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Issue 5, 2019
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DNA-shaped silver(I) coordination polymer based micro-solid phase extraction for determination of Amaranth and Brilliant Blue FCF in food and water samples

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Abstract

In this study, a green and simple mechanochemical synthesis was applied for fabricating a cationic silver(I) coordination polymer (silver(I)-CP) as a promising sorbent for extracting two food dyes including Amaranth and Brilliant Blue FCF during dispersive micro-solid phase extraction directly before UV-Vis spectrophotometric detection. Then, the spectra without overlapping were recorded between 400 and 700 nm. In addition, different operating variables which influenced the extraction efficiency of Amaranth and Brilliant Blue FCF such as pH, volume of eluent, and sorbent dosage, along with extraction time were investigated by central composite design (CCD). Based on the results, the calibration graphs were linear in the range of 15–6000 ng mL−1 with LODs of 2.28 and 3.83 ng mL−1 for Brilliant Blue FCF and Amaranth analytes, respectively. Further, the RSDs for five replicate measurements of 50–500 ng mL−1 in Brilliant Blue FCF and Amaranth were 4.2 and 4.7%, respectively. The established method was employed for both preconcentrating and determining trace amounts of dyes in food and water samples with satisfactory analytical results. Finally, the recovery of analytes at 4 spiking levels of 50, 100, 200 and 500 ng mL−1 ranged from 95.4–104.5%.

Graphical abstract: DNA-shaped silver(i) coordination polymer based micro-solid phase extraction for determination of Amaranth and Brilliant Blue FCF in food and water samples

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Publication details

The article was received on 26 Oct 2018, accepted on 18 Dec 2018 and first published on 10 Jan 2019


Article type: Paper
DOI: 10.1039/C8AY02350F
Citation: Anal. Methods, 2019,11, 618-626

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    DNA-shaped silver(I) coordination polymer based micro-solid phase extraction for determination of Amaranth and Brilliant Blue FCF in food and water samples

    H. R. Noormohamadi, M. R. Fat'hi, M. Ghaedi, V. Nobakht and S. Azizzadeh, Anal. Methods, 2019, 11, 618
    DOI: 10.1039/C8AY02350F

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