Bombom, MirayZaman, Buse TuğbaDalgıç Bozyiğit, GamzeŞaylan, MeltemBayraktar, AhsenArvas, BüşraYolaçan, ÇiğdemBakırdere, Sezgin2023-08-012023-08-012023Bombom, M., Zaman, B. T., Dalgıç Bozyiğit, G., Şaylan, M., Bayraktar, A., Arvas, B., Yolaçan, Ç., & Bakırdere, S. (2023). T-cut slotted quartz tube-atom trap strategy for the on-line preconcentration of thallium in well water samples. Measurement, 220, pp. 1-7. https://doi.org/10.1016/j.measurement.2023.1133631873-412X0263-2241https://hdl.handle.net/20.500.13055/516https://doi.org/10.1016/j.measurement.2023.113363In this study, an on-line preconcentration system was developed for the quantitative determination of thallium in well water samples using hydrogen-assisted T-cut slotted quartz tube atom trapping (HA-T-SQT-AT) coupled to flame atomic absorption spectrometry (FAAS). The method is based on trapping the thallium atoms on the inner surface of the T-SQT for a short period using sample aspiration and lean flame conditions. Then, hydrogen gas as a reducing agent was released instantly to free the trapped analyte atoms, resulting in a sharp and narrow signal. The system analytical performance was enhanced by performing comprehensive optimization of several factors. The linear range and LOD/LOQ values of the optimized method were found to be 7.5–––200 ng/mL and 2.6/8.7 ng/mL, respectively. Accuracy/practicability of the presented method were verified using well water samples, and the percent recoveries calculated using the external calibration approach were all above 80%.eninfo:eu-repo/semantics/closedAccessThalliumFlame Atomic Absorption SpectrometryAtom TrapT-Shaped Slotted Quartz TubeWell WaterArticle10.1016/j.measurement.2023.11336322017Q1WOS:0010489662000012-s2.0-85165542060Q1