LC/MS によるプラスチック製の乳幼児用品・玩具から溶出する化学物質に関する研究

抄録

Brominated flame retardants (BFRs) leaching in water (for 24hours), amylase aqueous solution (for 24hours) and ethanol (for 10) minutes from 18 kinds of babies′ toys were determined by LC/MS, and the some other chemicals were identified by LC/ToFMS. The aim of the study is to determine or identify chemicals leaching from baby toys with a method roughly simulating baby′s behavior of licking, sucking or biting. Bisphenol A leaching in water and ethanol were 3∼430ng/item and 1.3∼92ng/item, respectively. Tribromophenol leaching in water, amylase aqueous solution and ethanol were 13∼220ng/item, 0.5∼200ng/item and 0.1∼0.2ng/item, respectively. Tetrabromobisphenol A leaching in water, amylase aqueous solution and ethanol were 5.0∼590ng/item, 0.4∼6.9ng/item and 2.3∼4.4ng/item, respectively. Hexabromocyclododecane diastereoisomers were not found in water in the limit of detection of 1ng/item, however those in amylase aqueous solution and ethanol were 3.0∼18ng/item and 0.6∼25ng/item, respectively. Chemicals identified in the leachates by LC/ToFMS were a nucleating agent, a light stabilizer, an intermediate in organic syntheses which were plastic synthesizers for food package, plastic lens, liquid crystal and other plastic items, and lubricants. It is suggested that most of plastic baby toys would be contaminated with BFRs and various chemical additives not used for baby toys.