使用分层随机抽样工具在网格过器上计数微粒.
Kayli Paterson1, Michael Silverstan2, Barbara Beckingham1
1Environmental & Sustainability Studies Program, College of Charleston, Charleston, SC, United States.
MethodsX
|August 10, 2023
概括
这项研究引入了一种子采样方法和Excel工具,从环境样本中快速计算大量的微粒,如轮胎道路磨损颗粒 (TRWPs),提高准确性和节省时间.
科学领域:
- 环境科学环境科学
- 分析化学是一种分析化学.
- 生态毒理学 生态毒理学
背景情况:
- 量化微塑料和微粒对于环境监测至关重要.
- 立体显微镜是一种常见但耗时的计数微粒的方法.
- 丰富的微粒,如轮胎道路磨损颗粒 (TRWPs),通常不均地分布在过器上.
研究的目的:
- 开发一种更快,更准确的方法来从环境样本中计算大量的微粒.
- 创建一个子采样策略和一个用户友好的工具,以减少分析时间.
- 为了保持高精度的粒子计数,尽管减少了分析面积.
主要方法:
- 在网格过器上研究了真空涂层TRWP的分布模式.
- 开发了基于观察到的粒子分布的分层随机亚取样方案.
- 创建了一个基于Microsoft Excel Visual Basic的工具,用于自动化子采样和推断.
主要成果:
- 分层随机分样法准确估计了总颗粒数.
- 通过只计算特定的过器子部分,分析时间大大缩短.
- 计算过器分数,精度和节省时间之间的关系被量化.
结论:
- 开发的部分采样策略和工具显著加快了微粒子计数.
- 这种方法提供了一种可靠的方式来量化丰富的微粒,同时保持准确性.
- 开源的Excel工具可以适应各种微粒子分析应用程序.
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