A simple and fast method for copper ions (Cu²⁺) and silver ions (Ag⁺) detection was established with cadmium telluride quantum dots (CdTe QDs) as fluorescent probes. In the presence of Cu²⁺ or Ag⁺, the fluorescence intensity of TGA-CdTe QD can be significantly quenched, which fitted a linear relationship between the fluorescence quenching degree (F₀–F)/F₀ and the concentration of metal ions. In this work, the lowest detected concentration for Cu²⁺ and Ag⁺ was 35.0 nM and 25.3 nM, respectively. In addition, the differentiation of Cu²⁺ and Ag⁺ at different concentrations was realized with the principal component analysis (PCA). Furthermore, Cu²⁺ was successfully detected in body fluids. This method provides a good potential for copper ions and silver ions detection with simplicity, rapidity, and excellent selectivity.

以碲化镉量子点（CdTe QDs）为荧光探针，建立了一种简便，快速的铜离子（Cu ²⁺）和银离子（Ag ⁺）检测方法。在Cu ²⁺或Ag ⁺的存在下，TGA-CdTe QD的荧光强度可以显着猝灭，这与荧光猝灭度（F ₀ - F）/ F ₀和金属离子的浓度呈线性关系。在这项工作中，Cu ²⁺和Ag ⁺的最低检测浓度分别为35.0 nM和25.3 nM。另外，Cu ²⁺和Ag ⁺的分化主成分分析（PCA）可以实现不同浓度的化合物。此外，在体液中已成功检测到Cu ²⁺。该方法具有简便，快速和出色的选择性，为铜离子和银离子检测提供了良好的潜力。