Issue 4, 2003
From the journal:

Dalton Transactions

Structural characterisation of X-ray amorphous calcium carbonate (ACC) in sternal deposits of the crustacea Porcellio scaber

Alexander Becker,a   Ulrich Bismayer,b   Matthias Epple,*a   Helge Fabritius,c   Bernd Hasse,a   Jianmin Shib  and  Andreas Ziegler*c  

* Corresponding authors

a Solid State Chemistry, Faculty of Chemistry, University of Bochum, D-44780 Bochum, Germany
E-mail: matthias.epple@ruhr-uni-bochum.de

b Institute for Mineralogy and Petrography, University of Hamburg, Grindelallee 48, D-20146 Hamburg, Germany

c Central Facility for Electron Microscopy, University of Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany
E-mail: andreas.ziegler@medizin.uni-ulm.de

Abstract

Mineral deposits in land-based woodlice (crustacea, Porcellio scaber) were analysed by high-resolution X-ray diffraction, X-ray absorption spectroscopy (EXAFS) and infrared microscopy. Calcium carbonate is stored within the first four anterior sternites before changing the cuticle (shell). These deposits consist of fully X-ray amorphous calcium carbonate (primary particle size less than 100 Å). The short-range order is comparable to crystalline calcium carbonate phases (first coordination shell), but there is increasing structural disorder beyond about 3 Å. This high degree of structural disorder gives a high solubility, i.e. an easy mobilisation within the biological system. The results are compared with EXAFS data from the literature on other biogenic amorphous calcium carbonates.

Graphical abstract: Structural characterisation of X-ray amorphous calcium carbonate (ACC) in sternal deposits of the crustacea Porcellio scaber

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Article information

DOI
https://doi.org/10.1039/B210529B
Article type
Paper
Submitted
25 Oct 2002
Accepted
02 Jan 2003
First published
23 Jan 2003

Dalton Trans., 2003, 551-555

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Structural characterisation of X-ray amorphous calcium carbonate (ACC) in sternal deposits of the crustacea Porcellio scaber

A. Becker, U. Bismayer, M. Epple, H. Fabritius, B. Hasse, J. Shi and A. Ziegler, Dalton Trans., 2003, 551 DOI: 10.1039/B210529B

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