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Ai-min Ren,Yu Zhang,Weiwei Yu,Kai Zhao,Zhiru Hu,Zhiquan Zhang,Guodong Feng,Zhi-Guang Song 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.99 No.-
In this article, a series of coumarin derivativefluorescent probes have been synthesized, which can realizesimple, rapid and sensitive detection of Pd2+. We tested thefluorescence properties of threefluorescentprobes, (E)-N0-(((4-chloropyridin-2-yl) methylene)-7-(diethylamino)-2-oxo-2H-chromene-3-carbohy(CMDCC) has the betterfluorescence properties and anti-interference ability. Then, CMDCC as thefluorescence probe for detection of Pd2+ was systematic studied. Under optimized conditions, this probehas a wide pH range, a lower detection limit (4.4510 8 mol L-1), and a faster response speed (3 min). Inthe Pd2+ concentration range of 0.1 5 mmol L-1, thefluorescence intensity of this probe and concentrationof Pd2+ show a good linear response. In this work, Pd2+ content in organic waste liquid was successfullydetected and a standard addition test was also performed. The satisfactory recovery rate was obtained. Moreover, it can be observed with naked eyes that the palladium ion changes the solution color of CMDCCfrom green to red. This color change can easily be compared with other metal salts. It indicates thatCMDCC can also detect Pd2+ by colorimetric method. Therefore, CMDCC should be used to rapidly,conveniently detect Pd2+ in environmental samples.
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