让生物监测器发挥作用:本地作为固体废物焚烧选工具
Sarah Jovan1, Eleonore Jacobson2, Jason M Unrine3,4
1U.S. Forest Service, Pacific Northwest Research Station, Portland, OR, USA. sarah.jovan@usda.gov.
Environmental monitoring and assessment
|November 7, 2024
概括
这项研究表明,本土可以有效地选固体废物焚烧 (SWI) 的空气污染物. 像和这样的关键元素可以在距离该设施10公里的距离上被追踪.
科学领域:
- 环境科学 环境科学
- 生物监测 生物监测
- 大气化学 大气化学
背景情况:
- 固体废物焚烧会释放空气污染物,但它们的地理分布尚不清楚.
- 和被用于SWI附近的微量元素生物监测,但复杂的排放足迹需要进一步调查.
- 这项研究解决了美国俄勒冈州农村地区老化焚烧炉的社区担忧.
研究的目的:
- 开发本地作为SWI排放的选工具.
- 用生物监测来调查SWI的多元素足迹.
- 为社区关注老化焚烧炉附近的当地空气质量提供信息.
主要方法:
- 采集了36个复合样本的 (Orthotrichum s.l.) 的复合样本. 沿着一个32公里的横断从SWI.
- 利用诱导合等离子体质谱法 (ICP-MS) 分析了40种元素,其中包括14种稀土元素 (REEs).
- 将中的元素特征与SWI排放配置文件进行比较,并使用非参数回归来模拟元素度与距离.
主要成果:
- 摩斯的元素签名表明SWI是通过堆和逃逸尘埃排放的潜在来源.
- 离散较远的元素,如和,与距离有很强的相关性 (xR2=0.65,0.62),沉积主要在5-10公里范围内.
- 在0.2公里范围内发现了土壤/尘埃相关元素 (,) 的局部峰值 (xR2=0.14-0.3).
- ,欧和加多显示出作为SWI新型大气标记物的潜力,加多可能表明医疗废物.
结论:
- 原生是一种可行的选工具,用于评估SWI空气污染.
- 特定元素可以作为SWI排放及其分散模式的有效追踪器.
- 调查结果为关注焚烧炉对当地空气质量影响的利益相关者提供了有价值的数据.
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