Assimilation efficiency of sediment‐bound PCBs ingested by fish impacted by strong sorption
Uptake of polychlorinated biphenyls (PCBs) by fish is controlled by the bioavailability of ingested PCBs in the gut and the freely dissolved concentration in the water moving across the gills. The prediction of bioaccumulation in fish relies on models that account for these exposure routes; however,...
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Veröffentlicht in: | Environmental toxicology and chemistry 2017-12, Vol.36 (12), p.3480-3488 |
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description | Uptake of polychlorinated biphenyls (PCBs) by fish is controlled by the bioavailability of ingested PCBs in the gut and the freely dissolved concentration in the water moving across the gills. The prediction of bioaccumulation in fish relies on models that account for these exposure routes; however, these models typically do not account for incidental ingestion of sediment by fish, which is not well studied. The literature values for the PCB assimilation efficiency in the gut have been reported for compounds in food matrices and not associated with sediment particles. It is also unclear how mitigation strategies that alter PCB bioavailability in sediments affect predictions made by the bioaccumulation models when sediment ingestion is involved. To test the bioavailability of PCBs from treated and untreated sediments, dietary assimilation efficiencies were measured for 16 PCB congeners in mummichogs (Fundulus heteroclitus) that were fed 4 experimental diets. Diets consisted of PCB‐spiked earthworms, spiked untreated sediment mixed with earthworms, spiked activated carbon‐treated sediment mixed with earthworms, and spiked activated carbon mixed with earthworms. Assimilation efficiencies were determined by calculating the ratio of PCB mass in the fish tissue to the PCB mass in the food after a pulse feeding experiment. Assimilation efficiencies of PCBs associated with earthworm diet were similar to the values reported in the literature. Fish that were fed the PCB‐spiked untreated sediment and activated carbon particles exhibited the highest and lowest assimilation efficiencies, respectively, over a wide KOW range. Assimilation efficiencies of sediment‐bound PCBs were significantly reduced (31–93% reduction for different congeners) after amendment with activated carbon. The present study indicates that assimilation of PCBs can be reduced by sorption to black carbon. Environ Toxicol Chem 2017;36:3480–3488. © 2017 SETAC |
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The prediction of bioaccumulation in fish relies on models that account for these exposure routes; however, these models typically do not account for incidental ingestion of sediment by fish, which is not well studied. The literature values for the PCB assimilation efficiency in the gut have been reported for compounds in food matrices and not associated with sediment particles. It is also unclear how mitigation strategies that alter PCB bioavailability in sediments affect predictions made by the bioaccumulation models when sediment ingestion is involved. To test the bioavailability of PCBs from treated and untreated sediments, dietary assimilation efficiencies were measured for 16 PCB congeners in mummichogs (Fundulus heteroclitus) that were fed 4 experimental diets. Diets consisted of PCB‐spiked earthworms, spiked untreated sediment mixed with earthworms, spiked activated carbon‐treated sediment mixed with earthworms, and spiked activated carbon mixed with earthworms. Assimilation efficiencies were determined by calculating the ratio of PCB mass in the fish tissue to the PCB mass in the food after a pulse feeding experiment. Assimilation efficiencies of PCBs associated with earthworm diet were similar to the values reported in the literature. Fish that were fed the PCB‐spiked untreated sediment and activated carbon particles exhibited the highest and lowest assimilation efficiencies, respectively, over a wide KOW range. Assimilation efficiencies of sediment‐bound PCBs were significantly reduced (31–93% reduction for different congeners) after amendment with activated carbon. The present study indicates that assimilation of PCBs can be reduced by sorption to black carbon. 