Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Dec;83(1):161-4. doi: 10.1016/j.saa.2011.08.008. Epub 2011 Aug 18.
A new fluorogenic method for selective and sensitive determination of beryllium using 2,6-diphenyl-4-benzo-9-crown-3-pyrane (DBCP) was developed. The proposed fluorescent probe undergoes fluorescent emission intensity enhancement upon binding to beryllium ions in MeOH/H(2)O (70:30, v/v) solution. The fluorescence enhancement of DBCP is attributed to a 1:1 complex formation between DBCP and Be(2+) ion, which has been utilized as the basis for selective detection of Be(2+) ion. With the optimum condition described, the fluorescence enhancement at 531 nm was linear to the concentration of beryllium in the range of 1.6×10(-8)-1.6×10(-7) M and a detection limit of 1.5×10(-9) M. The fluorescent probe exhibits high selectivity for Be(2+) ion over the other common mono, di- and trivalent cations.
一种新的荧光方法用于选择性和灵敏的铍使用 2,6-二苯基-4-苯并-9-冠-3-吡喃(DBCP)。提出的荧光探针在 MeOH/H(2)O(70:30,v/v)溶液中与铍离子结合后，荧光发射强度增强。DBCP 的荧光增强归因于 DBCP 和 Be(2+)离子之间 1:1 络合形成，这已被用作选择性检测 Be(2+)离子的基础。在描述的最佳条件下，531nm 处的荧光增强与铍浓度在 1.6×10(-8)-1.6×10(-7)M 范围内呈线性关系，检测限为 1.5×10(-9)M。荧光探针对 Be(2+)离子具有高选择性，超过其他常见的单价、二价和三价阳离子。
