Congener-Specific Accumulation and Food Chain Transfer of Polybrominated Diphenyl Ethers in Two Arctic Food Chains

2004 ◽  
Vol 38 (6) ◽  
pp. 1667-1674 ◽  
Author(s):  
Hans Wolkers ◽  
Bert van Bavel ◽  
Andrew E. Derocher ◽  
Øystein Wiig ◽  
Kit M. Kovacs ◽  
...  
Keyword(s):  
Food Chain ◽  
Polybrominated Diphenyl Ethers ◽  
Chain Transfer ◽  
Food Chains ◽  
Diphenyl Ethers ◽  
Specific Accumulation ◽  
Food Chain Transfer

Equilibrium Model of Fate of Microcontaminants in Diverse Aquatic Food Chains

1981 ◽  
Vol 38 (3) ◽  
pp. 280-296 ◽  
Author(s):  
Robert V. Thomann
Keyword(s):  
Food Chain ◽  
Chain Transfer ◽  
Body Burden ◽  
The Body ◽  
Food Chains ◽  
Chain Model ◽  
Bioaccumulation Factors ◽  
Top Predators ◽  
Food Chain Model ◽  
Food Chain Transfer

Bioconcentration and bioaccumulation factors of PCB, 239Pu, and 137Cs are compiled from the literature as a function of organism size. The distribution of field-observed bioaccumulation factors varies markedly between each substance but similarly to order of magnitude within each substance across diverse food chains. It can be inferred from the literature that PCB levels in top predators are due primarily to food chain transfer. A steady state compartment food chain model is derived for estimation of the relative effect of uptake directly from water versus food chain transfer. The model food chain transfer number f, given by αC/K + G for α = chemical absorption efficiency, C = specific consumption, K = excretion rate, and G = net organism growth rate indicates the degree of food chain accumulation. For f > 1, food chain transfer is significant; for f < 1, uptake from water is more significant. Application of the model suggests that (a) PCB body burden in top predators is due almost entirely to consumption of contaminated prey, (b) for 239Pu all of the body burden is due to uptake from the water only, and (c) observed 137Cs concentration factors are due principally to food chain transfer with a high dependence on the salinity-dependent phytoplankton adsorption.Key words: food chain model, bioconcentration, bioaccumulation, PCB, 239Pu, 137Cs, water uptake, food chain transfer

FOOD-CHAIN TRANSFER OF CADMIUM AND ZINC FROM CONTAMINATED URTICA DIOICA TO HELIX ASPERSA AND LUMBRICUS TERRESTRIS

2009 ◽  
Vol 28 (8) ◽  
pp. 1756 ◽  
Author(s):  
Danielle E. Sinnett ◽  
Mark E. Hodson ◽  
Tony R. Hutchings
Keyword(s):  
Food Chain ◽  
Chain Transfer ◽  
Lumbricus Terrestris ◽  
Helix Aspersa ◽  
Urtica Dioica ◽  
Food Chain Transfer

Assessment of Selenium Food Chain Transfer and Critical Exposure Factors for Avian Wildlife Species: Need for Site-Specific Data

2009 ◽  
pp. 312-312-31 ◽  
Author(s):  
WJ Adams ◽  
KV Brix ◽  
KA Cothern ◽  
LM Tear ◽  
RD Cardwell ◽  
...  
Keyword(s):  
Food Chain ◽  
Chain Transfer ◽  
Site Specific ◽  
Specific Data ◽  
Wildlife Species ◽  
Food Chain Transfer

scholarly journals Food-chain transfer of zinc from contaminated Urtica dioica and Acer pseudoplatanus L. to the aphids Microlophium carnosum and Drepanosiphum platanoidis Schrank

2010 ◽  
Vol 158 (1) ◽  
pp. 267-271 ◽  
Author(s):  
Danielle Sinnett ◽  
Tony R. Hutchings ◽  
Mark E. Hodson
Keyword(s):  
Food Chain ◽  
Chain Transfer ◽  
Urtica Dioica ◽  
Acer Pseudoplatanus ◽  
Food Chain Transfer

scholarly journals Aflatoxin: food chain transfer from feed to milk

2016 ◽  
Vol 11 (4) ◽  
pp. 295-297 ◽  
Author(s):  
Hans-Georg Walte ◽  
Christine Schwake-Anduschus ◽  
Rolf Geisen ◽  
Jan Fritsche
Keyword(s):  
Food Chain ◽  
Chain Transfer ◽  
Food Chain Transfer

Sublethal fish responses to short-term food chain transfer of DSP toxins: The role of somatic condition

2020 ◽  
Vol 524 ◽  
pp. 151317
Author(s):  
Raquel A.F. Neves ◽  
Silvia M. Nascimento ◽  
Luciano N. Santos
Keyword(s):  
Food Chain ◽  
Chain Transfer ◽  
Short Term ◽  
Somatic Condition ◽  
Food Chain Transfer ◽  
Dsp Toxins

Evaluation of food chain transfer of the antibiotic oxytetracycline and human risk assessment

Chemosphere ◽  
2013 ◽  
Vol 93 (6) ◽  
pp. 1009-1014 ◽  
Author(s):  
Maliwan Boonsaner ◽  
Darryl W. Hawker
Keyword(s):  
Risk Assessment ◽  
Food Chain ◽  
Chain Transfer ◽  
Human Risk Assessment ◽  
Human Risk ◽  
Food Chain Transfer

Assessing the risk of exogenously consumed pharmaceuticals in land-applied human urine

2010 ◽  
Vol 62 (6) ◽  
pp. 1335-1345 ◽  
Author(s):  
U. Khan ◽  
J. A. Nicell
Keyword(s):  
Human Health ◽  
Food Chain ◽  
Human Urine ◽  
Chain Transfer ◽  
Land Application ◽  
Methodological Framework ◽  
Pharmaceutically Active Compounds ◽  
Terrestrial Environment ◽  
Active Compounds ◽  
Food Chain Transfer

Once separated, the use of urine as fertilizer is a particular attractive proposition and can significantly mitigate the release of nutrients and pharmaceutically active compounds (PhACs) to the environment. In the current study, a simple methodological framework is proposed for assessing risks that are posed by the land application of urine, which contains PhACs, in terms of 6 selected environmental and human-health endpoints. In total, 25 commonly used PhACs were conservatively assessed using the proposed methodology and results indicated that 14 of them may pose a risk with respect to either eco-toxicological or human-health endpoints. The receiving terrestrial environment was identified as the most susceptible of the eco-toxicological endpoints and hazard to human-health was most significant through food-chain transfer. The results highlight the need to consider the potential impacts associated with pharmaceuticals and the need to pre-treat urine to address the presence of problematic PhACs before it is applied on land.

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