Library Open Repository

Quantitative elemental imaging of octopus stylets using PIXE and the nuclear microprobe

Downloads

Downloads per month over past year

Doubleday, ZA and Belton, D and Pecl, GT and Semmens, JM (2007) Quantitative elemental imaging of octopus stylets using PIXE and the nuclear microprobe. Nuclear Instruments and Methods in Physics Research B, 266 (1). pp. 67-72. ISSN 0168-583X

[img] PDF
Quantiiative.pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.

Abstract

By utilising targeted microprobe technology, the analysis of elements incorporated within the hard bio-mineralised structures of
marine organisms has provided unique insights into the population biology of many species. As hard structures grow, elements from
surrounding waters are incorporated effectively providing a natural ‘tag’ that is often unique to the animal’s particular location or
habitat. The spatial distribution of elements within octopus stylets was investigated, using the nuclear microprobe, to assess their potential
for determining dispersal and population structure in octopus populations. Proton Induced X-ray Emission (PIXE) was conducted
using the Dynamic Analysis method and GeoPIXE software package, which produced high resolution, quantitative elemental maps of
whole stylet cross-sections. Ten elements were detected within the stylets which were heterogeneously distributed throughout the microstructure.
Although Ca decreased towards the section edge, this trend was consistent between individuals and remained homogeneous in
the inner region of the stylet, and thus appears a suitable internal standard for future microprobe analyses. Additional analyses used to
investigate the general composition of the stylet structure suggested that they are amorphous and largely organic, however, there was
some evidence of phosphatic mineralisation. In conclusion, this study indicates that stylets are suitable for targeted elemental analysis,
although this is currently limited to the inner hatch region of the microstructure.

Item Type: Article
Journal or Publication Title: Nuclear Instruments and Methods in Physics Research B
Page Range: pp. 67-72
ISSN: 0168-583X
Identification Number - DOI: 10.1016/j.nimb.2007.10.027
Additional Information:

The definitive version is available at http://www.sciencedirect.com

Date Deposited: 21 May 2008 23:36
Last Modified: 18 Nov 2014 03:40
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page