Dissolved oxygen (DO) level is of capital importance in the field of environmental monitoring, food fermentation, industrial production, and clinical medicine. Optical oxygen sensors with high sensitivity, accuracy, stability, and anti-jamming capability for DO content detection have provoked scientists’ attention in recent years. In this work, we selected platinum octaethylporphine (PtOEP), low-density polyethylene (LDPE), and high-density polyethylene (HDPE) as the fluorescent indicator and matrix materials, respectively. Porous LDPE/PtOEP and HDPE/PtOEP oxygen-sensing films were constructed by incorporating PtOEP in PE via the phase-separation method. The optimum parameters were obtained as follows: the concentrations of LDPE and HDPE solutions were 0.010 mg/L, and PtOEP was 8 μg. Based on the above study, the effects of different kinds of PE on the performance of the oxygen-sensing film were studied in detail, finding that the LDPE/PtOEP oxygen-sensing film had better photostability and could measure the DO concentrations of several water samples accurately.

溶解氧 (DO) 水平在环境监测、食品发酵、工业生产和临床医学领域具有重要意义。用于溶解氧含量检测的高灵敏度、准确度、稳定性和抗干扰能力的光学氧传感器近年来引起了科学家们的关注。在这项工作中，我们分别选择了铂八乙基卟吩（PtOEP）、低密度聚乙烯（LDPE）和高密度聚乙烯（HDPE）作为荧光指示剂和基质材料。多孔 LDPE/PtOEP 和 HDPE/PtOEP 氧传感薄膜是通过相分离方法将 PtOEP 掺入 PE 中构建的。得到最佳参数如下：LDPE和HDPE溶液的浓度为0.010 mg/L，PtOEP为8 μg。基于以上研究，