Benzotriazole Ultraviolet Absorber Contamination in Breast Milk and the Infant Health Risk

抄録

The contamination levels of benzotriazole ultraviolet absorbers (BUVAs) were determined in breast milk samples from 36 Japanese mothers. BUVAs were detected in all samples in the ranges of 11.0-803 ng/g lipid weight. Especially, 2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl) phenol (UV-320) accounted for 36% of the total. The BUVAs levels were comparable to some previous reports. The total BUVAs levels in this study were higher than those of Vietnam and Korea. A comparison of primiparas and multiparas showed that the mean total BUVAs level in multiparas was 2.1 times higher than that in primiparas. In particular, UV-320 levels were significantly higher in multiparas than in primiparas (p<0.05). Subsequently, the estimated daily intake of infants was calculated to be 76.5-4,410 ng/kg/day. Further studies are needed to help develop regulations for these chemicals in our living environment and prevent harmful exposure.