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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 shu

Determination of Perfluorooctane Sulfonate by Light Scattering-Fluorescence Ratio Method

1.
Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China

Corresponding author: TAN Kejun,
Received Date: 27 March 2012
Available Online: 10 May 2012
Fund Project: 国家自然科学基金(20877063) (20877063)西南大学大型仪器设备开放基金(201133)资助项目 (201133)

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%.
- perfluorooctane sulfonate,
- rhodamine B,
- light scattering-fluorescence ratio
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