PMID- 31887478 OWN - NLM STAT- MEDLINE DCOM- 20200903 LR - 20200903 IS - 1873-6750 (Electronic) IS - 0160-4120 (Linking) VI - 135 DP - 2020 Feb TI - Variability of trophic magnification factors as an effect of estimated trophic position: Application of compound-specific nitrogen isotope analysis of amino acids. PG - 105361 LID - S0160-4120(19)32824-7 [pii] LID - 10.1016/j.envint.2019.105361 [doi] AB - The trophic magnification of persistent organic pollutants (POPs), which is the relationship between POP concentration and the trophic position (TPs) of an organism, is considered an important factor for prioritizing chemicals of concern in the environment. Organismal TPs are typically based on nitrogen isotope ratios of bulk tissue (delta(15)N(bulk)). In this study, nitrogen isotope ratios of amino acids (delta(15)N(AAs)), a more precise approach for TP estimation (TP(AAs)), was applied and compared with estimations of TP based on delta(15)N(bulk) (TP(bulk)) in marine organisms living in Masan Bay, South Korea. Compound-specific isotope analysis of the amino acids (CSIA-AAs) in fish samples allows us to calculate robust TPs by correcting the variation in baseline isotope values with use of the delta(15)N(bulk) technique. In a benthic food chain, this approach reveals more significant magnification trends for POPs [polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and organochlorine pesticides (OCPs)] than those revealed by analysis of the relationship between TP(bulk) and POPs. The trophic magnification factors (TMF) associated with TP(AAs) were significant for some POPs, especially pp'-DDD and chlordane. The results presented in this study suggest that TP calculations based on delta(15)N(AAs) are an effective tool for characterizing trophic magnification trends related to the fates of various pollutants. CI - Copyright (c) 2019 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Won, Eun-Ji AU - Won EJ AD - Department of Marine Science & Convergence Engineering, Hanyang University, Ansan 15588, Republic of Korea; Institute of Marine & Atmospheric Sciences, Hanyang University, Ansan 15588, Republic of Korea. FAU - Choi, Bohyung AU - Choi B AD - Department of Marine Science & Convergence Engineering, Hanyang University, Ansan 15588, Republic of Korea; Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan. FAU - Lee, Chang Hwa AU - Lee CH AD - Department of Marine Science & Convergence Engineering, Hanyang University, Ansan 15588, Republic of Korea. FAU - Hong, Seongjin AU - Hong S AD - Department of Ocean Environmental Sciences, Chungnam National University, Daejeon 34134, Republic of Korea. FAU - Lee, Jong-Hyeon AU - Lee JH AD - Environmental Human Research & Consulting (EH R&C), Incheon 22689, Republic of Korea. FAU - Shin, Kyung-Hoon AU - Shin KH AD - Department of Marine Science & Convergence Engineering, Hanyang University, Ansan 15588, Republic of Korea; Institute of Marine & Atmospheric Sciences, Hanyang University, Ansan 15588, Republic of Korea. Electronic address: shinkh@hanyang.ac.kr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191227 PL - Netherlands TA - Environ Int JT - Environment international JID - 7807270 RN - 0 (Amino Acids) RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Nitrogen Isotopes) RN - 0 (Water Pollutants, Chemical) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Amino Acids MH - Animals MH - Environmental Monitoring MH - Fishes MH - Food Chain MH - Halogenated Diphenyl Ethers MH - Nitrogen Isotopes/*chemistry MH - Polychlorinated Biphenyls MH - Republic of Korea MH - Water Pollutants, Chemical OTO - NOTNLM OT - Compound-specific isotope analysis (CSIA) OT - Food web OT - Trophic magnification factor (TMF) OT - Trophic position EDAT- 2019/12/31 06:00 MHDA- 2020/09/04 06:00 CRDT- 2019/12/31 06:00 PHST- 2019/08/06 00:00 [received] PHST- 2019/11/21 00:00 [revised] PHST- 2019/11/22 00:00 [accepted] PHST- 2019/12/31 06:00 [pubmed] PHST- 2020/09/04 06:00 [medline] PHST- 2019/12/31 06:00 [entrez] AID - S0160-4120(19)32824-7 [pii] AID - 10.1016/j.envint.2019.105361 [doi] PST - ppublish SO - Environ Int. 2020 Feb;135:105361. doi: 10.1016/j.envint.2019.105361. Epub 2019 Dec 27.