基于动态图像分析和spICP-MS的多方法平台,用于基于数量的微塑料量化
Aneta Sikora1, David Ojeda1, Dorota Bartczak1
1National Measurement Laboratory, LGC Limited, The Priestley Centre, 10 Priestley Road, Guildford, Surrey GU2 7XY, United Kingdom.
Analytical chemistry
|November 18, 2025
概括
一个新的多方法平台结合动态图像分析 (DIA) 和单颗粒感应合等离子体质谱 (spICP-MS) 可靠量化小微塑料. 这种经过验证的方法可以准确地确定微塑料分析的粒子数度.
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:
- 微塑料污染是一个日益严重的环境问题.
- 精确量化小微塑料 (1-10微米) 是一个挑战.
- 现有的方法往往缺乏用于可靠的颗粒数度确定所需的精度.
研究的目的:
- 为可靠的微塑料颗粒数度测量开发和验证一个多方法平台.
- 评估动态图像分析 (DIA) 和单颗粒感应合等离子体质谱法 (spICP-MS) 的性能,以量化微塑料.
- 确定影响测量准确度和不确定性的关键参数.
主要方法:
- 组合动态图像分析 (DIA) 和单颗粒感应合等离子体质谱法 (spICP-MS).
- 使用聚钢 (PS) 微粒 (1-10微米) 验证了平台.
- 研究了影响精度的仪器参数,包括检测值 (DIA) 和运输效率校准 (spICP-MS).
主要成果:
- 该DIA/spICP-MS平台可靠地检测和量化了微塑料.
- 在最佳条件下,可比数量度值为5微米PS-Latex微球.
- 在最佳条件下,测量不确定性约为2.5% (DIA) 和10.2% (spICP-MS).
- 确定了关键的不确定性贡献者:粒子检测变量 (DIA) 和运输效率校准 (spICP-MS).
结论:
- 开发的DIA/spICP-MS平台提供了一种可靠的方法来确定小微塑料颗粒数量度.
- 仪器参数优化对于准确的微塑料量化至关重要.
- 了解不确定性贡献对于强大的微塑料分析至关重要.
相关概念视频
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