Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 402, Issue 1, Pages 389-395Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-011-5305-8
Keywords
Chemiluminescence; Sensor array; Sweeteners; Discrimination; Linear discriminant analysis (LDA)
Funding
- National Natural Science Foundation of China [21027013]
- National High Technology Research and Development Program of China [2009AA03Z321]
- Natural Science Foundation of Chongqing Municipal Education Commission [KJ101309]
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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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