Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 135, Issue -, Pages 1074-1079Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2014.08.010
Keywords
Resonance Rayleigh light scattering (RLS); Gold nanoparticles (AuNPs); Salmeterol xinafoate
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Funding
- Natural Science Foundation of Jilin Province [20140101023JC]
- Twelfth Five-Year Program of Science and Technology of the Educational Bureau of Jilin Province [20140257]
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The paper explores the method of determination of salmeterol xinafoate at nanogram level with gold nanoparticles (AuNPs) probe, to measure the intensity of resonance Rayleigh light scattering (RLS) by a common spectrofluorometer. The RLS intensity of salmeterol xinafoate was greatly enhanced by AuNPs, with the maximum scattering peak at 357 nm. The salmeterol xinafoate was determined basing on the binding of salmeterol xinafoate to AuNPs by electrostatic adsorption. Under the optimum conditions, the enhanced RLS intensity was directly proportional to the concentration of salmeterol xinafoate in the range of 0.054-6.038 mu g mL(-1) with a good linear relationship (r = 0.9928). The limit of detection (LOD) was 9.48 ng mL(-1). The interference tests were performed carefully. With the proposed method, the synthetic samples were analyzed satisfactorily, the recovery and RSD were 102.5-103.0% and 0.67-1.0% respectively. (C) 2014 Elsevier B.V. All rights reserved.
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