A mercury ion imprinted polymer material was prepared using a thiourea derivative functionalised graphene quantum dot (GQDTU) as the functional monomer using suspension polymerisation technique. This ion imprinted polymer (GQDTU-IIP) material was used to modify the surface of a glassy carbon electrode by drop casting method. The modified electrode was used for the detection of mercury using cyclic voltammetry (CV) and differential pulse voltammetric (DPV) techniques. The sensing performance was compared with a non-imprinted polymer (NIP) modified electrode. The GQDTU-IIP modified electrode showed a linear response towards concentration of Hg(II) ions in the range 5 × 10^–8 M to 2.3 × 10^–5 M using DPV with a limit of detection 23.5 nM. CV also showed linear response ranges of 6 × 10^–8 M to 8.5 × 10^–7 M and 1.4 × 10^–6 M to 7 × 10^–6 M with a limit of detection 30.2 nM. The electrode was used for the analysis of Hg(II) ions in real water samples.

使用硫脲衍生物功能化石墨烯量子点 (GQDTU) 作为功能单体，使用悬浮聚合技术制备了汞离子印迹聚合物材料。这种离子印迹聚合物 (GQDTU-IIP) 材料用于通过滴铸法对玻碳电极的表面进行改性。修饰电极用于使用循环伏安法 (CV) 和差分脉冲伏安法 (DPV) 技术检测汞。将传感性能与非印迹聚合物 (NIP) 修饰电极进行比较。GQDTU-IIP 修饰电极显示出对 Hg(II) 离子浓度的线性响应，范围为 5 × 10 ^–8  M 至 2.3 × 10 ^–5  M，使用 DPV，检测限为 23.5 nM。CV 还显示线性响应范围为 6 × 10^–8  M 至 8.5 × 10 ^–7  M 和 1.4 × 10 ^–6  M 至 7 × 10 ^–6  M，检测限为 30.2 nM。该电极用于分析实际水样中的 Hg(II) 离子。