Multi-residue screening of non-polar hazardous chemicals in green turtle blood from different foraging regions of the Great Barrier Reef
Autor: | María del Mar Gómez Ramos, Christine A. Madden Hof, Marjolijn Kock, Christine Baduel, Soumini Vijayasarathy, Ian Bell, María José Gómez Ramos, Caroline Gaus |
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Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
Environmental Engineering
010504 meteorology & atmospheric sciences Range (biology) Foraging 010501 environmental sciences 01 natural sciences Hazardous Substances law.invention Polychlorinated diphenyl ethers PAHs Great Barrier Reef law Biomonitoring Halogenated Diphenyl Ethers Hydrocarbons Chlorinated Environmental Chemistry Animals Turtle (robot) Pesticides Polycyclic Aromatic Hydrocarbons Waste Management and Disposal Multiresidue 0105 earth and related environmental sciences biology Pesticide Green turtle biology.organism_classification Pollution Polychlorinated Biphenyls Turtles QuEChERS method Seagrass Environmental chemistry Indicator species method Environmental science Queensland Water Pollutants Chemical Environmental Monitoring |
Popis: | Green turtles spend a large part of their lifecycle foraging in nearshore seagrass habitats, which are often in close proximity to sources of anthropogenic contaminants. As most biomonitoring studies focus on a limited number of targeted chemical groups, this study was designed to screen for a wider range of hazardous chemicals that may not have been considered in prior studies. Whole blood of sub-adult green turtles (Chelonia mydas) were sampled from three different locations, a remote, offshore ‘control’ site; and two coastal ‘case’ sites influenced by urban and agricultural activities on the Great Barrier Reef in North Queensland, Australia. In order to screen blood samples for chemicals across a wide range of KOW's, a modified QuEChER's extraction method was used. The samples were analysed using a multi-residue gas chromatography with tandem mass spectrometry system (GC–MS/MS method that allowed simultaneous quantification of polychlorinated biphenyls (PCBs), polychlorinated diphenyl ethers (PBDES), organochlorine pesticides (OCPs) and polycyclic aromatic hydrocarbons (PAHs). While PBDEs, PCBs and OCPS were below the limits of quantification, PAHs were detected in all turtle blood samples. However, PAH levels were relatively low (maximum ΣPAH = 13 ng/mL ww) and comparable to or less than those reported from other green turtles globally. The present study provides the first baseline PAH levels in blood samples from green turtles from nearshore and offshore locations in the Southern Hemisphere. |
Databáze: | OpenAIRE |
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