBONS; ISOTOPE RATIO; NITROGEN 15

Citation Formats


                    Broman, D, Axelman, J, Bergqvist, P A, Naef, C, Rolff, C, and Zebuehr, Y. Stable nitrogen isotope ratios and accumulation of various HOCs in northern Baltic aquatic food chains.  United States: N. p., 1995. 
        Web.

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                    Broman, D, Axelman, J, Bergqvist, P A, Naef, C, Rolff, C, & Zebuehr, Y. Stable nitrogen isotope ratios and accumulation of various HOCs in northern Baltic aquatic food chains.  United States.

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                    Broman, D, Axelman, J, Bergqvist, P A, Naef, C, Rolff, C, and Zebuehr, Y. 1995.  
        "Stable nitrogen isotope ratios and accumulation of various HOCs in northern Baltic aquatic food chains".  United States.

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@article{osti_191318,

  title        = {Stable nitrogen isotope ratios and accumulation of various HOCs in northern Baltic aquatic food chains},

  author       = {Broman, D and Axelman, J and Bergqvist, P A and Naef, C and Rolff, C and Zebuehr, Y},

  abstractNote = {Ratios of naturally occurring stable isotopes of nitrogen ({delta}{sup 15}N) can be used to numerically classify trophic levels of organisms in food chains. By combining analyses results of various HOCs (e.g. PCDD/Fs, PCBs, DDTs, HCHs and some other pesticides) the biomagnification of these substances can be quantitatively estimated. In this paper different pelagic and benthic northern Baltic food chains were studied. The {delta}{sup 15}N-data gave food chain descriptions qualitatively consistent with previous conceptions of trophic arrangements in the food chains. The different HOCs concentrations were plotted versus the {delta}{sup 15}N-values for the different trophic levels and an exponential model of the form e{sup (A+B*{delta}N)} was fitted to the data. The estimates of the constant B in the model allows for an estimation of a biomagnification power (B) of different singular, or groups of, contaminants. A B-value around zero indicates that a substance is flowing through the food chain without being magnified, whereas a value > 0 indicates that a substance is biomagnified. Negative B-values indicate that a substance is not taken up or is metabolized. The A-term of the expression is only a scaling factor depending on the background level of the contaminant.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/191318},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Dec 31 00:00:00 EST 1995},

  month        = {Sun Dec 31 00:00:00 EST 1995}

}

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