将化学混合物的终身暴露维度纳入风险评估过程. 对微量元素的应用
Thomas Gastellu1, Bruno Le Bizec2, Gilles Rivière3
1Oniris, INRAE, LABERCA, Nantes, 44300, France; Risk Assessment Department - French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Maisons-Alfort, 94700, France.
概括
这项研究引入了一种新方法,用于估计一生内在暴露于化学混合物,如 (As), (Cd), (Pb) 和 (Hg). 它评估了这些微量元素对脏影响的综合风险.
科学领域:
- 环境健康 环境健康
- 毒理学 毒理学 毒理学
- 生物监测 生物监测
背景情况:
- 一般人群接触化学混合物的情况很常见.
- 目前的风险评估往往集中在单一的化学品和途径上,限制了准确性.
- 人类生物监测提供了内部暴露数据,但在源标识和有限的化学分析方面存在困难.
研究的目的:
- 开发一种方法来估计一生内在暴露于微量元素 (As,Cd,Pb,Hg) 混合物的方法.
- 通过将模拟生物标志物与人类生物监测数据进行比较来验证方法.
- 描述这些化学物质暴露造成的影响的综合风险.
主要方法:
- 开发了一种方法,将终身暴露轨迹与基于生理学的运动建模相结合.
- 将多个暴露源纳入模型.
- 使用现有的人类生物监测数据验证了模型.
- 执行了假设化学品的添加效应的风险表征.
主要成果:
- 成功估计了对无机As,Cd,Pb和Hg混合物的终身内部暴露.
- 通过与生物监测数据进行比较,证明了方法的稳定性.
- 量化了个别微量元素对脏影响总体风险的贡献.
结论:
- 开发的方法提供了一种更全面的方法来评估人口对化学混合物的暴露.
- 这种方法提高了对不良健康结果,特别是脏影响的风险评估的准确性.
- 它可以更好地了解整个生命中微量元素暴露的累积影响.
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