通过单颗粒感应合等离子体质谱法提高河水中微塑料的检测能力
Celia Trujillo1, Josefina Pérez-Arantegui1, Ryszard Lobinski2,3
1Group of Analytical Spectroscopy and Sensors (GEAS), Institute of Environmental Sciences (IUCA), University of Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
Nanomaterials (Basel, Switzerland)
|May 27, 2023
概括
这项研究引入了一种改进的方法,用于检测河流中的微塑料,使用单颗粒感应合等离子体质谱法 (SP-ICP-MS). 该技术有效地识别塑料颗粒,帮助环境监测工作.
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:
- 在环境样本中检测微塑料需要快速,敏感和选择性的分析方法.
- 单颗粒感应合等离子体质谱法 (SP-ICP-MS) 能够检测微塑料的微小小到1微米和100颗/毫升.
- 使用SP-ICP-MS检测碳基微塑料是具有挑战性的,因为其他碳来源的干扰.
研究的目的:
- 开发和验证一种优化的SP-ICP-MS方法,用于检测河水中的微塑料.
- 为了应对环境样本中溶解的碳和微生物所带来的挑战.
- 为了快速选河流微塑料污染.
主要方法:
- 样品经过了24小时的酸性预处理,10%的酸,以减少溶解的碳和消化微生物.
- 用聚烯微粒来评估预处理后的恢复率.
- 使用SP-ICP-MS进行初始检测,并通过拉曼显微镜和电子显微镜 (SEM-EDX) 确认和表征.
主要成果:
- 酸性预处理有效地将溶解的碳降低到超纯的水位和消化的微生物.
- 在预处理后,聚钢微粒的回收率高达80%.
- 在大多数分析的西班牙和法国比利内亚河流的样本中检测到含碳的颗粒,表明微塑料.
结论:
- 开发的SP-ICP-MS方法与酸性预处理相结合,适用于快速选河水中的微塑料.
- 这种方法克服了溶解碳干扰和微生物存在的局限性.
- 该方法促进了有效的初始检测,允许随后通过更有选择性的技术进行分析,例如拉曼显微镜.
相关概念视频
01:19Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview
823
In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then...
823
01:20Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences
530
Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
530
01:19Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
717
Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
717