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  • Title: Resonance light scattering technique for the determination of proteins with Congo red and Triton X-100.
    Author: Wu X, Sun S, Guo C, Yang J, Sun C, Zhou C, Wu T.
    Journal: Luminescence; 2006; 21(1):56-61. PubMed ID: 16206150.
    Abstract:
    Resonance light scattering (RLS) of Congo red (CR) was greatly enhanced by BSA (HSA) in the presence of Triton X-100 (TX-100). In sodium citrate-HCl buffer (pH 2.7-3.0), the enhanced intensity of resonance light scattering at 360 nm was in proportion to the concentration of proteins [corrected] The linear relationship was obtained between the resonance light scattering intensity and proteins in the range 5.0 x 10(-8)-8.0 x 10(-6) g/mL and 1.0 x 10(-9)-6.0 x 10(-6) g/mL for BSA and HSA, respectively. Their detection limits were 1.4 x 10(-8) g/mL and 2.8 x 10(-10) g/mL (S:N = 3), respectively. Synthetic and actual samples were analysed satisfactorily.
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