A facile and sensitive coprecipitation method coupled with flame atomic absorption spectrometry for quantification of Cu(II) ions in complex matrices Scientific paper

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Duygu Ozdes
Celal Duran
Hakan Bektas
Emre Mentese


In the present investigation, the application of an organic copre­cip­it­ant, 2-[5,6-dichloro-2-(2-bromobenzyl)-1H-benzimidazole-1-yl]acetohydrazide (DIBBA), for separation and preconcentration of Cu(II) ions in fruit and water samples through a new carrier element free coprecipitation (CEFC) method was researched for the first time. Flame atomic absorption spectrometer (FAAS) was used for the analyses of Cu(II) ions. The main effective experi­mental fac­tors such as solution pH, DIBBA quantity, waiting time, centrifuge speed and duration and volume of sample on the recovery efficiency of Cu(II) ions were explored in detail. Under the optimized conditions the preconcen­tration factor (PF), relative standard deviation (RSD), and limits of detection (LOD) was achieved as 50, 3.4 % and 0.44 µg L-1, respectively. No interference effects were detected by virtue of the presence of various foreign ions. Satis­factory recoveries (in the range of 94.4 to 103.0 %) in the environmental sample matrix were acquired. After being validated the recommended select­ive, low cost, simple and rapid CEFC method by spike/recovery tests, it was properly imple­mented for the low levels detection of Cu(II) ions in sour cherry, mulberry, apple, and peach as fruit samples and stream and sea water samples without any significant matrix effects.


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D. Ozdes, C. . Duran, H. Bektas, and E. . Mentese, “A facile and sensitive coprecipitation method coupled with flame atomic absorption spectrometry for quantification of Cu(II) ions in complex matrices: Scientific paper”, J. Serb. Chem. Soc., vol. 88, no. 3, pp. 301–312, Dec. 2022.
Analytical Chemistry


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