Abstract
We report on a highly sensitive and selective electrochemiluminescence (ECL) based method for the determination of pentachlorophenol (PCP). It is based on a new hybrid material composed of CdS quantum dots (QDs), graphene, and carbon nanotubes (CNTs), and uses peroxodisulfate as the coreactant. The use of this system results in a nearly 18-fold increase in ECL intensity. On interaction between PCP and the QDs, a decrease in ECL intensity is observed at PCP in a concentration as low as 1.0 pM and over a wide linear range (from 1.0 pM to 1.0 nM). The method is hardly affected by other chlorophenols and nitrophenols, and the electrode can be recycled.
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Acknowledgment
This work was supported by the National Natural Science Foundation of China (51178173, 51202065, 51078129), Innovation Research Team in University (IRT1238), Program for New Century Excellent Talents in University (11–0126), the Key Program of National Natural Science Foundation of China (51238002), and Hunan Province graduate student scientific research innovation plan (No. 521298769).
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Jiesheng Liang and Shanli Yang contributed equally
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Liang, J., Yang, S., Luo, S. et al. Ultrasensitive electrochemiluminescent detection of pentachlorophenol using a multiple amplification strategy based on a hybrid material made from quantum dots, graphene, and carbon nanotubes. Microchim Acta 181, 759–765 (2014). https://doi.org/10.1007/s00604-013-1081-9
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DOI: https://doi.org/10.1007/s00604-013-1081-9