期刊
ANALYTICA CHIMICA ACTA
卷 635, 期 2, 页码 202-206出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2009.01.002
关键词
Self-aggregation; Free-probe; Resonance light scattering (RLS); Dextrin
资金
- National Natural Science Foundation of China [30271033]
- Municipal Science Foundation of Shantou [S2002023]
A novel free-probe assay of dextrin was established based on the resonance light scattering (RLS) enhancement in aqueous solution due to the self-aggregation of dextrin. The RLS intensity was well proportional to the concentration of dextrin over the wide range 0.2-14 mu g mL(-1) and a detection limit 0.02 mu g mL(-1) was obtained in the optimum conditions. The effect factors such as pH. buffer medium, holding time ionic, strength and temperature were studied in detail. Little or no interference was presented in the detection when adding coexisting substances including various metal ions and some saccharine in the solution. The assay proposed owns the advantages of easy operation, rapidity, sensitivity and practicability. Three synthetic samples and three kinds of medicine samples were analyzed with satisfactory results. (C) 2009 Elsevier B.V. All rights reserved.
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