Yıldız Technical University, Department of Chemistry, 34210 İstanbul, Turkey.
Yıldız Technical University, Department of Chemistry, 34210 İstanbul, Turkey; Turkish Academy of Sciences (TÜBA), Vedat Dalokay Street, No: 112, Çankaya 06670, Ankara, Turkey.
Food Chem. 2022 Dec 1;396:133669. doi: 10.1016/j.foodchem.2022.133669. Epub 2022 Jul 11.
In this work, dispersive solid-phase extraction procedure was developed for trace cadmium determination before flame atomic absorption spectrometry (FAAS) measurement. Copper(II) based nanoflowers were synthesized to utilize as adsorbent for preconcentration of cadmium. The detection power of the spectrometric system was enhanced by placing a slotted quartz tube (SQT) onto the flame burner which increases the residence time of the analyte atoms in the flame region. The analytical performance of the developed system was evaluated with and without SQT equipment and the enhancement in detection power was calculated by the ratio of detection limits of CuNF-DSPE-FAAS (copper nanoflower based dispersive solid phase extraction-flame atomic absorption spectrometry) and FAAS system. Enhancement was determined as 73 and 104.3 times for CuNF-DSPE-FAAS and CuNF-DSPE-SQT-FAAS (CuNF-DSPE-slotted quartz tube-FAAS), respectively. Percent recovery results indicated the applicability of the developed method for the determination of trace cadmium.
在这项工作中，开发了分散固相萃取程序，用于火焰原子吸收光谱法（FAAS）测量前痕量镉的测定。合成了基于铜（II）的纳米花，用作吸附剂用于预浓缩镉。通过将开槽石英管（SQT）放置在火焰燃烧器上，提高了光谱系统的检测能力，从而增加了分析物原子在火焰区域的停留时间。通过使用和不使用 SQT 设备评估了所开发系统的分析性能，并通过计算基于铜纳米花的分散固相萃取-火焰原子吸收光谱法（CuNF-DSPE-FAAS）和 FAAS 系统的检测限的比值来计算检测能力的增强。增强分别为 73 和 104.3 倍，用于 CuNF-DSPE-FAAS 和 CuNF-DSPE-SQT-FAAS（CuNF-DSPE-开槽石英管-FAAS）。回收率结果表明，该方法适用于痕量镉的测定。
