Comprehensive Risk Assessment of Heavy Metals in Children Toys Based on Chemical Forms and Bioaccessibility

• Project/Area Number: 15K12251
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental risk control and evaluation
• Research Institution: Kyoto University
• Principal Investigator: Fujimori Takashi 京都大学, 地球環境学堂, 助教 (20583248)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 子供用玩具 / 重金属 / バイオアクセシビリティ / リスク評価 / 誤飲 / 東南アジア

Outline of Final Research Achievements

We assessed risk by accidental ingestion of toys including heavy metals by using cheap toys collected from Asian countries. “Two-step methods” were applied by combining total concentration as screening with bioaccessibility test. We found high contamination of lead in metallic jewelries among all categories. Bioaccessibility test simulating stomach and small intestinal phases at least was desirable to assess correctly. In addition, we attempted to assess the influence of change of chemical state of heavy metals by aging test on bioaccessibility and identified next issues.

Research Products

• [Int'l Joint Research] タイ国立開発行政研究院(タイ)
• [Int'l Joint Research] タイ国立開発行政研究院(タイ)
• [Presentation] 子供用玩具に含まれる重金属の誤飲リスク評価 (2016)
  • Author(s): 藤森崇, 松井大, 谷口雅哉, 高岡昌輝, 小栗朋子.
  • Organizer: 第29回日本リスク研究学会年次大会
  • Place of Presentation: ホルトホール大分（大分県、大分市）
  • Year and Date: 2016-11-25
• [Presentation] 子供用玩具中重金属のリスク判別手法の検討 (2016)
  • Author(s): 松井大, 藤森崇, Siwatt Pongpiachan.
  • Organizer: 第29回日本リスク研究学会年次大会
  • Place of Presentation: ホルトホール大分（大分県、大分市）
  • Year and Date: 2016-11-25
• [Presentation] Risk Assessment Based on the Bioaccessibility of Heavy Metals in Cheap Children’s Products via Oral Ingestion: Vietnam and Japan Markets (2016)
  • Author(s): Fujimori, T.; Matsui, D.; Taniguchi, M.; Takaoka, M.; Oguri, T.
  • Organizer: 3R International Scientific Conference on Material Cycles and Waste Management (3RINCs)
  • Place of Presentation: Ha Noi, Vietnam
  • Year and Date: 2016-03-09
  • Int'l Joint Research
• [Presentation] バイオアクセシビリティを用いた子供用玩具中重金属の経口摂取リスク評価 (2015)
  • Author(s): 松井大, 藤森崇, 谷口雅哉, 高岡昌輝, 塩田憲司, 小栗朋子.
  • Organizer: 第26回廃棄物資源循環学会研究発表会
  • Place of Presentation: 九州大学伊都キャンパス（福岡市）
  • Year and Date: 2015-09-02
• [Presentation] Risk Assessment of Heavy Metals in Cheap Children Products via Oral Ingestion Using Bioaccessibility: Vietnam and Japan Markets (2015)
  • Author(s): Fujimori, T.; Matsui, D.; Taniguchi, M.; Takaoka, M.; Oguri, T.
  • Organizer: The 3rd International Symposium on Formulation of the Cooperation Hub for Global Environmental Studies in Indochina Region
  • Place of Presentation: Da Nang, Vietnam
  • Year and Date: 2015-07-27
  • Int'l Joint Research
• [Book] 製品含有化学物質のリスク管理、情報伝達の効率化 (2017)
  • Author(s): 藤森崇 他
  • Total Pages: 654
  • Publisher: 技術情報協会
  • ISBN: 9784861046728