| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1233433 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2014 | 4 Pages |
•ECL of QDs was quenched by S2− and restored by following addition of Cd2+.•ECL turn-on sensing of Cd2+ was proposed.•The sensing mode was sensitive and selective.•Linear range: 6.2 nM–3.2 μM (R = 0.999), LOD: 2.1 nM.
A simple and sensitive method for the detection of cadmium ion was proposed based on the electrochemiluminescence (ECL) of thioglycolic acid capped-CdTe quantum dots (CdTe QDs). The ECL of CdTe QDs was firstly quenched by introduction of S2− and was restored due to following addition of Cd2+, on the basis of which, a “turn-on” ECL method for the detection of Cd2+ was demonstrated. The ECL of CdTe QDs exhibited linear response toward Cd2+ concentration in the range from 6.3 nM to 3.4 μM (R = 0.999) with a detection limit of 2.1 nM. The proposed assay was simple, sensitive, selective, and practicable in real water samples.
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