Nickel determination is important because of its use in many industrial areas and its negative effects on human health. In this study, an ultraviolet-based photochemical vapor generation (UV-PVG) setup was combined with a T-shaped zirconium-coated slotted quartz tube-atom trapping (T-SQT-AT) apparatus to boost the sensitivity of a flame atomic absorption spectrophotometer for nickel determination. Nickel was separated from the sample matrix by converting it into its volatile species prior to online preconcentration by trapping on the zirconium-coated T-SQT inner surface. Analytical performance was maximized by optimizing all variable conditions. The limit of detection (LOD) and limit of quantification (LOQ) were found as 10 and 33 µg/L, respectively. Daphne tea and lake water samples were analyzed under optimum conditions, and there was no detectable nickel in the samples. For this purpose, spiking experiments were carried out for the samples in order to evaluate the applicability and accuracy of the method. The percent recovery values calculated for the two samples spiked at three different concentrations ranged between 90 and 112%. To our best knowledge, this is the first study in literature where UV-PVG was combined with T-SQT-AT for the determination of nickel in daphne tea and lake water samples prior to FAAS determination.

镍的测定很重要，因为它在许多工业领域中都有使用，并且对人类健康有负面影响。在这项研究中，基于紫外线的光化学蒸汽发生 (UV-PVG) 装置与 T 形锆涂层开槽石英管原子捕获 (T-SQT-AT) 装置相结合，以提高火焰原子吸收的灵敏度用于镍测定的分光光度计。在在线预浓缩之前，通过捕获在锆涂层 T-SQT 内表面上，将镍转化为挥发性物质，从而将镍从样品基质中分离出来。通过优化所有可变条件使分析性能最大化。检测限 (LOD) 和定量限 (LOQ) 分别为 10 和 33 µg/L。在最佳条件下对达芙妮茶和湖水样品进行分析，样品中没有可检测到的镍。为此，对样品进行了加标实验，以评估该方法的适用性和准确性。两种样品加标的三种不同浓度的百分比回收率值介于 90% 和 112% 之间。据我们所知，这是文献中首次将 UV-PVG 与 T-SQT-AT 结合用于在 FAAS 测定之前测定达芙妮茶和湖水样品中的镍。