SPECTROSCOPIC AND ELECTROCHEMICAL CHARACTERIZATION OF IRON(II) AND 2,4-DINITROTOLUENE.
SPECTROSCOPIC AND ELECTROCHEMICAL CHARACTERIZATION OF IRON(II) AND 2,4-DINITROTOLUENE.
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DOI：
10.1080/00032719.2015.1030675
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发表时间：
2015
影响因子：
2
通讯作者：
Seo SS
中科院分区：
文献类型：
--
作者：
Brown K;Doo H;Makamba H;Seo SS
这项工作的目的是发展可靠的方法来确定2,4-二硝基甲苯，一种爆炸物的前体。Fe（II）离子与2,4-二硝基甲苯在溶液中形成配合物，并用Job’s图和衰减全反射-傅里叶变换红外光谱对其进行了表征。采用铁纳米颗粒电化学还原铁（II）的方法对玻碳电极进行表面改性。采用该电极对2,4-二硝基甲苯进行了测定。扫描电镜显示，纳米铁颗粒在玻碳电极表面结合。采用循环伏安法对2,4-二硝基甲苯进行了电化学测定。对于相同浓度的2,4-二硝基甲苯，铁修饰电极比未修饰电极产生更大的还原电流。2,4-二硝基甲苯的浓度低至十亿分之十，使用改进的电极测定。
The objective of this work was the development of reliable methods to determine 2,4-dinitrotoluene, a precursor to explosives. A complex between Fe(II) ion and 2,4-dinitrotoluene was formed in solution and characterized by ultraviolet-visible absorption spectroscopy using Job’s plots and attenuated total reflection-Fourier transform infrared spectroscopy. Surface modification of glassy carbon electrodes were performed with iron nanoparticles via electrochemical reduction of iron(II). The modified electrode was employed for the determination of 2,4-dinitrotoluene. Scanning electron micrographs showed that the iron nanoparticles were incorporated on the surface of glassy carbon electrode. The electrochemical determination of 2,4-dinitrotoluene was performed by cyclic voltammetry using the modified electrode. The iron modified electrode produced larger reduction currents than the unmodified electrode for the same concentration of 2,4-dinitrotoluene. Concentrations of 2,4-dinitrotoluene as low as 10 parts per billion were determined using the modified electrode.