Concentration of organic sun-blocking agents in seawater of beaches and coral reefs of Okinawa Island, Japan
2013
Tashiro, Yutaka | Kameda, Yutaka
The concentration of UV filters (UVFs) and UV light stabilizers (UVLSs) were measured in seawater and river water collected from sites at four beaches, two reefs, and one river on Okinawa Island, Japan. UVFs and/or UVLSs of 8–10 types were detected in beaches samples and 6–9 types were detected in reef samples. The total UVF concentrations at the beach sites were highest either in July or August with a maximum of 1.4μgL−1. The concentrations at the reef sites did not show peaks in summer and the maximum values were close to 10ngL−1. The detected UVF profiles reflected the ingredients of sunscreens used in each region. The highest UVLS concentrations at the reefs were observed not only in summer but also in June and September. The UVLS concentrations at the reefs were similar to or even higher than that at the beaches or in the river.
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