A new luminol derivative as a fluorescent probe for trace analysis of copper(II)
| Autor: | Yun Luo, Zaide Zhou, Yi Li, Martin M. F. Choi, Baoqiang Lv, Dan Xiao |
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| Rok vydání: | 2008 |
| Předmět: |
inorganic chemicals
Detection limit Quenching (fluorescence) Inorganic chemistry Fluorescence spectrometry Analytical chemistry chemistry.chemical_element chemical and pharmacologic phenomena Fluorescence Copper Analytical Chemistry Luminol chemistry.chemical_compound chemistry Linear range Derivative (chemistry) |
| Zdroj: | Microchimica Acta. 164:411-417 |
| ISSN: | 1436-5073 0026-3672 |
| DOI: | 10.1007/s00604-008-0076-4 |
| Popis: | A new luminol derivative has been synthesized and its fluorescence has been studied. The luminol derivative emits at 460 nm in pH 10.0 phosphate buffer which is different from the original luminol that emits at 425 nm under the same conditions. Cu2+ exhibits strong fluorescence quenching effect on the luminol derivative and the quenching mechanism is discussed in detail. This luminol derivative can be applied as a fluorescent probe for ultra-trace analysis of Cu2+. The effects of pH, interferents and the stability have also been investigated. The fluorescent probe shows good reproducibility, and the relative standard deviation of response to Cu2+ is 0.7% (n = 6). The lower linear range and the limit of detection are 0–500 and 0.27 nmol L−1, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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