Department of Inorganic and Analytical Chemistry , University of Debrecen , Egyetem ter 1. , Debrecen 4032 , Hungary.
Anal Chem. 2018 May 15;90(10):5995-6000. doi: 10.1021/acs.analchem.8b00774. Epub 2018 Apr 17.
This work demonstrates for the first time the fabrication of a microfluidic flame atomic emission spectrometer (FAES), which incorporates a microburner and flame (flame-on-a-chip). An essential part of the device is a thermospray system applied for effective sample introduction, which is more easily miniaturizable and integrable than the conventional nebulization methods. The merits and limitations of the microfluidic flame atomic emission device were demonstrated and discussed. Using a commercial cigarette lighter including butane gas, the flame temperature made the analysis of the most easily excitable alkali metals possible. The calibration diagrams for Li, Na, and K showed proper linearity in the range of 5-100 mg/L. The analytical applicability of the microfluidic FAES device was tested by analyzing various real samples.
本工作首次展示了一种微流控火焰原子发射光谱仪（FAES）的制作，该仪器结合了微燃烧器和火焰（芯片上的火焰）。该装置的一个重要部分是应用于有效样品引入的热喷雾系统，与传统的雾化方法相比，该系统更易于小型化和集成化。本文对微流控火焰原子发射装置的优点和局限性进行了论证和讨论。使用包括丁烷气体的商用打火机使火焰温度能够分析最容易激发的碱金属。Li、Na 和 K 的校准曲线在 5-100mg/L 范围内呈现出适当的线性。通过分析各种实际样品，测试了微流控 FAES 装置的分析适用性。
