Abstract
In this paper, we report a chemiluminescence (CL) sensor array based on catalytic nanomaterials for the discrimination of ten sweeteners, including five natural sugars and five artificial sweeteners. The CL response patterns (“fingerprints”) can be obtained for a given compound on the nanomaterial array and then identified through linear discriminant analysis (LDA). Moreover, each pure sweetener was quantified based on the emission intensities of selected sensor elements. The linear ranges for these sweeteners lie within 0.05–100 mM, but vary with the type of sweetener. The applicability of this array to real-life samples was demonstrated by applying it to various beverages, and the results showed that the sensor array possesses excellent discrimination power and reversibility.
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Acknowledgements
The authors gratefully thank the National Natural Science Foundation of China (no. 21027013), the National High Technology Research and Development Program of China (no. 2009AA03Z321), and the Natural Science Foundation of Chongqing Municipal Education Commission (no. KJ101309) for their financial support.
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Published in the 10th Anniversary Issue.
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Niu, W., Kong, H., Wang, H. et al. A chemiluminescence sensor array for discriminating natural sugars and artificial sweeteners. Anal Bioanal Chem 402, 389–395 (2012). https://doi.org/10.1007/s00216-011-5305-8
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DOI: https://doi.org/10.1007/s00216-011-5305-8