分析试验室
分析試驗室
분석시험실
ANALYTICAL LABORATORY
2010年
2期
93-96
,共4页
双锰卟啉%钼酸根离子%电位型化学传感器
雙錳卟啉%鉬痠根離子%電位型化學傳感器
쌍맹계람%목산근리자%전위형화학전감기
μ-oxo-bridged manganeseporphyrin%Molybdate%Potentiometric sensor
以[MnT(p-CH_3)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MoO_4~(2-)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~(-1) mol/L, pH范围为5.0～12.5, 响应时间不超过15 s, 对常见干扰离子有较高的选择性, 并被应用于实际样品中MoO_4~(2-)含量的测定.
以[MnT(p-CH_3)PP]_2O為活性物質、 以o-NPOE為增塑劑PVC膜製成的新型高效電位型傳感器來測定MoO_4~(2-)離子濃度. 該電極具有線性能斯特斜率為30.5的響應特徵, 其工作濃度範圍為2.1×10~(-6)～1.0×10~(-1) mol/L, pH範圍為5.0～12.5, 響應時間不超過15 s, 對常見榦擾離子有較高的選擇性, 併被應用于實際樣品中MoO_4~(2-)含量的測定.
이[MnT(p-CH_3)PP]_2O위활성물질、 이o-NPOE위증소제PVC막제성적신형고효전위형전감기래측정MoO_4~(2-)리자농도. 해전겁구유선성능사특사솔위30.5적향응특정, 기공작농도범위위2.1×10~(-6)～1.0×10~(-1) mol/L, pH범위위5.0～12.5, 향응시간불초과15 s, 대상견간우리자유교고적선택성, 병피응용우실제양품중MoO_4~(2-)함량적측정.
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)] [[Mn(p-Me)TPP]_2O] as an electroactive material and 2-nitrophenyl octyl ether (o-NPOE) as a plasticizer. The sensor exhibited a linear response with a Nernstian slope of 30.5 mV per decade within a concentration range of 2.1×10~(-6) to 1.0×10~(-1) mol/L MoO_4~-, 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 MoO_4~(2-) in corrosion inhibitor samples with satisfactory results.