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The prediction of bioaccumulation in fish relies on models that account for these exposure routes; however, these models typically do not account for incidental ingestion of sediment by fish, which is not well studied. The literature values for the PCB assimilation efficiency in the gut have been reported for compounds in food matrices and not associated with sediment particles. It is also unclear how mitigation strategies that alter PCB bioavailability in sediments affect predictions made by the bioaccumulation models when sediment ingestion is involved. To test the bioavailability of PCBs from treated and untreated sediments, dietary assimilation efficiencies were measured for 16 PCB congeners in mummichogs (Fundulus heteroclitus) that were fed 4 experimental diets. Diets consisted of PCB‐spiked earthworms, spiked untreated sediment mixed with earthworms, spiked activated carbon‐treated sediment mixed with earthworms, and spiked activated carbon mixed with earthworms. Assimilation efficiencies were determined by calculating the ratio of PCB mass in the fish tissue to the PCB mass in the food after a pulse feeding experiment. Assimilation efficiencies of PCBs associated with earthworm diet were similar to the values reported in the literature. Fish that were fed the PCB‐spiked untreated sediment and activated carbon particles exhibited the highest and lowest assimilation efficiencies, respectively, over a wide KOW range. Assimilation efficiencies of sediment‐bound PCBs were significantly reduced (31–93% reduction for different congeners) after amendment with activated carbon. The present study indicates that assimilation of PCBs can be reduced by sorption to black carbon. Environ Toxicol Chem 2017;36:3480–3488. © 2017 SETAC</description><subject>Activated carbon</subject><subject>Adsorption</subject><subject>Animal tissues</subject><subject>Animals</subject><subject>Assimilation</subject><subject>Assimilation efficiency</subject><subject>Bioaccumulation</subject><subject>Bioavailability</subject><subject>Biological assimilation</subject><subject>Biological Availability</subject><subject>Black carbon</subject><subject>Carbon</subject><subject>Charcoal - chemistry</subject><subject>Congeners</subject><subject>Diet</subject><subject>Diet - veterinary</subject><subject>Fish</subject><subject>Fishes</subject><subject>Fundulus heteroclitus</subject><subject>Geologic Sediments - chemistry</subject><subject>Gills</subject><subject>Ingestion</subject><subject>Mathematical models</subject><subject>Oligochaeta</subject><subject>Oligochaeta - chemistry</subject><subject>PCB</subject><subject>Polychlorinated biphenyls</subject><subject>Polychlorinated Biphenyls - analysis</subject><subject>Sediments</subject><subject>Sorption</subject><subject>Water Pollutants, Chemical - analysis</subject><issn>0730-7268</issn><issn>1552-8618</issn><issn>1552-8618</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kV1rFDEUhoNY7FoFf4EEvPFm2nxsJsmN0C71Awr1Qi8lJJmTbcpMsk5mlL3zJ_Q3-kvM2u2igleBk4fnvIcXoReUnFJC2BlM_pRrzh6hBRWCNaql6jFaEMlJI1mrjtHTUm4Joa3W-gk6Zkq2nNLlAn05LyUOsbdTzAlDCNFHSH6Lc8AFujhAmn7-uHN5Th3-uLooOKY1lAk67LY4xHKD47Cxfj8o05jTGpc8bnbCZ-go2L7A8_17gj6_vfy0et9cXb_7sDq_avxS1rjegeZUQ1BLrr12tmNStx0NIaiWOCY4Z8QGYB44Cyq0HQjiNRNOOHCS8BP05t67md0Ana-hR9ubzRgHO25NttH8_ZPijVnnb0ZIIphmVfB6Lxjz17neZ4ZYPPS9TZDnYmhdxuRSSlrRV_-gt3keUz2vUq0Sissa-CD0Yy5lhHAIQ4nZdWZqZ2bXWUVf_hn-AD6UVIHmHvgee9j-V2Qq81v4C26lovs</recordid><startdate>201712</startdate><enddate>201712</enddate><creator>Fadaei, Hilda</creator><creator>Williams, Ernest</creator><creator>Place, Allen R.</creator><creator>Connolly, John P.</creator><creator>Ghosh, Upal</creator><general>Blackwell Publishing Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>7T7</scope><scope>7TK</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>K9.</scope><scope>P64</scope><scope>RC3</scope><scope>SOI</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>201712</creationdate><title>Assimilation efficiency of sediment‐bound PCBs ingested by fish impacted by strong sorption</title><author>Fadaei, Hilda ; Williams, Ernest ; Place, Allen R. ; Connolly, John P. ; Ghosh, Upal</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4752-cbe9319ef8439c9bad2796d1fff860b253320afe2ce32f8f6de50c925b5beb703</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Activated carbon</topic><topic>Adsorption</topic><topic>Animal tissues</topic><topic>Animals</topic><topic>Assimilation</topic><topic>Assimilation efficiency</topic><topic>Bioaccumulation</topic><topic>Bioavailability</topic><topic>Biological assimilation</topic><topic>Biological