Melamine selective acrylate citric acid (ACA) based polymeric membrane sensor was prepared by radical polymerization method and the sensor was characterized. The sensor showed a selective fluorescent response to melamine (λ_ex/λ_em = 388/425 nm). The sensor response is linear in the concentration range of 3.96 × 10⁻⁹ to 7.93 × 10⁻⁸ mol L⁻¹, the optimum pH value is 6.0 and response time is less than 1 min. Limit of detection (LOD) and limit of quantification (LOQ) were calculated as 2.32 × 10⁻¹⁰ mol L⁻¹ and as 7.74 × 10⁻¹⁰ mol L⁻¹, respectively. The sensor showed great selectivity towards melamine in the presence of a large number of molecules and ions. The performance of sensor was also confirmed by determining of melamine in milk powder sample and the results were compared with HPLC results and acceptable results were obtained. As a conclusion, the results revealed that the proposed sensor is an interesting alternative for melamine determination.

采用自由基聚合法制备了基于三聚氰胺选择性丙烯酸酯柠檬酸（ACA）的聚合物膜传感器，并对传感器进行了表征。该传感器显示出对三聚氰胺的选择性荧光响应（λ _ex /λ _em  = 388/425 nm）。^{传感器响应在3.96 × 10 -9}到7.93 × 10 ^-8 mol L ^-1的浓度范围内呈线性，最适pH值为6.0，响应时间小于1 min。检测限 (LOD) 和定量限 (LOQ) 计算为 2.32 × 10 ^-10 mol L ^-1和 7.74 × 10 ^-10 mol L ^-1， 分别。在存在大量分子和离子的情况下，该传感器对三聚氰胺表现出极大的选择性。还通过测定奶粉样品中的三聚氰胺来确认传感器的性能，并将结果与​​ HPLC 结果进行比较，得到了可接受的结果。作为结论，结果表明，所提出的传感器是三聚氰胺测定的有趣替代方案。