A label-free method for arginine(Arg) detection was developed based on the fluorescence enhancement of a new water-soluble conjugated polymer(P1) in aqueous solution.The linear ranges for Argdetermination were 6.0×10-8-3.06×10-6 mol/L and 3.06×10-6-7.11×10 5 mol/L with the detection limit as low as 2.0 × 10-8 mol/L.This method is simple,rapid,highly selective and sensitive,rendering its practical use for the sensing of arginine hydrochloride injection.

离子液体是完全由正负离子组成的室温下为液体的盐.离子液体具有低蒸汽压、低熔点;可溶解有机物、无机盐;宽的电化学窗口;良好的离子导电性、导热性及热稳定性等特点,在有机合成、有机催化、电化学、分离分析及纯化等方面具有广泛的应用研究~([1]).离子液体越来越受到人们的关注,但在荧光分析方面的应用研究报道较少.