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- W1970147322 abstract "This paper describes selenium determination based on Se(0) preconcentration in the imprinted polymer (synthesized with 2.25mmol SeO2, 4-vinylpyridine and 1-vinylimidazole) with subsequent detection on-line in HG-FAAS. During the synthesis, SeO2 is reduced to Se (0). Therefore, there are no MIP neither IIP in the present work, thus we denominated: AIP, i.e., atomically imprinted polymers. For the optimization of analytical parameters Doehlert design was used. The method presented limit of detection and limit of quantification of 53 and 177ngL(-1), respectively, and linear range from 0.17 up to 6μgL(-1) (r=0.9936). The preconcentration factor (PF), consumptive index (CI) and concentration efficiency (CE) were 232; 0.06mL and 58min(-1) respectively. The proposed method was successfully applied to determine Se in Brazil nuts (0.33±0.03mgkg(-1)), apricot (0.46±0.02mgkg(-1)), white bean (0.47±0.03mgkg(-1)), rice flour (0.47±0.02mgkg(-1)) and milk powder (0.22±0.01mgkg(-1)) samples. It was possible to do 12 analyzes per hour. Accuracy was checked and confirmed by analyzing certified reference material (DORM-2, dogfish muscle), and samples precision was satisfactory with RSD lower than 10%." @default.
- W1970147322 created "2016-06-24" @default.
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- W1970147322 date "2013-03-01" @default.
- W1970147322 modified "2023-10-17" @default.
- W1970147322 title "Determination of selenium using atomically imprinted polymer (AIP) and hydride generation atomic absorption spectrometry" @default.
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- W1970147322 doi "https://doi.org/10.1016/j.aca.2013.01.051" @default.
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