Assessment of Metal Toxicity in Marine Ecosystems: Comparative Toxicity Potentials for Nine Cationic Metals in Coastal Seawater [component]

MZ (2016) Assessment of metal toxicity in marine 1 ecosystems -Comparative Toxicity Potentials for nine cationic metals in coastal seawater. Environ 2 ABSTRACT: 13 This study is a first attempt to develop globally applicable and spatially differentiated marine 14 Comparative Toxicity Potentials (CTPs) or ecotoxicity characterization factors for metals in coastal 15 seawater for use in Life Cycle Assessment. The toxicity potentials are based exclusively on marine 16 ecotoxicity data and take
more » ... y data and take account of metal speciation and bioavailability. CTPs were developed for 17 nine cationic metals (Cd, Cr(III), Co, Cu(II), Fe(III), Mn, Ni, Pb and Zn) in 64 Large Marine 18 2 Ecosystems (LMEs) covering all coastal waters in the world. The results showed that the CTP of a 19 specific metal varies 3-4 orders of magnitude across LMEs, largely due to different seawater 20 residence time. Therefore the highest toxicity potential for metals was found in the LMEs with the 21 longest seawater residence times. Across metals, the highest CTPs were observed for Cd, Pb and 22 Zn. At the concentration levels occurring in coastal seawaters, Fe acts not as a toxic agent but an 23 essential nutrient and thus has CTPs of zero. 24
doi:10.1021/acs.est.5b01625.s001 fatcat:vivlitk62rcxrptc2ouos6pjua