Highly Sensitive Detection of Organophosphorus Pesticides Using 5,10,15,20-Tetrakis(4-hydroxyphenyl)porphyrin
Highly Sensitive Detection of Organophosphorus Pesticides Using 5,10,15,20-Tetrakis(4-hydroxyphenyl)porphyrin
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DOI：
10.2116/analsci.31.1325
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发表时间：
2015-12
影响因子：
1.6
通讯作者：
Takaya Murakami;Yoshiaki Iwamuro;S. Chinaka;N. Takayama;T. Komatsu
中科院分区：
文献类型：
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作者：
Takaya Murakami;Yoshiaki Iwamuro;S. Chinaka;N. Takayama;T. Komatsu
研究了5，10，15，20-四（4-羟基苯基）卟啉（THPP）在有机磷农药存在下的紫外-可见吸收光谱特性。在滴定总共40种不同的OP农药中的每16种时，Soret带显著红移，并且出现非常强的Q带。这是由于THPP的双质子化作用。确定用于该反应的合适溶剂为甲醇。THPP有望成为一种在10^−6 − 10^−4 M浓度范围内具有高灵敏度的有机磷农药检测传感分子。
We describe a unique UV-visible absorption spectral property of 5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrin (THPP) in the presence of organophosphorus (OP) pesticides. Upon titrating each 16 among total 40 different OP pesticides, the Soret band was significantly red-shifted, and a very intense Q band appeared. They were attributed to the diprotonation of THPP. A suitable solvent for this reaction was determined to be methanol. THPP would become a potential sensor molecule used to detect OP pesticides with high sensitivity in the concentration range of 10^−6 − 10^−4 M.