一种通用方法,以防止自由放牧牲畜中土壤产生的遗留POPs污染食品
Farida Amutova1,2,3, Matthieu Delannoy1, Araylym Akhatzhanova2,3
1URAFPA, University de Lorraine-INRAE, 54000, Nancy, France.
Heliyon
|April 9, 2024
概括
土壤摄入是牲畜暴露于持久性有机污染物 (POPs) 的主要途径,特别是自由放牧的动物. 本研究评估了土壤中可容忍的POP度,以确保食品安全和保护动物健康.
科学领域:
- 环境化学环境化学
- 毒理学 毒理学 毒理学
- 动物科学动物科学
背景情况:
- 目前的法规重点关注动物料和产品中的POPs,经常忽视土壤污染.
- 由于其持久性,持久性有机污染物 (POP) 在土壤中积累的度高于其他环境矩阵.
- 土壤受到POP污染对食品安全,动物健康和农业系统的经济稳定构成重大风险.
研究的目的:
- 开发和验证一种方法来确定各种牲畜在土壤中可容忍的POP度.
- 通过评估各种农业系统中POP转移风险,确保动物来源食品的安全.
- 为商业农场和私人养殖场提供一个风险评估和减轻策略的工具.
主要方法:
- 审查现有关于通过土壤暴露在牲畜中的POP转移的知识.
- 通过从已确定的最大残留量 (MRL) 进行逆向计算,建模可容忍的POP摄入量.
- 根据动物生产率和特定的POPs (如PCDD/Fs,林丹和DDT) 来评估风险.
主要成果:
- 土壤摄入被确定为牲畜的主要污染途径,特别是在自由放牧系统中.
- 低生产率的动物,如奶牛和母,对土壤中POP吸收的敏感性更高.
- 低产量奶牛 (1.5对于PCDD/Fs) 和产母 (3对于PCDD/Fs,2对于林丹,1对于DDT) 观察到低安全比率.
结论:
- 开发的方法有效地评估了畜牧业土壤中可容忍的POP度.
- 土壤暴露是对畜牧业POP风险评估的关键因素,需要有针对性的缓解.
- 该方法可以适应新出现的POP,并帮助食品生产商了解化学污染风险.
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