西班牙瓶装饮用水中的微塑料和非天然纤维素颗粒
Virginia Gálvez-Blanca1, Carlos Edo1, Miguel González-Pleiter2
1Department of Chemical Engineering, Universidad de Alcalá, 28871, Alcalá de Henares, Madrid, Spain.
Scientific reports
|May 15, 2024
概括
在瓶装水中发现了微塑料 (MP) 和人工纤维素颗粒 (ACP). 虽然度表明健康风险微不足道,但瓶装水含有比自来水更多的塑料,有利于市政来源.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 食品安全 食品安全
背景情况:
- 微塑料 (MP) 和人工纤维素颗粒 (ACP) 的污染在食品和饮料中越来越令人担忧.
- 聚乙烯 (PET) 瓶被广泛用于商业水包装.
- 了解瓶装水中的颗粒物存在对于评估人类暴露和环境影响至关重要.
研究的目的:
- 在商用瓶装水中量化微塑料 (MP) 和人工纤维素颗粒 (ACP).
- 描述这些粒子的类型,大小和质量度.
- 估计每天从瓶装水消费中人类摄入的国会议员,并将其与自来水进行比较.
主要方法:
- 来自西班牙市场的五个最销的瓶装水品牌 (1.5 L PET 瓶) 的分析.
- 用重力测量测定MP和ACP质量度.
- 颗粒大小分析和材料 (聚,聚乙烯,纤维素) 的表征.
主要成果:
- 确定了MP的质量度为1.61μg/L,ACP的质量度为1.04μg/L.
- MPs主要是聚和聚乙烯;ACP是纤维素纤维,可能来自织品.
- 国会议员的中位粒子大小为93微米,而非洲和非洲的中位粒子大小为77微米.
- 估计每日MP摄入量为4-18 ng kg-1天-1,被认为是可以忽略不计的健康风险.
结论:
- 与自来水相比,瓶装水含有MP和ACP的度明显高.
- 瓶装水的消费可能会对人类健康造成忽略不计的风险,因为MP暴露.
- 研究结果支持,由于塑料污染较低,市政饮用水比瓶装水更受青.
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