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• W1546705519 abstract "This work presents a cloud-point extraction process using the micelle-mediated extraction method for simultaneous preconcentration and determination of Sb(III) and Sb(V) species in biological and environmental samples as a prior preconcentration step to their spectrophotometric determination. The analytical system is based on the selective reaction between Sb(III) and 3-dichloro-6-(3-carboxy-2-hydroxy-1-naphthylazo)quinoxaline (DCHNAQ) in the presence of cetyltrimethylammonium bromide (CTAB) and potassium iodide at pH 4.5. Total Sb concentration was determined after reduction of Sb(V) to Sb(III) in the presence of potassium iodide and ascorbic acid. The optimal reaction conditions and extraction were studied, and the analytical characteristics of the method (e.g., limits of detection and quantification, linear range, preconcentration, improvement factors) were obtained. Linearity for Sb(III) was obeyed in the range of 0.2–20 ng ml−1. The detection and quantification limits for the determination of Sb(III) were 0.055 and 0.185 ng ml−1, respectively. The method has a lower detection limit and wider linear range, inexpensive instrument, and low cost, and is more sensitive compared with most other methods. The interference effect of some anions and cations was also studied. The method was applied to the determination of Sb(III) in the presence of Sb(V) and total antimony in blood plasma, urine, biological, and water samples." @default.
• W1546705519 created "2016-06-24" @default.
• W1546705519 creator A5031337435 @default.
• W1546705519 creator A5060259922 @default.
• W1546705519 date "2016-01-01" @default.
• W1546705519 modified "2023-09-25" @default.
• W1546705519 title "Use of cloud-point preconcentration for spectrophotometric determination of trace amounts of antimony in biological and environmental samples" @default.
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• W1546705519 doi "https://doi.org/10.1016/j.ab.2015.08.008" @default.
• W1546705519 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26278170" @default.
• W1546705519 hasPublicationYear "2016" @default.
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