eprintid: 1398937
rev_number: 27
eprint_status: archive
userid: 608
dir: disk0/01/39/89/37
datestamp: 2013-07-10 11:27:58
lastmod: 2019-10-19 08:25:39
status_changed: 2013-07-10 11:27:58
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Wolthers, MVH
creators_name: de Nooijer, LJ
creators_name: Reichart, GJ
creators_name: Dueñas-Bohórquez, A
creators_name: Ernst, SR
creators_name: Mason, PRD
creators_name: van der Zwaan, GJ
title: Copper incorporation in foraminiferal calcite: results from culturing experiments
ispublished: pub
divisions: A01
divisions: B04
divisions: C06
divisions: F56
keywords: copper, foraminifera, biomineralisation, calcite
note: © Author(s) 2007. This work is licensed under a Creative Commons License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
abstract: A partition coefficient for copper (D_Cu) in foraminiferal calcite has been determined by culturing individuals of two benthic species under controlled laboratory conditions. The partition coefficient of a trace element (TE) is an emperically determined relation between the TE/Ca ratio in seawater and the TE/Ca ratio in foraminiferal calcite and has been established for many divalent cations. Despite its potential to act as a tracer of human-induced, heavy metal pollution, data is not yet available for copper. Since partition coefficients are usually a function of multiple factors (seawater temperature, pH, salinity, metabolic activity of the organism, etc.), we chose to analyze calcite from specimens cultured under controlled laboratory conditions. They were subjected to different concentrations of Cu2+ (0.1–20μmol/l) and constant temperature (10 and 20◦ C), seawater salinity and pH. We monitored the growth of new calcite in specimens of the temperate, shallow-water foraminifer Ammonia tepida and in the tropical, symbiont-bearing Heterostegina depressa. Newly formed chambers were analyzed for Cu/Ca ratios by laser ablation-ICP-MS. The estimated partition coefficient (0.1–0.4) was constant to within experimental error over a large range of (Cu/Ca) seawater ratios and was remarkably similar for both species. Neither did the presence or absence of symbionts affect the D_Cu , nor did we find a significant effect of temperature or salinity on Cu-uptake.
date: 2007
publisher: European Geosciences Union
official_url: http://dx.doi.org/10.5194/bg-4-493-2007
vfaculties: VMPS
oa_status: green
language: eng
primo: open
primo_central: open_green
article_type_text: Article
verified: verified_manual
elements_source: Manually entered
elements_id: 883676
doi: 10.5194/bg-4-493-2007
lyricists_name: Wolthers, Mariette
lyricists_id: MWOLT33
full_text_status: public
publication: Biogeosciences
volume: 4
pagerange: 493 - 504
pages: 12
issn: 1726-4170
citation:        Wolthers, MVH;    de Nooijer, LJ;    Reichart, GJ;    Dueñas-Bohórquez, A;    Ernst, SR;    Mason, PRD;    van der Zwaan, GJ;      (2007)    Copper incorporation in foraminiferal calcite: results from culturing experiments.                   Biogeosciences , 4    493 - 504.    10.5194/bg-4-493-2007 <https://doi.org/10.5194/bg-4-493-2007>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1398937/1/bg-4-493-2007.pdf