双锰卟啉应用于钼酸根电位传感器的研究  

A μ-oxo-bridged manganeseporphyrin dimer based potentiometric sensor for molybdate with high selectivity

作　　者：方正辉[1] 龙革[1] 

机构地区：[1]岳阳职业技术学院,岳阳414000

出　　处：《分析试验室》2010年第2期93-96,共4页Chinese Journal of Analysis Laboratory

摘　　要：以[MnT（p—CH3）PP]2O为活性物质、以o-NPOE为增塑剂PVC膜制成的新型高效电位型传感器来测定M004。一离子浓度。该电极具有线性能斯特斜率为30．5的响应特征，其工作浓度范围为2．1×10-6～1．0×10-1mol／L，pH范围为5．0～12．5，响应时间不超过15s，对常见干扰离子有较高的选择性，并被应用于实际样品中MoO42-含量的测定。A novel high-selective potentiometric sensor for molybdate was prepared with a PVC membrane utilizing μ- oxo-bis[ 5,10,15,20-tetra （ p-methylphenyl ） porphinatomanganese （ Ⅲ ） 3 [[ nn （p-Me） TPP ]2 0 ] as an electroactive material and 2-nitrophenyl octyl ether （o-NPOE） as a plasticizer. The sensor exhibited a linear response with a Nemstian slope of 30.5 mV per decade within a concentration range of 2.1 × 10-6 to 1.0× 10-1 mol/L MOO4-, with a working pH range from 5.0 to 12.5, and a fast response time of less than 15 s. The electrode showed improved selectivity toward molybdate with respect to common coexisting anions. The sensor is preliminary applied to the assay of MoO42- in corrosion inhibitor samples with satisfactory results.

关 键 词：双锰卟啉 钼酸根离子 电位型化学传感器 

分 类 号：O557.1[理学—热学与物质分子运动论]