A green and simple method has been proposed in this work for the simultaneous determination of V, Ni and Fe in fuel ash samples by solid sampling high resolution continuum source graphite furnace atomic absorption spectrometry (SS HR CS GFAAS). The application of fast programs in combination with direct solid sampling allows eliminating pretreatment steps, involving minimal manipulation of sample. Iridium treated platforms were applied throughout the present study, enabling the use of aqueous standards for calibration. Correlation coefficients for the calibration curves were typically better than 0.9931. The concentrations found in the fuel ash samples analysed ranged from 0.66% to 4.2% for V, 0.23–0.7% for Ni and 0.10–0.60% for Fe. Precision (%RSD) were 5.2%, 10.0% and 9.8% for V, Ni and Fe, respectively, obtained as the average of the %RSD of six replicates of each fuel ash sample.

The optimum conditions established were applied to the determination of the target analytes in fuel ash samples. In order to test the accuracy and applicability of the proposed method in the analysis of samples, five ash samples from the combustion of fuel in power stations, were analysed. The method accuracy was evaluated by comparing the results obtained using the proposed method with the results obtained by ICP OES previous acid digestion. The results showed good agreement between them.

The goal of this work has been to develop a fast and simple methodology that permits the use of aqueous standards for straightforward calibration and the simultaneous determination of V, Ni and Fe in fuel ash samples by direct SS HR CS GFAAS.

这项工作提出了一种绿色简便的方法，通过固体采样高分辨率连续谱源石墨炉原子吸收光谱法（SS HR CS GFAAS）同时测定燃料灰分中的V，Ni和Fe。快速程序与直接固体采样相结合的应用可以消除预处理步骤，从而减少了对样品的处理。在整个本研究中均采用了铱处理过的平台，从而能够使用水标准液进行校准。校准曲线的相关系数通常优于0.9931。在分析的燃料灰分样品中发现的浓度范围为V的0.66％至4.2％，Ni的0.23-0.7％和Fe的0.10-0.60％。V，Ni和Fe的精密度（％RSD）分别为5.2％，10.0％和9.8％，

建立的最佳条件适用于测定燃料灰分样品中的目标分析物。为了检验该方法在样品分析中的准确性和适用性，对发电厂燃料燃烧产生的五个灰分样品进行了分析。通过比较使用建议的方法获得的结果和通过ICP OES先前酸消解获得的结果，评估了方法的准确性。结果表明它们之间有很好的一致性。

这项工作的目的是开发一种快速，简单的方法，该方法允许直接使用SS HR CS GFAAS进行含水标准物的直接校准以及同时测定燃料灰分样品中的V，Ni和Fe。