Characterization of Halogenated Organic Compounds in Pelagic Sharks and Sea Turtles Using a Nontargeted Approach,Environmental Science & Technology

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Characterization of Halogenated Organic Compounds in Pelagic Sharks and Sea Turtles Using a Nontargeted Approach
Environmental Science & Technology ( IF 11.4 ) Pub Date : 2021-11-30 , DOI: 10.1021/acs.est.1c03798
Aikebaier Renaguli ₁ , Sujan Fernando ₂ , Thomas M Holsen _{2,

3} , Philip K Hopke ₂ , Douglas H Adams ₄ , George H Balazs ₅ , T Todd Jones ₅ , Thierry M Work ₆ , Jennifer M Lynch _{7,

8} , Bernard S Crimmins _{3,

9}

Affiliation

Institute for a Sustainable Environment, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699, United States.
Center for Air and Aquatic Resources Engineering and Science, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699, United States.
Department of Civil and Environmental Engineering, Clarkson University, 8 Clarkson Avenue, Potsdam, New York 13699, United States.
Cape Canaveral Scientific Inc., 220 Surf Road, Melbourne Beach, Florida 32951, United States.
Golden Honu Services of Oceania, Honolulu, Hawaii 96825 United States.
U.S. Geological Survey, National Wildlife Health Center, Honolulu Field Station, Honolulu, Hawaii 96818, United States.
National Institute of Standards and Technology, Chemical Sciences Division, 41-202 Kalaniana'ole Highway Ste #9, Waima̅nalo, Hawai'i 96795, United States.
Center for Marine Debris Research, Hawai'i Pacific University, 41-202 Kalaniana'ole Highway Ste #9, Waima̅nalo, Hawai'i 96795, United States.
AEACS, LLC, New Kensington, Pennsylvania 15068, United States.

Halogenated organic compounds (HOCs) in marine species collected from the Atlantic Ocean [3 shortfin mako (Isurus oxyrinchus) and 1 porbeagle (Lamna nasus)], and 12 sea turtles collected from the Pacific Ocean [3 loggerhead (Caretta caretta), 3 green (Chelonia mydas), 3 olive ridley (Lepidochelys olivacea), and 3 hawksbill (Eretmochelys imbricata)] were analyzed with a nontargeted analytical method using two-dimensional gas chromatography coupled to high-resolution time-of-flight mass spectrometry. Sharks and sea turtles had distinct HOC profiles. Halogenated methoxyphenols (halo-MeOPs) were the most abundant compound class identified in sea turtle livers, while polychlorinated biphenyls (PCBs) were the most abundant in shark livers. In addition to legacy contaminants and halo-MeOPs, a total of 110 nontargeted/novel HOCs (NHOCs) were observed in the shark livers. Shortfin mako collected from the northern Gulf of Mexico contained the largest number (89) and most diverse structural classes of NHOCs. Among all NHOCs, a group of compounds with the elemental composition C₁₄H_12–nCl_n (n = 5–8) exhibited the highest concentrations, followed by chlorocarbazoles and tris(chlorophenyl) methanes (TCPMs). Using nontargeted workflows, a variety of known and unknown HOCs were observed, which demonstrate the need to develop more complete chemical profiles in the marine environment.

更新日期：2021-12-21

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