文章基本信息

标题：Development of sensitive and accurate solid-phase microextraction procedure for preconcentration of As(III) ions in real samples
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作者：Adil Elik ; Mustafa Tuzen ; Baki Hazer 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2021
卷号：11
期号：1
页码：1
DOI：10.1038/s41598-021-84819-0
出版社：Springer Nature
摘要：Abstract We synthesized the poly(methyl methacrylate-co-2-aminoethyl methacrylate (PMaema) amphiphilic copolymer in a form of solid phase adsorbent. Then it was used for separation, preconcentration and determination of trace amount of As(III) ions from foods and waters with hydride generation atomic absorption spectrometry. The PMaema was characterized by fourier transform infrared spectrometer and nuclear magnetic resonance spectrometer. The adsorption of As(III) to the PMaema was also supported using computational chemistry studies. The experimental parameters (pH, PMaema amount, adsorption time and ethanol volume) were optimized using a three-level Box–Behnken design with four experimental factors. We observed linear calibration curve for the PMaema amount in the 10–500 ng L −1 range (R 2 = 0.9956). Limit of detection, preconcentration factor and sorbent capacity of PMaema were equal to 3.3 ng L −1 , 100 and 75.8 mg g −1 , respectively. The average recoveries (spiked at 50 ng L −1 ) changes in the range of 91.5–98.6% with acceptable relative standard deviation less than 4.3%. After validation studies, the method was successfully applied for separation, preconcentration and determination of trace amount of As(III) from foods and waters.
其他摘要：Abstract We synthesized the poly(methyl methacrylate-co-2-aminoethyl methacrylate (PMaema) amphiphilic copolymer in a form of solid phase adsorbent. Then it was used for separation, preconcentration and determination of trace amount of As(III) ions from foods and waters with hydride generation atomic absorption spectrometry. The PMaema was characterized by fourier transform infrared spectrometer and nuclear magnetic resonance spectrometer. The adsorption of As(III) to the PMaema was also supported using computational chemistry studies. The experimental parameters (pH, PMaema amount, adsorption time and ethanol volume) were optimized using a three-level Box–Behnken design with four experimental factors. We observed linear calibration curve for the PMaema amount in the 10–500 ng L −1 range (R 2 = 0.9956). Limit of detection, preconcentration factor and sorbent capacity of PMaema were equal to 3.3 ng L −1 , 100 and 75.8 mg g −1 , respectively. The average recoveries (spiked at 50 ng L −1 ) changes in the range of 91.5–98.6% with acceptable relative standard deviation less than 4.3%. After validation studies, the method was successfully applied for separation, preconcentration and determination of trace amount of As(III) from foods and waters.