title: Occurrence and profiles of organic sun-blocking agents in surface waters and sediments in Japanese rivers and lakes.
abstract: Sun-blocking agents including eight UV filters (UVF) and 10 UV light stabilizers (UVLS) were measured in water and sediment collected from 22 rivers, four sewage treatment plant effluents (STPE) and three lakes in Japan. Total sun blocking agents levels ranged from N.D. to 4928 ng/L and from 2.0 to 3422 μg/kg dry wt in surface water and in sediment, respectively. Benzyl salicylate, benzophenone-3, 2-ethyl hexyl-4-methoxycinnamte (EHMC) and octyl salicylate were dominant in surface water receiving wastewater effluents and STPE, although UV-328, benzophenone and EHMC were dominant in other surface water except background sites. Three UVF and nine UVLS were observed from all sediment and their compositions showed similar patterns with UV-328 and UV-234 as the most prevalent compounds. Homosalate, octocrylene, UV-326, UV-327, UV-328 and UV-234 were significantly correlated with Galaxolide® in sediments. Concentrations of UV-327 and UV-328 also had strong correlation between those of UV-326 in sediment.
authors.affiliation: Center for Environmental Science in Saitama, Kazo 347-0115, Japan. kameda.yutaka@pref.saitama.lg.jp
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Kameda
authors.forename: Kumiko
authors.initials: K
authors.lastname: Kimura
authors.forename: Motonobu
authors.initials: M
authors.lastname: Miyazaki
mesh_terms: D004784:Environmental Monitoring; D005618:Fresh Water / Q000737:chemistry*; D019015:Geologic Sediments / Q000737:chemistry*; D007564:Japan; D013473:Sunscreening Agents / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D013473:Sunscreening Agents; D014874:Water Pollutants, Chemical