This study uses an annually banded coral, which constructs skeletons composed of CaCO3, and has been suggested to be useful for reconstructing marine environments including those affected by marine pollution. However, a coral reference material, which is essential for comparison of analytical data, has not been provided until now. Recently, Geological Survey of Japan (GSJ) prepared carbonate reference materials coral JCp-1 in addition to giant clam JCt-1 and provisional data of minor and trace elements on both materials were presented in this study. Then, seven trace elements (V, Mn, Cu, Sn, Ba, Pb and U) were determined in coral samples (Porites spp.) collected from several sites in the western Pacific and the Jakarta Bay. Each elemental content varied among the samples collected from different sea areas, suggesting that these elements in a coral skeleton could represent characteristics of the local marine environment. Temporal variation of Sn and Cu in a coral core from Ponpei Island, Micronesia, reflected historical change of use of antifouling paint containing TBT. Additionally, based on a stepwise pretreatment experiment, Sn and Cu outside the aragonite lattice of the coral skeleton showed potential as proxies for marine pollution. Furthermore, Pb contents in a coral core collected from Ogasawara Islands, Japan, have gradually increased during last 108 years, probably reflecting emissions of anthropogenic Pb mainly from Asian countries.
|Title of host publication||Coral Reefs: Biology, Threats and Restoration|
|Publisher||Nova Science Publishers, Inc.|
|Number of pages||26|
|Publication status||Published - Feb 2011|
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)