벤조피렌의 급성독성 수준에 따른 관리적 방안 연구 = A Study on the Management of benzo[a]pyrene according to the Level of Acute Toxicity

다국어 초록 (Multilingual Abstract)

Objectives: This study was carried out to determine LD 50
of benzo[a]pyrene to decide the possibility to designate them as toxic substance on the Act on the Registration and Evaluation, etc. of Chemical Substances, and to suggest that they should be managed in what level on the Chemical Control Act.
Methods: Based on the result of a preliminary study, 300 mg/kg was set as the middle dose. A highest dose of 2,000 mg/kg and a lowest dose of 50 mg/kg were selected based on the OECD TG 423. Benzo[a]pyrene was orally administered once to female and male SD rats at dose levels of 50, 300, 2,000 mg/kg (body weight). All animals were monitored daily for clinical signs and mortality over 14 days. Also testicular spermatid count, motility and etc. were examined as well.
Results: Under the condition of this experiment, LD 50 of benzo[a]pyrene was assumed to be >2,000 mg/kg. In the lesion according to autopsy, there were no specific symptoms in the control and experimental groups. At 2,000 mg/kg, a decrease in the sperm motility was observed. Benzo[a]pyrene should be designated to be toxic substance as the material assumed to be reproduction-toxicity on the Act on the Registration and Evaluation, etc.
of Chemicals. Therefore we should abide by legal procedures determined by Chemicals Control Act in treating it.
Conclusion: Considering the significant result that sperm motility in the experimental group was inferior to that in the reference group, we suggest that benzo[a]pyrene be designated as a toxic substance.

목차 (Table of Contents)

• Ⅰ. 서 론
• Ⅱ. 연구대상 및 방법
• Ⅲ. 연구결과
• Ⅳ. 고찰 및 결론

참고문헌 (Reference)

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