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- W2891364610 abstract "A new effervescence-assisted dispersive liquid-liquid microextraction, EA-DLLME, technique was developed for preconcentration and flame atomic absorption spectrometric determination of copper in aqueous samples. Effervescence assistance and DES combination for metal ion extraction was used for the first time. In the presented study, six different effervescence powders were examined to achieve maximum extraction efficiency. In addition, 1,5 diphenyl carbazide was used as complexing agent and DES prepared by mixing choline chloride and phenol was used as extraction solvent. The effect of several parameters such as pH, concentration of complexing agent, composition and volume of DES, amount of THF, composition and amount of effervescent agent were examined. Performed experiments showed that optimum pH was 6.0, the best effervesce powder composition was NaH2PO4:Na2CO3 with 2 × 10−3:1 × 10−3 molar ratio and the amount of effervesce powder was 0.4 g. Under optimum conditions enhancement factor, limit of detection and limit of quantification were calculated as 78, 2.9 and 9.7 μg L−1, respectively. In addition, to prove precision of the method intra-day relative standard deviations were calculated for 10 and 50 μg L−1 Cu2+ concentrations and found as 2.1% and 1.3%, respectively. The proposed method showed good linearity within the range of 10.0–100 μg L−1. Finally, proposed method was successfully applied to determination of copper traces in aqueous samples." @default.
- W2891364610 created "2018-09-27" @default.
- W2891364610 creator A5004904411 @default.
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- W2891364610 date "2018-08-09" @default.
- W2891364610 modified "2023-10-13" @default.
- W2891364610 title "Effervescence-assisted dispersive liquid-liquid microextraction based on deep eutectic solvent for preconcentration and FAAS determination of copper in aqueous samples" @default.
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- W2891364610 doi "https://doi.org/10.1080/03067319.2018.1517872" @default.
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