在商业海盐中检测到纳米塑料
Xuejun Ruan1, Jianpeng Ao2, Minglu Ma1
1Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, IRDR International Center of Excellence on Risk Interconnectivity and Governance on Weather, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, Peoples' Republic of China.
Environmental science & technology
|May 6, 2024
概括
塑料纳米颗粒 (NP) 污染了食盐,对环境构成威胁. 一种新的方法检测和量化盐中的这些纳米塑料,揭示了每年摄入的数百万个纳米塑料,突出了潜在的健康风险.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 塑料纳米颗粒 (NP) 是一个新兴的环境污染物.
- 在各种消费品中检测到NP,包括食盐.
- 盐中NP污染的程度及其影响尚未完全理解.
研究的目的:
- 开发一种检测和量化商业盐中纳米塑料的方法.
- 评估来自全球不同地区的海盐中纳米塑料的普遍性.
- 通过海盐消费估计人类每年摄入的纳米塑料.
主要方法:
- 开发了一种联合的表面增强拉曼散射 (SERS) 和刺激拉曼散射 (SRS) 方法.
- 装有金纳米颗粒的氧化阳极基板被用于SERS.
- 使用SRS显微镜对NP进行成像和量化,基于碳化合物组的识别.
主要成果:
- 通过SERS-SRS方法在商业海盐中成功识别和量化纳米塑料.
- 在亚洲,澳大利亚,欧洲和大西洋的海盐中发现了纳米塑料污染.
- 估计每年通过海盐消费摄入纳米塑料的数量高达每人600万颗颗粒.
结论:
- 开发的SERS-SRS技术对于在盐中检测和量化NP是有效的.
- 海盐是人类摄入纳米塑料的重要来源.
- 与纳米塑料摄入相关的潜在健康风险需要进一步调查.
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