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Citation: WANG Yaqiong, LIU Shaopu, LIU Zhongfang, HU Xiaoli. Fluorescence Quenching Reaction of Fenaminosulf with Acriflavine and Their Analytical Applications[J]. Chinese Journal of Applied Chemistry, ;2012, 29(4): 440-445. doi: 10.3724/SP.J.1095.2012.00222 shu

Fluorescence Quenching Reaction of Fenaminosulf with Acriflavine and Their Analytical Applications

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

Corresponding author: HU Xiaoli,
Received Date: 23 May 2011
Available Online: 19 July 2011
Fund Project: 国家自然科学基金(20875078) (20875078)发光与实时分析重庆市重点实验室(CSTC,2006CA8006)资助项目 (CSTC,2006CA8006)

In pH=5.4 Britton-Robinson(BR) buffer solution,fenaminosulf(FM) reacted with acriflavine(AF) to form an ion associated complex,which resulted in the quench of the fluorescences of acriflavine.The maximum excitation wavelength(λ_ex) and emission wavelength(λ_em) was located at 451 nm and 508 nm.The quenching value(ΔF) was linear to the concentration of FM in the range of 0.16~5.0 mg/L with the detection of limit(3σ) of 0.048 mg/L.Therefore,a simple,rapid,highly sensitive and selective method for the determination of FM by fluorescence quenching had been established.The proposed method had been used to determine FM in fenaminosulf pesticide and soil residue with satisfactory results.In addition,the fluorescence characters of the reaction system and the mechanism of fluorescence quenching were also discussed by AM1 calculations.
- fenaminosulf,
- acriflavine,
- fluorescence quenching
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