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Article Abstract
As a highly toxic environmental pollutant and also an important gasotransmitter in diverse physiological processes, the selective and sensitive detection of hydrogen sulfide (HS) is very significant. In this work, acetylcysteine stabilized gold nanoclusters (ACC@AuNCs)-based fluorescent sensors had been successfully constructed for HS perception. The sensing principle was that HS-induced fluorescence quenching of AuNCs which attributed to both the formation of AuS between Au(I) in the AuNCs and HS and the increased particle size. The proposed sensors showed high selectivity toward HS over other anions, amino acids and thiols, and exhibited a stable response for HS from 0.002 to 120μmolL with a detection limit of 1.8nmolL. In addition, the practical application of the designed sensors was further evaluated with water and serum samples, and the tested results agreed well with those obtained by ICP-AES method. The satisfactory recoveries and good precision show that the proposed fluorescent sensors has potential application in biological and environmental fields.
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| http://dx.doi.org/10.1016/j.talanta.2017.04.077 | DOI Listing |
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