The incorporation rate of Zn into the calcareous tests of Pseudotriloculina rotunda was investigated in culture in order to evaluate the possibility of using Zn/Ca ratios as a pollution proxy. Foraminifera were incubated at zinc concentrations up to 10-fold higher than unpolluted seawater (sea + 10 mg Zn/L) during 70 days. New calcite was investigated under the Environmental Scanning Electron Microscope (ESEM), for potential alteration of test structure. Laser ablation-Inductively Coupled Plasma-Mass spectrometry (LA-ICP-MS) was used to quantify Zn contents. The analyses revealed that test structure is not visibly altered by the presence of zinc. However, significant Zn incorporation is detected by the LA-ICP-MS. The zinc partition coefficient, DZn, decreases at increasing Zn concentrations (from 4.03 ± 0.06 to 0.2 ± 0.01) and the zinc is incorporated into the calcite not necessarily linearly.
Zinc incorporation in the miliolid foraminifer Pseudotriloculina rotunda under laboratory conditions / Nardelli, M. P.; Malferrari, Daniele; Ferretti, Annalisa; Bartolini, A.; Sabbatini, A.; Negri, A.. - In: MARINE MICROPALEONTOLOGY. - ISSN 0377-8398. - STAMPA. - 126(2016), pp. 42-49.
Data di pubblicazione: | 2016 |
Titolo: | Zinc incorporation in the miliolid foraminifer Pseudotriloculina rotunda under laboratory conditions |
Autore/i: | Nardelli, M. P.; Malferrari, Daniele; Ferretti, Annalisa; Bartolini, A.; Sabbatini, A.; Negri, A. |
Autore/i UNIMORE: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.marmicro.2016.06.001 |
Rivista: | |
Volume: | 126 |
Pagina iniziale: | 42 |
Pagina finale: | 49 |
Codice identificativo ISI: | WOS:000381324100004 |
Codice identificativo Scopus: | 2-s2.0-84973391992 |
Citazione: | Zinc incorporation in the miliolid foraminifer Pseudotriloculina rotunda under laboratory conditions / Nardelli, M. P.; Malferrari, Daniele; Ferretti, Annalisa; Bartolini, A.; Sabbatini, A.; Negri, A.. - In: MARINE MICROPALEONTOLOGY. - ISSN 0377-8398. - STAMPA. - 126(2016), pp. 42-49. |
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