引用本文:
谭克俊, 吴飞, 代旭, 郑莉. 光散射/荧光比率法测定全氟辛烷磺酸[J]. 应用化学,
2013, 30(2): 220-224.
doi:
DOI:10.3724/SP.J.1095.2013.20118
Citation: TAN Kejun, WU Fei, DAI Xu, ZHENG Li. Determination of Perfluorooctane Sulfonate by Light Scattering-Fluorescence Ratio Method[J]. Chinese Journal of Applied Chemistry, 2013, 30(2): 220-224. doi: DOI:10.3724/SP.J.1095.2013.20118
Citation: TAN Kejun, WU Fei, DAI Xu, ZHENG Li. Determination of Perfluorooctane Sulfonate by Light Scattering-Fluorescence Ratio Method[J]. Chinese Journal of Applied Chemistry, 2013, 30(2): 220-224. doi: DOI:10.3724/SP.J.1095.2013.20118
光散射/荧光比率法测定全氟辛烷磺酸
English
Determination of Perfluorooctane Sulfonate by Light Scattering-Fluorescence Ratio Method
Abstract:
Perfluorooctane sulfonate(PFOS) can quench the fluorescence of rhodamine B(RhB) in pH=1.81 Britton-Robinson(BR) buffer solution,and results in light scattering enhancement by electrostatic forces and hydrophobic interactions.In this work,a light scattering-fluorescence ratio method of PFOS was established with a common spectrofluorometer by measuring the light emission signals through one scanning,out of which a ratio of the intensity of light scattering at 340 nm to that of fluorescence at 596 nm could be obtained.The linear range is from 0.17 to 10.0 μmol/L,and the limit of detection(3σ) is 17 nmol/L.The method has been applied to the determination of PFOS in the environmental samples with RSD≤4.2%.
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