Trace Element, Spectroscopy and Speciation Group (GETEE), Institute of Materials iMATUS, Department of Analytical Chemistry, Nutrition and Bromatology. Faculty of Chemistry, Universidade de Santiago de Compostela, Avenida das Ciencias, s/n, 15782, Santiago de Compostela, Spain.
Trace Element, Spectroscopy and Speciation Group (GETEE), Institute of Materials iMATUS, Department of Analytical Chemistry, Nutrition and Bromatology. Faculty of Chemistry, Universidade de Santiago de Compostela, Avenida das Ciencias, s/n, 15782, Santiago de Compostela, Spain.
Talanta. 2022 May 15;242:123286. doi: 10.1016/j.talanta.2022.123286. Epub 2022 Feb 4.
Intensive production of nanomaterials, especially metallic nanoparticles (MNPs), and their release into the environment pose several risks for humans and ecosystem health. Consequently, high-efficiency analytical methodologies are required for control and characterization of these emerging pollutants. Single-particle inductively coupled plasma - mass spectrometry (SP-ICP-MS) is a promising technique which allows the determination and characterization of MNPs. However, several elements or isotopes are hampered by spectral interferences, and dynamic-reaction cell (DRC) technology is becoming a useful tool for free interference determination by ICP-MS. DRC-based SP-ICP-MS methods using ammonia as a reaction gas (either on-mass approach or mass-shift approaches) have been developed for determining titanium dioxide nanoparticles (TiO NPs), copper oxide nanoparticles (CuO NPs), copper nanoparticles (Cu NPs), and zinc oxide nanoparticles (ZnO NPs). The effects of parameters such as ammonia flow rate and dwell time on the peak width (NP transient signal in SP-ICP-MS) were comprehensively studied. Influence of NP size and nature were also investigated.
纳米材料，尤其是金属纳米粒子（MNPs）的密集生产及其向环境中的释放对人类和生态系统健康构成了若干风险。因此，需要高效的分析方法来控制和表征这些新兴污染物。单颗粒电感耦合等离子体质谱（SP-ICP-MS）是一种很有前途的技术，可用于测定和表征 MNPs。然而，一些元素或同位素受到光谱干扰的阻碍，而动态反应池（DRC）技术正成为 ICP-MS 进行自由干扰测定的有用工具。已经开发了基于 DRC 的 SP-ICP-MS 方法，使用氨作为反应气体（同量异位或质量位移方法），用于测定二氧化钛纳米粒子（TiO NPs）、氧化铜纳米粒子（CuO NPs）、铜纳米粒子（Cu NPs）和氧化锌纳米粒子（ZnO NPs）。全面研究了诸如氨气流速和停留时间等参数对峰宽（SP-ICP-MS 中的 NP 瞬态信号）的影响。还研究了 NP 尺寸和性质的影响。
