An assessment of classical and emerging trace element contamination was conducted on gonads of the sea urchin Paracentrotus lividus (Lamarck, 1819), in Corsica (Western Mediterranean). The aim of this study was to evaluate the contamination levels at different sites by following the seasonal variation of 22 trace elements. The sea urchins analyzed were taken in 2017 from reference and more impacted sites in four Corsican areas. The results obtained shown the importance of biotic factors such as gender, reproduction and the way of life. Variations have been highlighted with lower trace element concentrations during the summer season. This is mainly due to a dilution phenomenon resulting from gametogenesis. The pollution index (TEPI) was determined and highlighted differences in contamination levels at the various sites. This work could provide additional support for other tools for the diagnosis and monitoring of coastal water quality. It provides useful new data to enable managers to act at the source and reduce degradation in order to improve the ecological quality of marine waters.

对海胆Paracentrotus lividus的性腺进行了经典和新兴微量元素污染的评估（拉马克，1819年），位于科西嘉岛（西地中海）。这项研究的目的是通过跟踪22种微量元素的季节性变化来评估不同地点的污染水平。分析的海胆取材于2017年，来自科西嘉岛四个地区的参考地和受影响较大的地区。获得的结果表明了诸如性别，生殖力和生活方式等生物因素的重要性。在夏季，微量元素浓度较低，这突出了变化。这主要是由于配子发生引起的稀释现象。确定了污染指数（TEPI），并突出显示了各个地点的污染水平差异。这项工作可以为诊断和监测沿海水质的其他工具提供额外的支持。