Rapid Photoluminescence Quenching Based Detection of Cu2+ in Aqueous Medium by CdS Quantum Dots Surface Passivated by Thiourea

Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry
Ambika Kumar, R K Dutta

Abstract

Presented here is a simple yet rapid and efficient analytical method for visual as well as spectroscopic method for sensing of trace concentrations of Cu2+ ions in aqueous medium by systematic photoluminescence quenching of a highly water soluble probe made of CdS quantum dots surface modified by thiourea. The salient features of this work describe rapid detection (2 min equilibration time) of Cu2+ ions at wider linear concentration range (0.025 - 10 mg/L) corresponding to a sensitivity of 2.81(mg/L)-1 and limit of quantification of 47.3 μg/L, respectively, suitable for Cu2+ sensing in drinking water and ground water. Further, the detection of Cu2+ ion was free from most interfering cations and anions, except for minor interference from Cr3+, Hg2+ and Pb2+. The robustness of our probe for Cu2+ sensing is demonstrated from efficient Cu2+ spike recovery analysis in groundwater and river water samples.

References

Aug 17, 1999·Neurobiology of Disease·D J WaggonerJ D Gitlin
Mar 1, 2000·Proceedings of the National Academy of Sciences of the United States of America·P C WongJ D Gitlin
Feb 24, 2005·Journal of the American Chemical Society·Jose AldanaXiaogang Peng
Aug 16, 2005·Chemical Communications : Chem Comm·Bo TangJiechao Ge
Oct 27, 2006·American Journal of Physiology. Cell Physiology·Xiao YuZhuan Zhou
Aug 30, 2008·Nature Methods·Ute Resch-GengerThomas Nann
Aug 11, 2010·Chemical Society Reviews·Pavel ZrazhevskiyXiaohu Gao
Dec 16, 2010·The Analyst·Yang-Wei LinHuan-Tsung Chang
Jun 15, 2011·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Zhong CaoJian-Nan Xiang
Dec 21, 2011·Chemical Society Reviews·Ha Na KimJuyoung Yoon
Mar 5, 2014·Chemical Reviews·Edward I SolomonLi Tian
May 24, 2014·Journal of Biomedical Optics·Margarita Vázquez-González, Carolina Carrillo-Carrion
Dec 17, 2014·Physical Chemistry Chemical Physics : PCCP·Aisea VeamatahauYasuhiro Tachibana
Oct 11, 2016·Chemical Reviews·Oksana Ostroverkhova
Oct 12, 2016·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Qingfeng ZhangCong Yu

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Citations

Oct 12, 2018·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Yawei LiangJianli Liu
Mar 13, 2018·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Masanori AndoYasushi Shigeri

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