当前位置: X-MOL 学术J. Anal. At. Spectrom. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
ICP-MS spatial profiles in presence of ethanol and their application for the analysis of ethanol containing samples
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2021-08-18 , DOI: 10.1039/d1ja00134e
Carlos Sánchez 1 , Raquel Sánchez 1 , Charles-Philippe Lienemann 2 , José-Luis Todolí 1
Affiliation  

A total sample consumption system (hTISIS) was used for the first time to evaluate the plasma spatial ion profile for ethanolic samples in ICP-MS. The effects of the extraction lens voltages, the inner diameter of the torch injector, the plasma sampled zone, spray chamber temperature and nebulizer and high matrix introduction gas flow rates on the plasma ion cloud distribution were systematically studied. Regarding the minimization of matrix effects caused by ethanolic matrices, it was found that extraction lenses voltages and the injector inner diameter played a key role when the hTISIS was set at 300 °C. Under these conditions, the aerosol transport interferences were eliminated. The combination of the widest injector (2.5 mm id) with a 5 V extra lens voltage allowed the mitigation of the matrix effects. Moreover, it was observed that for a 2.5 mm id injector, the interferences could be mitigated irrespectively of the plasma sampled volume. Meanwhile, for narrower injectors, it was necessary to carefully select the plasma sampled zone. Finally, the accurate determination of As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Rb, Sr, V and Zn in bioethanol and beverages (wine, whiskey, gyn, vodka, rum and apple liqueur) was performed under optimum experimental conditions.

中文翻译:

存在乙醇时的 ICP-MS 空间分布及其在分析含乙醇样品中的应用

首次使用总样品消耗系统 (hTISIS) 评估 ICP-MS 中乙醇样品的等离子体空间离子分布。系统研究了提取透镜电压、炬管喷射器内径、等离子体采样区、雾化室温度和雾化器以及高基体引入气体流速对等离子体离子云分布的影响。关于最小化乙醇基质引起的基质效应,发现当 hTISIS 设置为 300 °C 时,提取透镜电压和注射器内径起着关键作用。在这些条件下,消除了气溶胶传输干扰。最宽的注射器(2.5 毫米内径)与 5 V 额外透镜电压的组合允许减轻矩阵效应。此外,观察到对于 2. 5 毫米内径进样器,无论等离子体采样体积如何,都可以减轻干扰。同时,对于较窄的喷射器,有必要仔细选择等离子体采样区。最后,在生物乙醇和饮料(葡萄酒、威士忌、吉恩、伏特加、朗姆酒和苹果利口酒)中准确测定了 As、Cd、Co、Cr、Cu、Fe、Mn、Ni、Rb、Sr、V 和 Zn最佳实验条件。
更新日期:2021-09-02
down
wechat
bug