Accumulation of Toxic Metals (Pb and Cd) in the Sea Urchin Diadema aff. antillarum Philippi, 1845, in an Oceanic Island (Tenerife, Canary Islands)

作者：Dolores Hernandez Ofelia; Jose Gutierrez Angel; Gonzalez Weller Dailos^*; Lozano Gonzalo; Garcia Melon Enrique; Rubio Carmen; Hardisson Arturo

来源：Environmental Toxicology, 2010, 25(3): 227-233.

DOI：10.1002/tox.20487

• sea urchins
• Canary Islands
• lead and cadmium
• graphite furnace atomic absorption spectrophotometry
• accumulation
• environmental bioindicator

This document shows the results obtained from a study on the concentration of toxic heavy metals in the internal tissue and exoskeleton of sea urchins, collected from their natural habitat. The levels of lead and cadmium were measured by Graphite Furnace Atomic Absorption Spectrometry. The mean concentrations of lead and cadmium in the internal tissue were 304.04 and 260.54 mu g/kg respectively, whereas in the shell they were 185.02 and 142.48 mu g/kg. We also performed a statistical analysis of the differences in the distribution of metals between their exoskeleton and their internal content, a correlation study of the metal content in internal tissue and shell and sampling areas, and a correlation study between the metal content and sample size. Since the sea urchin Diadema antillarum presents a wide range of variation in metal content, this study suggests that this species is an excellent bioindicator of heavy metal contamination.

• 出版日期2010-6