Availability</topic><topic>Black carbon</topic><topic>Carbon</topic><topic>Charcoal - chemistry</topic><topic>Congeners</topic><topic>Diet</topic><topic>Diet - veterinary</topic><topic>Fish</topic><topic>Fishes</topic><topic>Fundulus heteroclitus</topic><topic>Geologic Sediments - chemistry</topic><topic>Gills</topic><topic>Ingestion</topic><topic>Mathematical models</topic><topic>Oligochaeta</topic><topic>Oligochaeta - chemistry</topic><topic>PCB</topic><topic>Polychlorinated biphenyls</topic><topic>Polychlorinated Biphenyls - analysis</topic><topic>Sediments</topic><topic>Sorption</topic><topic>Water Pollutants, Chemical - analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fadaei, Hilda</creatorcontrib><creatorcontrib>Williams, Ernest</creatorcontrib><creatorcontrib>Place, Allen R.</creatorcontrib><creatorcontrib>Connolly, John P.</creatorcontrib><creatorcontrib>Ghosh, Upal</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Neurosciences Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>Environment Abstracts</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Environmental toxicology and chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fadaei, Hilda</au><au>Williams, Ernest</au><au>Place, Allen R.</au><au>Connolly, John P.</au><au>Ghosh, Upal</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Assimilation efficiency of sediment‐bound PCBs ingested by fish impacted by strong sorption</atitle><jtitle>Environmental toxicology and chemistry</jtitle><addtitle>Environ Toxicol Chem</addtitle><date>2017-12</date><risdate>2017</risdate><volume>36</volume><issue>12</issue><spage>3480</spage><epage>3488</epage><pages>3480-3488</pages><issn>0730-7268</issn><issn>1552-8618</issn><eissn>1552-8618</eissn><abstract>Uptake of polychlorinated biphenyls (PCBs) by fish is controlled by the bioavailability of ingested PCBs in the gut and the freely dissolved concentration in the water moving across the gills. The prediction of bioaccumulation in fish relies on models that account for these exposure routes; however, these models typically do not account for incidental ingestion of sediment by fish, which is not well studied. The literature values for the PCB assimilation efficiency in the gut have been reported for compounds in food matrices and not associated with sediment particles. It is also unclear how mitigation strategies that alter PCB bioavailability in sediments affect predictions made by the bioaccumulation models when sediment ingestion is involved. To test the bioavailability of PCBs from treated and untreated sediments, dietary assimilation efficiencies were measured for 16 PCB congeners in mummichogs (Fundulus heteroclitus) that were fed 4 experimental diets. Diets consisted of PCB‐spiked earthworms, spiked untreated sediment mixed with earthworms, spiked activated carbon‐treated sediment mixed with earthworms, and spiked activated carbon mixed with earthworms. Assimilation efficiencies were determined by calculating the ratio of PCB mass in the fish tissue to the PCB mass in the food after a pulse feeding experiment. Assimilation efficiencies of PCBs associated with earthworm diet were similar to the values reported in the literature. Fish that were fed the PCB‐spiked untreated sediment and activated carbon particles exhibited the highest and lowest assimilation efficiencies, respectively, over a wide KOW range. Assimilation efficiencies of sediment‐bound PCBs were significantly reduced (31–93% reduction for different congeners) after amendment with activated carbon. The present study indicates that assimilation of PCBs can be reduced by sorption to black carbon. Environ Toxicol Chem 2017;36:3480–3488. © 2017 SETAC</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>28763114</pmid><doi>10.1002/etc.3932</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Activated carbon Adsorption Animal tissues Animals Assimilation Assimilation efficiency Bioaccumulation Bioavailability Biological assimilation Biological Availability Black carbon Carbon Charcoal - chemistry Congeners Diet Diet - veterinary Fish Fishes Fundulus heteroclitus Geologic Sediments - chemistry Gills Ingestion Mathematical models Oligochaeta Oligochaeta - chemistry PCB Polychlorinated biphenyls Polychlorinated Biphenyls - analysis Sediments Sorption Water Pollutants, Chemical - analysis |
title | Assimilation efficiency of sediment‐bound PCBs ingested by fish impacted by strong sorption |
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