title: HPLC Analysis of Colorants Migrated from Children's Modeling Clays.
abstract: A method using high-performance liquid chromatograph (HPLC) was developed for the identification of colorants migrated from colored modeling clays, which are popular toys for children. Twelve permitted dyes and 25 non-permitted dyes were analyzed in 20 clays (10 wheat clays, 2 rice clays, 2 corn clays, 3 paper clays and 3 resin clays). As a result, 13 products which were labeled for children's use (under 6 years old) met the specifications of the Japanese Food Sanitation Law, while non-permitted colorants were eluted from 2 products. In additon, unknown colorants were eluted from 3 products for people over 6 years old, although these are not covered by the Japanese regulation. It was suggested that some type of clays contained pigments, which are generally used in printing ink and plastics.
authors: Osaka City Institute of Public Health and Environmental Sciences.
authors: Eri
authors: E
authors: Kishi
authors: Asako
authors: A
authors: Ozaki
authors: Tomoko
authors: T
authors: Ooshima
authors: Tetsuo
authors: T
authors: Yamano
mesh_terms: D000538:Aluminum Silicates / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D000077215:Clay; D004396:Coloring Agents / Q000032:analysis*; D059022:Food Safety; D006801:Humans; D007564:Japan; D007881:Legislation, Food / Q000592:standards; D012275:Oryza / Q000737:chemistry; D010988:Play and Playthings; D014908:Triticum / Q000737:chemistry; D003313:Zea mays / Q000737:chemistry
chemical_list: D000538:Aluminum Silicates; D004396:Coloring Agents; D000077215:Clay