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- W2123706722 abstract "A micellar-stabilized room-temperature phosphorescence (MS–RTP) method for the determination of atenolol has been developed in micellar solutions of sodium dodecylsulphate (SDS) in the presence of thallium(I) as a heavy atom and sodium sulphite as an oxygen scavenger. The effects of thallium(I) nitrate, SDS and sodium sulphite concentrations on atenolol MS–RTP intensity were studied. Optimized conditions to obtain maximum sensitivity were 0.015 mol/L thallium(I) nitrate, 0.1 mol/L SDS and 0.0075 mol/L sodium sulphite. The maximum phosphorescence signal was completely developed in 10 min and the intensity was measured at λex = 272 nm and λem = 412 nm. The linear range of application obtained was 2.01–16.00 µg/mL. The detection limit estimated from the least-squares regression analysis was 0.86 µg/mL and the relative standard deviation of 10 replicates was 1.7%. The proposed method was applied to the determination of atenolol in a pharmaceutical formulation. The quantitation was carried out by means of standard calibration, standard-additions calibration and Youden calibration. These three experiments were necessary to evaluate the presence of constant and proportional errors due to the matrix. Copyright © 2007 John Wiley & Sons, Ltd." @default.
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- W2123706722 date "2007-01-01" @default.
- W2123706722 modified "2023-10-17" @default.
- W2123706722 title "Determination of atenolol by the micelle-stabilized room-temperature phosphorescence methodology" @default.
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- W2123706722 doi "https://doi.org/10.1002/bio.994" @default.
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