游离碱卟啉作为重金属传感器的离子载体
Free Base Porphyrins as Ionophores for Heavy Metal Sensors.
作者信息
Vlascici Dana, Fagadar-Cosma Eugenia, Pica Elena Maria, Cosma Viorica, Bizerea Otilia, Mihailescu Gheorghe, Olenic Liliana
机构信息
West University of Timisoara, 4 V. Parvan Ave, Timisoara 300223 Timis, Romania.
Institute of Chemistry -Timişoara of Romanian Academy, 24 M. Viteazul Ave, 300223-Timisoara, Romania.
出版信息
Sensors (Basel). 2008 Aug 25;8(8):4995-5004. doi: 10.3390/s8084995.
Two functionalized porphyrins: 5,10,15,20-tetrakis(3,4-dimethoxyphenyl) porphyrin (A) and 5,10,15,20-tetrakis(3-hydroxyphenyl)porphyrin (B) obtained and characterized by us were used as ionophores (I) for preparing PVC-based membrane sensors selective to Ag⁺, Pb and Cu. The membranes were prepared using three different plasticizers: (bis(2-ethylhexyl)sebacate (DOS), dioctylphtalate (DOP), o-nitrophenyl octyl ether (NPOE) and potassium tetrakis(4-chlorophenyl)borate (KTClPB) as additive. The functional parameters (linear concentration range, slope and selectivity) of the sensors with membrane composition: (I:PVC:KTClPB:Plasticizer) in different ratios were investigated. The best results were obtained for the membranes in the ratio I:PVC:KTClPB:Plasticizer 10:165:5:330. The influence of pH on the sensors response was studied. The sensors were used for a period of four months and their utility has been tested on synthetic and real samples.
我们制备并表征了两种功能化卟啉
5,10,15,20-四（3,4-二甲氧基苯基）卟啉（A）和5,10,15,20-四（3-羟基苯基）卟啉（B），将其用作离子载体（I）来制备对Ag⁺、Pb²⁺和Cu²⁺具有选择性的基于聚氯乙烯（PVC）的膜传感器。使用三种不同的增塑剂制备膜：（癸二酸二（2-乙基己基）酯（DOS）、邻苯二甲酸二辛酯（DOP）、邻硝基苯基辛基醚（NPOE）），并使用四（4-氯苯基）硼酸钾（KTClPB）作为添加剂。研究了具有不同比例膜组成（I:PVC:KTClPB:增塑剂）的传感器的功能参数（线性浓度范围、斜率和选择性）。对于比例为I:PVC:KTClPB:增塑剂10:165:5:330的膜，获得了最佳结果。研究了pH对传感器响应的影响。这些传感器使用了四个月，并在合成样品和实际样品上测试了其效用。
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