The present study applied multi-element profiling analysis to the monitoring of coastal seawater around coral reefs to elucidate the elemental characteristics and the biogeochemical cycles. In temporal concentration variation, the long-term monitoring (monthly over one year) and short-term monitoring (3-hourly over two days) were subjected to multi-element determination by ICP-MS with solid phase extraction using chelating resin. In the long-term monitoring, the nutrient-type elements Fe, Ni, Cu, Zn, and Cd and the scavenging-type elements Mn, Co, and Pb showed wide variations in their total, dissolved, and acid-soluble concentrations. The elevated total concentrations of Mn, Fe, Ni, Cu, Zn, Cd, and Pb in short-term variation of October 2011 were possibly caused by mucus secreted from coral. The increased concentrations of trace metals in the coastal seawater around the reefs might play important role to provide bio-essential trace metals to zooxanthellae living in symbiotic animals, such as corals, anemones, and giant clams.

本研究应用多元素分析法对珊瑚礁周围的沿海海水进行监测，以阐明其元素特征和生物地球化学循环。在时间浓度变化中，通过ICP-MS进行长期监测（一年中每月一次）和短期监测（两天中每天三小时），并使用螯合树脂通过固相萃取进行多元素测定。在长期监测中，营养型元素Fe，Ni，Cu，Zn和Cd和清除型元素Mn，Co和Pb的总，溶解和酸溶性浓度变化很大。在2011年10月的短期变化中，Mn，Fe，Ni，Cu，Zn，Cd和Pb的总浓度升高可能是由珊瑚分泌的粘液引起的。